Checkpoint Systems EVOLVES10 ELECTRONIC ARTICLE SURVEILANCE DETECTION SYSTEM User Manual USERS MANUAL
Checkpoint Systems Inc ELECTRONIC ARTICLE SURVEILANCE DETECTION SYSTEM USERS MANUAL
USERS MANUAL
Universal Socket Connectivity
Embedded Device Networking Solutions
SocketModem – MT5600SMI
SocketModem – MT5656SMI
SocketModem – MT5634SMI
SocketModem – MT2456SMI-22
SocketModem IP – MT2456SMI-IP
SocketEthernet IP – MTXCSEM
SocketModem ISDN – MT128SMI
SocketModem GPRS – MTSMC-G
SocketModem CDMA – MTSMC-C
SocketWireless Bluetooth® – MTS2BTSMI
SocketWireless EDGE – MTSMC-E
Hardware Guide for Developers
Copyright and Technical Support
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 2
Universal Socket Connectivity Developer's Guide
PN S000342D, Version D
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-
Tech Systems, Inc. All rights reserved.
Copyright © 2004-5 by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically
disclaim any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech
Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.
Revisions
Revision Level Date Description
A 06/17/04 Initial release of Universal Socket Connectivity hardware guide.
B 10/01/04 Added SocketWireless with Bluetooth Technology chapter. Changed pinouts:
TXCLK to TCLK and RXCLK to RCLK. Added the schematics for the MT128SMI.
Added note to the SocketEthernet IP filtering drawing.
C 11/11/04 Revised GSM/GPRS mechanical drawing. More information location information
about AT commands, fax commands, and voice commands. Update Bluetooth
chapter.
D 10/28/05 Added SocketWireless EDGE chapter. Added Recycling Statement (WEEE)
Trademarks
Registered Trademarks of Multi-Tech Systems, Inc. are SocketModem, SocketWireless, and the Multi-Tech logo.
Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation in the United States
and/or other countries. Bluetooth is a registered trademark of Bluetooth.
Patents
This device covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,905,794; 5,864,560;
5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627; 5,754,589; 5,724,356; 5,673,268;
5,673,257; 5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; 5,559,793;
5,546,448; 5,546,395; 5,535,204; 5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; 5,355,365;
5,309,562; 5,301,274. Other Patents Pending.
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: 763-785-3500 or 800-328-9717
Fax: 763-785-9874
Technical Support
Country By Email By Phone
France: support@multitech.fr (33) 1-64 61 09 81
India: support@multitechindia.com 91 (124) 6340778
U.K.: support@multitech.co.uk (44) 118 959 7774
U.S. and Canada: oemsales@multitech.com (800) 972-2439
Rest of the World: oemsales@multitech.com (763) 717-5863
Internet Address: http://www.multitech.com
Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 3
Table of Contents
Chapter 1 - Universal Socket Connectivity ................................................................................................................8
Multi-Tech Embedded Solutions .............................................................................................................................8
Universal Socket Connectivity Features .................................................................................................................8
The Universal Socket Design..................................................................................................................................8
AT, Fax, and Voice Commands ..............................................................................................................................9
Universal Socket Configuration.............................................................................................................................10
Universal Pin Descriptions .............................................................................................................................10
Design Considerations..........................................................................................................................................13
PC Board Layout Guidelines..........................................................................................................................13
Electromagnetic Interference (EMI) Considerations ......................................................................................14
Handling Precautions.....................................................................................................................................14
Mechanical Dimensions in Inches.........................................................................................................................15
Mechanical Dimensions in Millimeters ..................................................................................................................16
Maximum Component Height................................................................................................................................16
SocketModem Developer Board ...........................................................................................................................17
Board Components ...............................................................................................................................................18
SocketModem Developer Board Block Diagram............................................................................................19
Developer Board Schematics................................................................................................................................20
Developer Board Schematics................................................................................................................................21
Developer Board Schematics................................................................................................................................22
Developer Board Schematics................................................................................................................................23
Telecom Approvals for Analog Dial-up..................................................................................................................24
Labeling Requirements .........................................................................................................................................25
United States Labeling Requirements (for Dial-Up Modems) ........................................................................25
Canadian Labeling Requirements (for Dial-Up Modems) ..............................................................................26
Label Examples (for Dial-Up SocketModems) ...............................................................................................27
Regulatory Compliance Statements......................................................................................................................28
EMC, Safety, and R&TTE Directive Compliance ...........................................................................................28
International Modem Restrictions ..................................................................................................................28
EMC Requirements for the United States......................................................................................................28
EMC Requirements for Industry Canada .......................................................................................................28
New Zealand Telecom Warning Notice..........................................................................................................29
South African Statement ................................................................................................................................29
Other..............................................................................................................................................................29
Restriction of the Use of Harzardous Substances (RoHS)....................................................................................30
Waste Electrical and Electronic Equipment Statement .........................................................................................31
Flash Upgrade ......................................................................................................................................................32
Multi-Tech Systems, Inc. Flash Programming Protocol .................................................................................35
Wireless Account Activation..................................................................................................................................38
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI) .........................................................................................42
Introduction ...........................................................................................................................................................42
Product Ordering Information................................................................................................................................42
Developer Kit ........................................................................................................................................................43
Technical Specifications .......................................................................................................................................44
SocketModem Configuration.................................................................................................................................46
MT5600SMI Serial Configuration...................................................................................................................46
MT5656SMI Serial with Voice Configuration..................................................................................................46
Parallel Configuration.....................................................................................................................................47
Differences - Legacy Voice Modems and Current Modems ..................................................................................48
Differences between the SFxxxD/SP and the MT5656SMI............................................................................48
Electrical Characteristics.......................................................................................................................................49
3.3 V Serial SocketModem ............................................................................................................................49
3.3 V Parallel SocketModem..........................................................................................................................49
5 V Serial SocketModem ...............................................................................................................................49
5 V Parallel SocketModem.............................................................................................................................49
Parallel Host Bus Timing Table.............................................................................................................................50
Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 4
SocketModem Parallel Interface ...........................................................................................................................51
Overview........................................................................................................................................................51
Transmitter FIFO Interrupt Operation.............................................................................................................51
Register Functional Definitions ......................................................................................................................52
IER – Interrupt Enable Register .....................................................................................................................53
FCR – FIFO Control Register ........................................................................................................................54
IIR – Interrupt Identifier Register....................................................................................................................55
LCR – Line Control Register ..........................................................................................................................56
MCR – Modem Control Register....................................................................................................................57
LSR – Line Status Register............................................................................................................................58
MSR – Modem Status Register .....................................................................................................................59
RBX – RX Buffer (Receiver Buffer Register)..................................................................................................59
THR – TX Buffer (Transmitter Holding Register) ...........................................................................................59
SCR – Scratch Register.................................................................................................................................60
Divisor Registers............................................................................................................................................60
Application Notes ..................................................................................................................................................61
Tip and Ring Interface....................................................................................................................................61
Microphone and Speaker...............................................................................................................................62
Recommended Parts .....................................................................................................................................63
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92) ...............................................................................65
Introduction ...........................................................................................................................................................65
Product Ordering Information................................................................................................................................65
Developer Kit ........................................................................................................................................................65
Technical Specifications .......................................................................................................................................66
SocketModem Configuration.................................................................................................................................68
Serial Configuration .......................................................................................................................................68
Parallel Configuration.....................................................................................................................................69
Electrical Characteristics.......................................................................................................................................70
3.3 V Serial – Industrial Temperature (SMI-ITP) Build Option .......................................................................70
3.3 V Parallel – Standard (SMI) and Industrial Temperature (SMI-ITP) Build Options...................................70
5 V Serial – Standard (SMI) and Medical Device (SMI-HV) Build Options.....................................................70
5 V Parallel – Standard (SMI) and Medical Device (SMI-HV) Build Options ..................................................70
Timing Requirements............................................................................................................................................71
SocketModem Parallel Interface Internal Registers ..............................................................................................72
Overview........................................................................................................................................................72
Register Functional Definitions ......................................................................................................................74
RBR – Receive Buffer (RX FIFO) ..................................................................................................................75
THR – Transmit Holding Register (TX FIFO) .................................................................................................75
IER – Interrupt Enable ...................................................................................................................................75
IIR – Interrupt Identification (Read Only)........................................................................................................75
FCR – FIFO Control.......................................................................................................................................76
LCR – Line Control ........................................................................................................................................76
MCR – Modem Control ..................................................................................................................................76
LSR – Line Status..........................................................................................................................................77
MSR – Modem Status....................................................................................................................................77
SCR – Scratch ...............................................................................................................................................78
DLL – Divisor Latch (LSByte).........................................................................................................................78
DLM – Divisor Latch (MSByte).......................................................................................................................78
Application Notes ..................................................................................................................................................79
Tip and Ring Interface....................................................................................................................................79
Recommended Parts .....................................................................................................................................80
Chapter 4 – SocketModem (MT2456SMI-22) ............................................................................................................82
Introduction ...........................................................................................................................................................82
Product Ordering Information................................................................................................................................82
Developer Kit ........................................................................................................................................................82
Technical Specifications .......................................................................................................................................83
SocketModem Configuration.................................................................................................................................85
Serial Configuration .......................................................................................................................................85
Electrical Characteristics.......................................................................................................................................86
3.3 V and 5 V Serial SocketModem ...............................................................................................................86
Applications Notes ................................................................................................................................................87
Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 5
Tip and Ring Interface....................................................................................................................................87
Recommended Parts .....................................................................................................................................88
Chapter 5 – SocketModem IP (MT2456SMI-IP).........................................................................................................90
Introduction ...........................................................................................................................................................90
Product Ordering Information................................................................................................................................90
Developer Kit ........................................................................................................................................................90
Technical Specifications .......................................................................................................................................91
SocketModem Configuration.................................................................................................................................93
Serial Configuration .......................................................................................................................................93
Electrical Characteristics.......................................................................................................................................94
3.3 V Serial ....................................................................................................................................................94
Application Notes ..................................................................................................................................................95
Tip and Ring Interface....................................................................................................................................95
Recommended Parts .....................................................................................................................................96
Chapter 6 – SocketEthernet IP (MTXCSEM).............................................................................................................98
Introduction ...........................................................................................................................................................98
Product Ordering Information................................................................................................................................98
Developer Kit ........................................................................................................................................................98
Technical Specifications .......................................................................................................................................99
SocketModem Configuration...............................................................................................................................101
Serial Configuration .....................................................................................................................................101
Electrical Characteristics.....................................................................................................................................102
3.3 V Serial ..................................................................................................................................................102
5 V Serial .....................................................................................................................................................102
Application Notes ................................................................................................................................................103
Ethernet Interface – Non-Isolated Design .................................................................................................... 103
Ethernet Interface – Isolated Design............................................................................................................103
Recommended Parts ...................................................................................................................................103
Chapter 7 – SocketModem ISDN (MT128SMI) ........................................................................................................105
Introduction .........................................................................................................................................................105
Product Ordering Information..............................................................................................................................105
Developer Kit ......................................................................................................................................................105
Technical Specifications .....................................................................................................................................106
SocketModem ISDN Configuration .....................................................................................................................107
Serial Configuration .....................................................................................................................................107
Electrical Characteristics.....................................................................................................................................108
3.3 V and 5 V Serial SocketModem ISDN....................................................................................................108
Application Notes ................................................................................................................................................108
Safety Warning Telecom / ISDN-ST ............................................................................................................ 108
Interface Connector Contact Assignments...................................................................................................108
ISDN Interface .............................................................................................................................................108
Chapter 8 – SocketModem GPRS (MTSMC-G).......................................................................................................110
Product Description.............................................................................................................................................110
Product Ordering Information..............................................................................................................................110
Developer Kit ......................................................................................................................................................110
Technical Specifications .....................................................................................................................................111
Mechanical Dimensions ......................................................................................................................................112
SocketModem Configuration...............................................................................................................................113
Serial Configuration .....................................................................................................................................113
Electrical Characteristics.....................................................................................................................................114
Power Consumption.....................................................................................................................................114
SIM Interface Electrical Characteristics .......................................................................................................115
Application Notes ................................................................................................................................................116
Flashing LED Interface ................................................................................................................................116
SIM Interface ...............................................................................................................................................116
RF Interface .................................................................................................................................................116
Sources for Peripheral Devices ...................................................................................................................117
Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 6
Chapter 9 – SocketModem CDMA (MTSMC-C) ......................................................................................................119
Product Ordering Information..............................................................................................................................119
Developer Kit ......................................................................................................................................................119
Technical Specifications .....................................................................................................................................120
Mechanical Dimensions ......................................................................................................................................121
SocketModem Configuration...............................................................................................................................122
Serial Configuration .....................................................................................................................................122
Electrical Characteristics.....................................................................................................................................122
Electrical Characteristics for the 5V Serial SocketModem ...........................................................................122
Power Consumption.....................................................................................................................................122
Application Notes ................................................................................................................................................123
Flashing LED Interface ................................................................................................................................123
RF Interface .................................................................................................................................................123
Sources for Peripheral Devices ...................................................................................................................124
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI) ........................................................................................ 126
Introduction .........................................................................................................................................................126
Notes about Byte Gaps and Data Latency...................................................................................................126
Product Ordering Information..............................................................................................................................126
Developer Kit ......................................................................................................................................................126
Technical Specifications .....................................................................................................................................127
Mechanical Dimensions ......................................................................................................................................129
SocketWireless Bluetooth Configuration .............................................................................................................130
Serial Configuration .....................................................................................................................................130
Electrical Characteristics.....................................................................................................................................130
3.3 V and 5 V Serial SocketWireless ...........................................................................................................130
Application Notes ................................................................................................................................................131
Example of a Master Discovery/Connection Sequence ...............................................................................131
Example of a Slave Command Sequence ...................................................................................................132
Changing Configuration ......................................................................................................................................132
Sources for Peripheral Devices...........................................................................................................................133
Chapter 11 – SocketModem EDGE .........................................................................................................................134
Product Description.............................................................................................................................................134
AT Commands ....................................................................................................................................................134
Developer Kit ......................................................................................................................................................134
Technical Specifications .....................................................................................................................................135
Physical Dimensions...........................................................................................................................................136
Pin Configurations...............................................................................................................................................137
EDGE Pin Descriptions................................................................................................................................137
Pin 58 – LED Mode......................................................................................................................................138
Electrical Characteristics & Power Consumption ................................................................................................139
I/O Electrical Characteristics........................................................................................................................139
Voice Mode Power Consumption.................................................................................................................139
Data Mode Power Consumption ..................................................................................................................139
SIM Interface Electrical Characteristics .......................................................................................................140
Other Characteristics ..........................................................................................................................................140
Radio Characteristics...................................................................................................................................140
Receiver Features .......................................................................................................................................140
Transmitter Features....................................................................................................................................140
Speaker Output............................................................................................................................................140
Microphone Input .........................................................................................................................................140
Peripheral Devices..............................................................................................................................................141
Antenna .......................................................................................................................................................141
SIM Connector.............................................................................................................................................141
Index..........................................................................................................................................................................142
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 7
Chapter 1
Universal Socket Connectivity
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 8
Chapter 1 - Universal Socket
Connectivity
Multi-Tech Embedded Solutions
Multi-Tech’s family of embedded solutions creates communication-ready devices by integrating dialup, wireless, or
Ethernet connectivity into a single, universal socket design. Now you have the ability to provide remote monitoring,
diagnostics, data collection, or virtually any communication ability to your existing or new device via interchangeable
dial-up, wireless, or Ethernet communication modules.
Universal Socket Connectivity Features
• Flexible comm-port architecture
• Interchangeable socket modules
• Cost-effective system design
• Easy migration to future technologies
• Complete global compliance
The SocketModem's flexible comm-port architecture provides dial-up, wireless, or Ethernet socket connectivity with
interchangeable modules. This means you can utilize one system design and populate it with your communication
module of choice. In addition, you are assured a seamless migration to future technologies.
The Universal Socket Design
Each pin on a SocketModem corresponds to a particular function. The universal socket design provides a universal
location for each function pin. This allows each SocketModem to be used in a common developer's test board.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 9
AT, Fax, and Voice Commands
AT Commands
Multi-Tech provides Reference Guides for each SocketModem's AT commands, fax commands, and voice
commands. These reference guides are available on the CD included in the Developer Kit. They are also available by
email at oemsales@multitech.com or by request using the Developer Guide Request Form on Multi-Tech's Web site.
Fax Commands
Fax Commands are included in the AT Command Reference Guide when applicable to the product. They are
available on the CD included in the Developer Kit.
Note: Fax Commands supported by product:
• SocketModem MT5600SMI supports Class 1 & 1.0
• SocketModem MT5656SMI supports Class 1 & 2 (not 2.0/2.1)
• SocketModem MT5634SMI supports all Class 1 and Class 2 commands (Class 1, 1.0, 2, 2.0/2.1)
• Wireless GSM/GPRS MTSMC-G supports Class 1 core commands only (defined by ITU T.31)
• Wireless CDMA MTSMC-C supports Class 2.0
Voice Commands
Voice Commands Reference Guides are available on the CD included in the Developer Kit.
• SocketModem MT5600SMI supports +V commands
• SocketModem MT5656SMI supports +V (including speakerphone)
• SocketModem MT5634SMI supports +V commands
Table of Available Command Documents
Product AT Commands Fax Commands Voice Commands
SocketModem
(MT5600SMI)
(MT5656SMI)
MT5600/5656SMI AT Commands
Reference Guide (S000306x)
Class 1 & 2 included in
S000306x
Included in S000306x
SocketModem
(MT5634SMI-xx)
MT5634SMI AT Commands
Reference Guide (S000263x)
Class 1 & 2 included in
S000263x
Included in S000263x
SocketModem
(MT2456SMI-22 & 22L)
MT2456SMI-22 AT Commands
Reference Guide (S000281x)
Fax Not Supported Voice Not Supported
SocketModem IP
(MT2456SMI-IP)
MT2456SMI-IP Command Line
Interface Guide and Application
Examples (S000368x)
Fax Not Supported Voice Not Supported
SocketEthernet IP
(MTXCSEM)
MTXCSEM Command Line
Interface Guide and Application
Examples (S000278x)
Fax Not Supported Voice Not Supported
SocketModem ISDN
(MT128SMI)
MT128SMI AT Commands
Reference Guide and Application
Examples (S000352x)
Fax Not Supported Voice Not Supported
SocketModem GPRS
(MTSMC-G)
GSM/GPRS AT Commands
Reference Guide and Application
Examples (S000293x)
Applicable Fax
Commands included
S000293x
Voice Not Supported
SocketModem GPRS IP
(MTSMC-G)
GSM/GPRS IP AT Commands
Reference Guide and Application
Examples (S000333x)
Fax Not Supported Voice Not Supported
SocketModem CDMA
(MTSMC-C)
CDMA AT Commands
Reference Guide and Application
Examples (S000294x)
Applicable Fax
Commands included in
S000294x
Voice Not Supported
SocketWireless
Bluetooth
(MTS2BTSMI)
SocketWireless Bluetooth AT
Commands Reference
Guide (S000360x)
Fax Not Supported Voice Not Supported
SocketModem EDGE
(MTSC-E)
SocketModem EDGE AT
Commands Reference Guide and
Application Examples (S000371x)
Applicable Fax
Commands included in
S000371x
Applicable Voice
Commands included in
S000371x
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 10
Universal Socket Configuration
Note: Pin 6 is RX- for the SocketEthernet IP. For ISDN, Pin 6 is RX+.
Pin 7 is RX+ for the SocketEthernet IP. For ISDN, Pin 7 is RX-.
Universal Pin Descriptions
Pin Signal
Name
In
Out
Type
Description
1 Tip I/O
Tip Signal from Telco. Tip connection to the phone line (RJ-11 Pin 4). The
SocketModem is Tip/Ring polarity insensitive.
2 Ring I/O
Ring Signal from Telco. Ring connection to the phone line (RJ-11 Pin 3). The
SocketModem is Tip/Ring polarity insensitive.
3 Safety Void NA
Safety Clearance. 2.5 mm is required between TNV circuits and SELV circuits.
4 TX+ O
Transmit Outputs (TX+ and TX-). Differential transmit outputs for Ethernet and
ISDN.
5 TX- O
Transmit Outputs (TX+ and TX-). Differential transmit outputs for Ethernet and
ISDN.
6 RX+ or
RX- (ISDN)
I Receive Inputs (RX+ and RX-). Differential receive input pins for Ethernet and
ISDN.
7 RX- or
RX+ (ISDN)
I Receive Inputs (RX+ and RX-). Differential receive input pins for Ethernet and
ISDN.
8 Safety Void NA
Safety Clearance. 2.5 mm is required between TNV circuits and SELV circuits.
11 TCLK O
Transmit Data Sync Clock. TX synchronous data clock for ISDN sync data mode.
12 RCLK O
Receive Data Sync Clock. RX synchronous data clock for ISDN sync data mode.
22 MIC+ I Wireless GSM/GPRS, CDMA, EDGE.
23 MIC- O
Wireless GSM/GPRS, CDMA, EDGE.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 11
Pin Signal
Name
In/Out Description
24 –RESET I
Device Reset (with pull-up).
The active low –RESET input resets the device logic and returns the configuration of
the device to the original factory default values or "stored values" in the NVRAM.
–RESET is tied to VCC through a time-constant circuit for “Power-on-Reset”
functionality. The module is ready to accept commands after a fixed amount of time
(“X” Time) after power-on or reset.
Model Time Constant "X" Time Minimum Reset Pulse*
MT5600SMI 250 ms 6 seconds 100us
MT5656SMI 250 ms 6 seconds 100us
MT5634SMI 400 ms 6 seconds 100us
MT2456SMI-22 250 ms 6 seconds 100us
MT2456SMI-IP 250 ms 6 seconds 100us
MTXCSEM 250 ms 6 seconds 100us
MT128SMI 200 ms 6 seconds 100us
MTS2BTSMI 250 ms 6 seconds 100us
MTSMC-E 250 ms 6 seconds 100us
*The SocketModem device may respond to a shorter reset pulse.
Reset Line Interface for the MT5656SMI, MT2456SMI, MT2456SMI-IP
The modem’s reset line employs a .01uF cap and a 10K pull up resistor. Care must
be taken to ensure the system the modem is place into is not affected by the added
capacitance of the reset line. It is not advisable to use an open collector driver in the
embedded system's reset circuitry to drive a reset signal to the embedded modem
and other I.C.s in the customer’s design. Rather, if an open collector driver is to be
used, run that output to the modem only and use a separate driver for other
embedded components. The modem’s reset signal may also be driven by a circuit
that both sinks and sources current if desired.
It is also important to note that these modems do not require an external
reset. They have their own internal reset circuitry and voltage monitor and will
function correctly even if the reset input is open.
Reset Wireless GSM/GPRS and CDMA
This signal is used to force a reset procedure by providing low level during reset of
at least 500us. The signal is considered an emergency reset only. A reset procedure
is already driven by internal hardware during the power-up sequence. If no external
reset is necessary, this input can be left open. If used (emergency reset), it has to
be driven by an open collector or an open drain.
26 GND GND
Logic Ground.
29 LED DCD O DCD (Active High). Output from 74LCX14 with a 1000 Ohms resistor in series.
SocketWireless Bluetooth (MTS2BTSMI): When lit, indicates a connection. No
series resistor.
30 LED RX O RX (Active High). Output from 74LCX14 with a 1000 Ohms resistor in series.
SocketWireless Bluetooth (MTS2BTSMI): No series resistor.
31 LED DTR O DTR (Active High). Output from 74LCX14 with a 1000 Ohms resistor in series.
SocketWireless Bluetooth (MTS2BTSMI): No series resistor.
32 LED TX O TX (Active High). Output from 74LCX14 with a 1000 Ohms resistor in series.
SocketWireless Bluetooth (MTS2BTSMI): No series resistor.
33 –RTS I
Request to Sent (Active Low). –RTS signal is used for hardware flow control. –RTS
input ON (low) indicates that the DTE is ready to send data to the modem. In the
command state, the modem ignores –RTS.
Note: When the –RTS pin is not in use, it should be tied low.
34 –RXD O
Received Data. The module uses the RXD line to send data to the DTE and to send
module responses to the DTE. In command mode, –RXD data presents the module
responses to the DTE. Module responses take priority over incoming data when the
two signals are in competition for –RXD. When no data is transmitted, the signal is
held in mark condition.
35 –TXD I
Transmitted Data. The DTE uses the –TXD line to send data to the module for
transmission or to transmit commands to the module. The DTE holds this circuit in
mark state when no data is being transmitted or during intervals between characters.
36 –RI or
PIO5
O RING (Active Low). Incoming ring signal from phone.
Ring Indicate. –RI output ON (low) indicates the presence of an ON segment of a
ring signal on the telephone line. The modem will not go off-hook when –RI is active;
the modem waits for –RI to go inactive before going off-hook.
SocketWireless Bluetooth (MTS2BTSMI): PIO5 – User definable I/O pin PIO5.
Strobes 1/sec for slave indication.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 12
Pin Signal
Name
In/Out Description
37 –DSR or
PIO7
O Data Set Ready (Active Low). –DSR indicates module status to the DTE. –DSR
OFF (high) indicates that the DTE is to disregard all signals appearing on the
interchange circuits except Ring Indicator (–RI). It reflects the status of the local data
set and does not indicate an actual link with any remote data equipment.
SocketWireless Bluetooth (MTS2BTSMI): PIO7 – User definable I/O pin PIO7.
Defaults as input.
38 –CTS O
Clear to Send (Active Low). –CTS is controlled by the module to indicate whether or
not the module is ready to transmit data. –CTS ON indicates to the DTE that signals
on TXD will be transmitted. –CTS OFF indicates to the DTE that it should not transfer
data on TXD.
39 –DCD O
Data Carrier Detect (Active Low). –DCD output is ON (low) when a data
connection is established and the module is ready to send/receive data.
40 –DTR or
PIO6
I Data Terminal Ready (Active Low). The –DTR input is turned ON (low) when the
DTE is ready to communicate. –DTR ON prepares the modem to be connected, and,
once connected, maintains the connection. –DTR OFF places the modem in the
disconnect state under control of the &Dn and &Qn commands.
Note: When the –DTR pin is not in use, it should be tied low.
SocketWireless Bluetooth (MTS2BTSMI): PIO6 – User definable I/O pin PIO6.
Default: Input.
41 GND GND
Logic Ground.
42 SPK- O
Wireless GSM/GPRS, CDMA, and EDGE. Negative analog speaker output.
43 SPK+ O
Wireless GSM/GPRS, CDMA, and EDGE. Positive analog speaker output.
56 –LED FDX O LED Full Duplex (Active Low). LED Output. During normal operation, this pin lights
the FDX LED to indicate a full duplex mode.
57 –LED ACT O LED Active (Active Low). LED Output. During normal operation, this pin lights the
Activity LED when transmitting or receiving. It flashes at a rate of 50ms high and
50ms low when active.
58 –LEDLINK O LED LINK (Active Low). LED Output. During normal operation, this pin lights the
LINK LED to indicate a good link is detected.
Pin 58 LED Mode Operating Status
Off SCME is off or run in SLEEP and Alarm modes.
600 ms ON / 600ms OFF No SIM card inserted or no PIN entered, or network search in progress, or ongoing
user authentication, or network login in progress.
75 ms ON / 75 ms OFF / 75 ms ON
3 s OFF
Flashing
One or more GPRS contexts activated.
Indicates GPRS data transfer: When a GPRS transfer is in progress, the LED goes
on within 1 second after data packets were exchanged. Flash duration is
approximately 0.5 s.
ON Depending on type of call:
Voice Call: Connected to remote party.
Data Call: Connected to remote party or exchange of parameters while setting up
or disconnecting a call.
59 –LEDCOL O LED Collision (Active Low). LED Output. During normal operation, this pin lights the
COL LED to indicate a collision. It flashes at 50ms high and 50ms low when active.
60 –LEDSPD O LED Speed (Active Low). LED Output. During normal operation, this pin lights the
SPEED LED to indicate 100Mbps is selected.
61 VCC PWR
DC Input Power. 3.3 V or 5 V DC power, depending upon the build.
62 MICV I/O
Single-Ended Microphone. Single-ended microphone input for dial-up
SocketModem speakerphone and TAM functions.
63 AGND GND
Analog Ground. Analog ground is tied common with DGND on the SocketModem.
To minimize potential ground noise issues, connect audio circuit return to AGND.
64 SPKR O Speaker. Dual purpose output for call progress signals or speakerphone functions.
Call Progress signaling on MT5600SMI, MT5656SMI, and MT2456SMI-22 is a
square wave output that can be optionally connected to a low-cost single-ended
speaker; e.g., a sounducer or an analog speaker circuit.
Call progress on the MT5634SMI is an analog output.
Speakerphone Output on the MT5656SMI is under the control of +FCLASS. This is
a single-ended analog output. SPKR is tied directly to the CODEC. One side of a
differential AC output coupled through a 6.8K ohm resistor and capacitor.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 13
Design Considerations
Good engineering practices must be adhered to when designing a printed circuit board (PCB) containing the
SocketModem module. Suppression of noise is essential to the proper operation and performance of the modem
itself and for surrounding equipment.
Two aspects of noise in an OEM board design containing the SocketModem must be considered: on-board/off-board
generated noise that can affect digital signal processing. Both on-board and off-board generated noise that is coupled
on-board can affect interface signal levels and quality. Of particular concern is noise in frequency ranges affecting
modem performance.
On-board generated electromagnetic interference (EMI) noise that can be radiated or conducted off-board is a
separate, but equally important, concern. This type of noise can affect the operation of surrounding equipment. Most
local government agencies have stringent certification requirements that must be met for use in specific
environments.
Proper PC board layout (component placement, signal routing, trace thickness and geometry, etc.) component
selection (composition, value, and tolerance), interface connections, and shielding are required for the board design
to achieve desired modem performance and to attain EMI certification.
The aspects of proper engineering practices are beyond the scope of this designer guide. The designer should
consult noise suppression techniques described in technical publications and journals, electronics and electrical
engineering text books, and component supplier application notes.
PC Board Layout Guidelines
In a 4-layer design, provide adequate ground plane covering the entire board. In 4-layer designs, power and
ground are typically on the inner layers. All power and ground traces should be 0.05 inches wide.
The recommended hole size for the SocketModem pins is 0.036 in. +/-0.003 in. in diameter. Spacers can be
used to hold the SocketModem vertically in place during the wave solder process. A spacer should be placed on
pin 32 and pin 64 of the SocketModem. A suggested part number for the spacer is BIVAR 938-0.130 for P1
(0.310in) option SocketModems. The spacers can be left on permanently and will not effect operation.
All creepages and clearances for the SocketModem have been designed to meet requirements of safety
standards EN60950. The requirements are based on a working voltage of 250V. When the recommended DAA
circuit interface is implemented in a third party design all creepage and clearance requirements must be strictly
adhered to. The third party safety design must be evaluated by the appropriate national agency per the required
specification.
User accessible areas: Based on where the third party design is to be marketed, sold, or used, it may be
necessary to provide an insulating cover over all TNV exposed areas. Consult with the recognized safety agency
to determine the requirements.
Note: Even if the recommended design considerations are followed, there are no guarantees that a particular
system will comply with all the necessary regulatory requirements. It is imperative that specific designs be
completely evaluated by a qualified/recognized agency.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 14
Electromagnetic Interference (EMI) Considerations
The following guidelines are offered to specifically help minimize EMI generation. Some of these guidelines are
the same as, or similar to, the general guidelines but are mentioned again to reinforce their importance. In order
to minimize the contribution of the SocketModem-based design to EMI, the designer must understand the major
sources of EMI and how to reduce them to acceptable levels.
1. Keep traces carrying high frequency signals as short as possible.
2. Provide a good ground plane or grid. In some cases, a multilayer board may be required with full layers for
ground and power distribution.
3. Decouple power from ground with decoupling capacitors as close to the SocketModem module power pins
as possible.
4. Eliminate ground loops, which are unexpected current return paths to the power source and ground.
5. Decouple the telephone line cables at the telephone line jacks. Typically, use a combination of series
inductors, common mode chokes, and shunt capacitors. Methods to decouple telephone lines are similar to
decoupling power lines; however, telephone line decoupling may be more difficult and deserves additional
attention. A commonly used design aid is to place footprints for these components and populate as
necessary during performance/EMI testing and certification.
6. Decouple the power cord at the power cord interface with decoupling capacitors. Methods to decouple
power lines are similar to decoupling telephone lines.
7. Locate high frequency circuits in a separate area to minimize capacitive coupling to other circuits.
8. Locate cables and connectors so as to avoid coupling from high frequency circuits.
9. Lay out the highest frequency signal traces next to the ground grid.
10. If a multilayer board design is used, make no cuts in the ground or power planes and be sure the ground
plane covers all traces.
11. Minimize the number of through-hole connections on traces carrying high frequency signals.
12. Avoid right angle turns on high frequency traces. Forty-five degree corners are good; however, radius turns
are better.
13. On 2-layer boards with no ground grid, provide a shadow ground trace on the opposite side of the board to
traces carrying high frequency signals. This will be effective as a high frequency ground return if it is three
times the width of the signal traces.
14. Distribute high frequency signals continuously on a single trace rather than several traces radiating from one
point.
Handling Precautions
All electronic devices should be handled with certain precautions to avoid damage due to the accumulation of
static charge. Although input protection circuitry has been incorporated into the devices to minimize the effect of
this static buildup, proper precautions should be taken to avoid exposure to electrostatic discharge during
handling and mounting.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 15
Mechanical Dimensions in Inches
Note: This tooling hole is not on all models.
1
2
3
4
5
67 89
10
11
12
13
14
15
16 17 18 19
20
21
22
23
24
25
26 27 28 29
30
31
32
64
63
62
61
60
59 58 57 56
55
54
53
52
51
50
49 48 47 46
45
44
43
42
41
40
39 38 37 36
35
34
33
Dimensions Are Shown in Inches
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 16
Mechanical Dimensions in Millimeters
Dimensions Are Shown in Millimeters
Maximum Component Height
Product Measurement from top of
board to highest topside
component
Measurement from bottom of
board to lowest bottom-side
component
SocketModem – MT5600SM .110 inches (2.80 mm) .110 inches (2.80 mm)
SocketModem – MT5656SMI .212 inches (5.38 mm) .110 inches (2.80 mm)
SocketModem – MT5634SMI .290 inches (7.36 mm) .114 inches (2.90 mm)
SocketModem – MT2456SMI-22 .212 inches (5.38 mm) .110 inches (2.80 mm)
SocketModem IP – MT2456SMI-IP .228 inches (5.79 mm) .114 inches (2.90 mm)
SocketEthernet IP – MTXCSEM .315 inches (8.00 mm) .075 inches (1.90 mm)
SocketModem GPRS – MTSMC-G .153 inches (3.88 mm) .162 inches (4.11 mm)
SocketModem CDMA – MTSMC-C .238 inches (6.04 mm) .162 inches (4.11 mm)
SocketWireless Bluetooth – MTS2BTSMI .270 inches (6.86 mm) 0
SocketModem EDGE – MTSC-E .253 inches (6.42 mm) .118 inches (2.99 mm)
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 17
SocketModem Developer Board
This developer board drawing shows the major board components for all SocketModems.
See the next page for description of Board Components
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 18
Board Components
Jumper Description
JP1 Mutes the speaker. Default positions are 1 and 2 (speaker is not muted).
JP2 & 4 Testing interface (debugging) for the RS-232 signals.
JP3 Changes the speed of the driver. For Multi-Tech use only. Default positions are 1 and 2
(transceiver operates normally).
JP6 & JP9 JP6 & JP9 are the 5V / 3.3V regulators. The operating voltage factory default setting is 3.3V.
JP1 jumper must be set to 3.3V.
Warning – Be sure to that 5V / 3.3V jumper is set to match the requirements of your
SocketModem. If this jumper is set incorrectly, damage to the SocketModem and/or the
Test/Demo card could result.
Caution – Use only the provided Multi-Tech Systems, Inc. transformer with the Test/Demo
board. Use of any other power source will void the warranty and will likely damage the
Test/Demo board and the SocketModem. The transformer connector is keyed to prevent
improper connection to the Test/Demo board.
JP7 & JP13 Testing interface (debugging) for the serial TTL signals.
JP8 Enables/disables the Watchdog interface.
JP10 & JP11 100 OHM terminator for ISDN. Default positions are 1 and 2 (off).
JP12 Ties the TX and RX clock lines together. Default positions are 1 and 2 (transmit and receiver
clock act independently.
JP19 Allows a stereo jack feed. Default is ON. If ON, then left and right stereo channels are
combined and form a mono channel.
Switch 3 Sets the alternate ISDN clock. Default position is OFF (the alternate ISDN clock is off).
Switch
Block
Set the switch to the product being used.
Tables of Pins and Corresponding Signals
J4 and J7
10 PWR
8 CTS
6 DSR
4 DTR
2 RXD
9 RI
7 RTS
5 GND
3 TXD
1 DCD
J2 and J13
2 RXC 1 TXC
Table of Switch Blocks
Module Style Board Labels & Block Settings Board Labels & Block Settings
SocketModems (except ISDN)
SocketEthernet IP
“MODEM
ETHERNET”
“MT ISDN /
ETHERNET
MODEM”
Standard ISDN “ALT ISDN
MT ISDN”
“MT ISDN /
ETHERNET
MODEM”
Alternate ISDN “ALT ISDN
MT ISDN”
“ALT ISDN”
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 19
SocketModem Developer Board Block Diagram
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 20
Developer Board Schematics
SHUNT ON:
1&2=TDCLK
2&3=SYNC
VIN
VIN4,5
DSR3
TXD3
DTR3
RXD3
RI3
RTS3
CTS3
DCD3
RXCLK3
MBAUD3
SLP3
TIP3,4
RING3,4
TXCLK3
GND
GND
GND
GND
GND
GND
GND
CGND
CGND
CGND
CGND
CGND
CGND
GND
GND
GND GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC5
GND
GND GND
GND GND
GND
GND
GND
VDD3_3
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
U14
Si4840DY
6
8
2
37
4
1
5
D2
D4
S2
S3 D3
G1
S1
D1
R247 1
CR1 MMBD301LT1
R32 24.3K
U9
LTC1778
8
5
7
6
1
2
4
3
9
10
11
12
13
14
15
16
VFB
ITH
ION
SGND
RUN/SS
PGOOD
FCB
VRNG
EXTVCC
VIN
INTVCC
BG
PGND
SW
TG
BOOST
JP4
HEADER-5x2
12
34
56
78
910
U22 TC1262
13
VIN VOUT
C178
1uF
16 V
R246 0
R85 0
C177 .1uF 16 V
JP12
HEADER-3
1
2
3
P9
SHUNT
R69 22K
P12
SHUNT
C45 470pF L1 15uH
R1 100K R31 15.8K
+
R86 0
CR2 40V/3A
+
J7
ZDX-POWER-CON
1
2
3
R70 49.9K
C176 .01uF
C175
1uF
16 V
S1
SW-SPDT
23
15
4
JP9
HEADER-3
1
2
3
VR1 LD29300
1 3
VIN VOUT
+
C43 10uF
10 V
J1
25-POS/D-SUB
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
26
27
R87 0
C48 100uF 6.3 V
L2
ZJYS-2
1
2 3
4
C46 .1uF
16 V
+
C49 100uF 6.3 V
U15
Si4840DY
6
8
2
3
7
4
1
5
D2
D4
S2
S3 D3
G1
S1
D1
JP2
HEADER-2
1
2
D1
MB4S
1 2
+
R71 2.2M
C44 .22uF 16 V
R16 330
R245 0
JP6
HEADER-3
1
2
3
U26
ICL3237E
21 8
20
18
24
23
22
19
17
27
4
26
2
9
11
5
6
7
10
12
28
25
1
3
13
14
15
16
R10UT R1IN
R2OUT
R3OUT
T1IN
T2IN
T3IN
T4IN
T5IN
V+
V-
VCC
GND
R2IN
R3IN
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
C1+
C1-
C2+
C2-
EN
SHDN
MBAUD
R1OUTB
R84 0
P6
SHUNT
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 21
Developer Board Schematics
Place close to
the Module.
RESET
TXIND
DTRTTL
RTSTTL
RXIND
DCIND
DTRIND
TXDTTL
ACT
SPD
COL
LINK
FDX
RING
TIP
RXDTTL
DSRTTL
CTSTTL
RITTL
DSRTTL
RITTL
CTSTTL
RXDTTL
DTR2TXD2RTS2
RXD2CTS2DSR2DCD2RI2
DTRTTL5
RTSTTL5TXDTTL5
CTSTTL5RXDTTL
5
DSRTTL5
RITTL5
ACT 4
RX+4
TX-4RX-
4
SPKR 4,5TIP2,4
TX+
4
RING2,4
LINK 4
DCDTTL 5
MIC 5
SPK_P 4
SPK_N 4
MIC_N 4
MIC_P 4
RXCLK
2
MBAUD2
SLP2
TXCLK2
GND
GND
GND
GND
GND
GND
GND
VCC5
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
+
C6 10uF
16 V
J3
12-PIN-SOC
1
2
3
4
5
6
7
8
9
10
11
12
S3-1
SW-4PDT
23
1
R44 150
JP7
HEADER-5x2
1 2
3 4
5 6
7 8
R41 200
R39 200
+
U25
ADM6318
1
4
3
5
2RESET
WDIRESET
VCC
GND
S3-2
SW-4PDT
11 10
12
R57 10K
S5
SW-SPST
13
2 4
R45 150
SW3
SW-DPDT
2
1
3
5
4
6
R194 47K
C24 .01uF
R7 0
LED5 RED
U3
ICL3237E
21
820
18
24
23
22
19
17
27
4
26
2
9
11
5
6
7
10
12
28
25
1
3
13
14
15
16
R10UTR1IN R2OUT
R3OUT
T1IN
T2IN
T3IN
T4IN
T5IN
V+
V-
VCC
GND
R2IN
R3IN
T1OUT
T2OUT
T3OUT
T4OUT
T5OUT
C1+
C1-
C2+
C2-
EN
SHDN
MBAUD
R1OUTB
LED3 RED
C5 .01uF
LED1 RED
U12F
74LCX04
12 13
LED9 RED
R236 0
S3-3
SW-4PDT
87
9
J4
12-PIN-SOC
1
2
3
4
5
6
7
8
9
10
11
12 LED6 RED
R46 150
R195 0
U5B
74VHC00
4
5
6
R8 0
J6
10-PIN-SOC
1
2
3
4
5
6
7
8
9
10
JP3
HEADER-3
1
2
3
C9 .01uF
R40 200
U5A
74VHC00
1
2
3
14
7
JP13
HEADER-2
1
2
U8
7S32
1
2
4
5
3
R38 200
J5
14-PIN-SOC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R196 0
R43 150
S3-4
SW-4PDT
56
4
LED8 RED
R9 0
JP8
HEADER-2
1
2
P3
SHUNT
R235 4.7K
LED2 RED
LED7 RED
LED4 RED
R42 200
9 10
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 22
Developer Board Schematics
TX TERM.
SHUNT ON:
1&2=OPEN
2&3=100
OHM
SHUNT ON:
1&2=OPEN
2&3=100
OHM
HANDSET
RX TERM.
I_RX-
I_RX+
E_TX-
E_TX+
E_RX-
E_RX+
I_TX+
I_TX-
RING2,3 TIP2,3
SPKR3,5
ACT
3
LINK
3
VIN2,5
VIN2,5
SPK_N3
SPK_P3
MIC_N3
MIC_P3
TX+3RX-3RX+3
TX-3
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
CGND
CGND
CGND
CGND
CGND
CGND
CGND
VCC
VCC
VCC
GND
GND
GND
GND
R75 47K
C192 .01uF
JP10
HEADER-3
1
2
3
R55 0
S4-3
SW-4PDT
87
9
C26 10uF
16 V
C54 15pF
R241 9.09
U4
LM386
2
35
FB27
C53 220pF
5KV
R73 47K
J2
6X4-MODJACK
5
4
3
2
R22 4.7K
R23
10K
2
R13 75
J21
8X8-MODJACK
5
4
3
2
6
1
7
8
C55 15pF
C194 .01uF
S4-4
SW-4PDT
56
4
R239 0
Q21
2N3904
JP1
HEADER-3
1
2
3
CR3
DALC208SC6
5
3
16
2
4
FB28
BLM18AG102SN1
R56 1K
R74 2.7K
U13B
74LCX04
3 4
R58 4.7K
J22
4X4-MODJACK
1
2
3
4
R14 75
C56 15pF
DS1
SPEAKER
1
2
R237 100
S4-1
SW-4PDT
23
1
FB29
C3 10uF
16 V
C195 .01uF
FB23 600-OHM
P1
SHUNT
C57 15pF
R238 100
C193 .01uF
C27 .1uF
16 V
P11
SHUNT
JP11
HEADER-3
1
2
3
C42 .001uF
2KV
S4-2
SW-4PDT
11 10
12
Q19
2N3904
F1 145mA
FB24 600-OHM
C52 220pF
5KV
R240 9.09
U13A
74LCX04
14
7
1 2
FB26
C12 .01uF
R72 2.7K
+
C28 100uF
16 V
J10
8X8-MODJACK-2LEDS
5
4
3
2
6
1
7
89
10
11
12
13
14
F2 145mA
P10
SHUNT
R6 0
R3 0
R2 0
R10 0
Safety Isolation Barrier
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 23
Developer Board Schematics
DCDTTL 3
DTRTTL
3
RXDTTL 3
DSRTTL
3
CTSTTL
3TXDTTL 3
RTSTTL
3RITTL 3
VIN
2,4
MIC
3
SPKR
3,4
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
R78 47K
U13C
74LCX04
5
6
C187 4.7pF
Q14
2N3904
C191 .01uF
R80 47K
R214 2.7K
FB25
MLB20
R205 10K
C13 .01uF
R77 47K
R207 47K
C186 .001uF
100 V
R82 47K
R209 47K
+
C179 10uF
16V
C180 .01uF
Q18
2N3904
R211 10K
C183 .001uF
C14 .01uF
R210 0
R18 2.7K
C181 1uF
U12C
74LCX04
5 6
R212 47K
U12A
74LCX04
14
7
1 2
C182 .001uF
100 V
R81 47K
+
-
U17A
V+
V-
TL082
1
3
2
Q17
2N3904
U12E
74LCX04
10 11
R213 10K
U23
LM4861
1
2
4
35
8
6
7
SHUTDOWN
BYPASS
IN-
IN+
VO1
VO2
VDD
GND
Q20
2N3904
U12B
74LCX04
3 4
U13D
74LCX04
8 9
R216 0
Q15
2N3904
Q13
2N3904
P19
SHUNT
U12D
74LCX04
89
R76 47K
C1 .01uF
C185 .01uF
U13E
74LCX04
10 11
J19
HEADER-2
R79 47K
LED13 RED
J20
5-PIN-STEREO-JACK
4
3
5
2
1
Q12
2N3904
C184 .47uF
25 V
R208 301K
J18
5-PIN-STEREO-JACK
4
3
5
2
1
Q16
2N3904
16 V
C190
.1uF
R5 2.7K LED12 RED
R17 2.7K LED11 RED
R4 2.7K LED10 RED
R215 0
LED17 RED R59 2.7K
LED16 RED R60 2.7K
LED15 RED R20 2.7K
LED14 RED R19 2.7K
R83 47K
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 24
Telecom Approvals for Analog Dial-up
Multi-Tech's Analog Dial-up Global* SocketModems are designed and approved for connection to the public switched
telephone network in more than 50 countries or regions worldwide. Multi-Tech's SocketModems have been approved
as host independent, which means our certification efforts can be transferred directly to your end product. Multi-Tech
supports our approvals by supplying our customers with supporting documentation and offering a compliance label
with country or region approval logos and approval numbers to be attached to an end product.
The following is a list of countries or regions that Multi-Tech completes testing and obtains** certification test reports
or certificates at or near the initial release of the product. After the initial release, the product may be tested and
certified for other countries or regions. Check the Multi-Tech Systems, Inc. Web site at
http://www.multitech.com/products/info/approvals/smi.asp or contact Multi-Tech at
oemsales@multitech.com to obtain a current list of approvals for the SocketModem.
Countries or Regions
Argentina France Latvia Russia
Australia Germany Liechtenstein Singapore
Austria Greece Lithuania Slovakia Republic
Belgium Hong Kong, S.A.R. of China Luxembourg Slovenia
Brazil Hungary Malaysia South Africa
Canada Iceland Malta Spain
Chile India Mexico Sweden
China Indonesia Netherlands Switzerland
Cyprus Ireland New Zealand Taiwan
Czech Republic Israel Norway Thailand
Denmark Italy Philippines Turkey
Estonia Japan Poland United Kingdom
Finland Korea Portugal United States
The above list is our target set of countries or regions in which the global* SocketModems are approved. Many of the
approvals are completed at the time the product is released to market; whereas, others may take additional months to
complete the approval.
* Refer to each chapter for Product Ordering Information identifying the modem as Global or Regional.
** Some countries or regions have special import requirements that require us to facilitate additional paperwork
application in partner with our customers. Contact Technical Support or Multi-Tech at
oemsales@multitech.com for more information.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 25
Labeling Requirements
Note to OEMs: The following labeling requirements and regulatory compliance statements may be used in
the documentation for your final product applications.
United States Labeling Requirements (for Dial-Up Modems)
Telecom does not apply to all products. For example, this not applicable for the Wireless GSM/GPRS and CDMA
products.
Approved terminal equipment and approved protective circuitry shall prominently display the following information
using the format shown below:
• Responsible party
• Product Identification
• Equipment Code
• Ringer Equivalence
• Ringer Type
• Indication that the product meets the requirements of FCC Part 68
The information required by the first five items shall correspond to the records in the ACTA (America's Carriers
Telecommunications Association) database of approved equipment. The required information shall be encoded in the
following format:
US: AAAEQ##TXXX
Where:
US: Is a fixed field that indicates the equipment meets all requirements of 47 CFR Part 68, including the
requirements published by ACTA (America's Carriers Telecommunications Association).
AAA is the responsible party’s Grantee Code obtained previously from the FCC’s Common Carrier Bureau or
currently from ACTA.
EQ Is an Equipment Code indicating to the Service Provider any special signal handling or billing requirements. The
Equipment codes are listed in Annex A (normative).
## is the Ringer Equivalence Number without a decimal point (e.g. REN of 1.0 = 10, REN of 0.3 = 03). In the case of
a “Z” ringer, ZZ shall appear. In the case of approved equipment without a network interface and equipment not
connecting to circuits with analog ringing supplied then “NA” shall appear.
T is the ringer type letter associated with the Ringer Equivalence Number, in accordance with the technical
requirements. In the case of approved equipment without a network interface and equipment not connecting to
circuits with analog ringing supplied, the letter “N” shall appear.
XXX Is a product identifier, unique when combined with the responsible party’s Grantee Code, of at least one and up
to nine alphanumeric characters (including one or more dashes (-) if desired. A dash shall not appear as the first or
last character nor shall the identifier consist entirely of dashes). The responsible party shall define this identifier.
Label Physical Characteristics
The information required above shall be permanently affixed and legible without magnification. It may be etched,
engraved, stamped, indelibly printed, or otherwise permanently marked. Alternatively, the required information may
be permanently marked on a nameplate of metal, plastic or other material fastened to the enclosure by welding,
riveting or with a permanent adhesive. Such a nameplate shall be able to last for the expected lifetime of the
equipment and shall not be readily detachable.
Labeling Continuity and Changes
The labeling content and format requirements in effect when a product was approved shall be effective for the life of
the product. The labeling content and format requirements in effect at approval shall also continue to be effective for
modified products. However, the responsible party shall have the option of conforming a product's labeling to current
content and format requirements at any time.
Other Label Requirements
The label shall be placed in one of the following locations in a location where it can be found after installation:
• on an outside surface
• inside a readily available access door or panel
• on another readily accessible surface
For example, the label should not be placed on the rear of a permanently wall-mounted device in a manner such that
it is not readily accessible.
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Canadian Labeling Requirements (for Dial-Up Modems)
The following requirements are established under section 69.3 of the Telecommunications Act for purposes of
section 5 of the Telecommunications Apparatus Regulations.
Registered equipment shall bear the following identifying marks, and the Declaring Party shall ensure that these
marks are permanently affixed to the equipment:
(a) The registration number — Specifications of this mark are given in the document: Self-Marking of the
Certification/Registration Number on Terminal Equipment — Application Procedure and Agreement;
and
(b) The model identification number under which the product was registered.
A statement of compliance with Industry Canada requirements, such as the one given below, shall accompany
each unit of equipment whether registered under this procedure or previously certified:
"This product meets the applicable Industry Canada technical specifications"
For terminal equipment intended for connection to loop-start or ground-start interfaces, the Ringer Equivalence
Number (REN) must be calculated as per Section 1.8 of CS-03, Part I. A REN higher than that determined may
be assigned by manufacturers to allow for production variations. The REN must be marked on the terminal
equipment itself or added to the note below. A note similar to the following shall accompany each unit of
equipment whether registered under this procedure or previously certified:
"The Ringer Equivalence Number is an indication of the maximum number of devices allowed to be
connected to a telephone interface. The termination on an interface may consist of any combination of
devices subject only to the requirement that the sum of the RENs of all the devices does not exceed
five".
Pursuant to section 69.3 of the Telecommunications Act, certified or self-declared TE will bear a valid identifying
certification number or registration number. The marking of the certification or registration number on the product
shall be as follows:
(a) TAC holder/DP will be responsible for permanently affixing the certification/registration number on the
TE. The certification/registration number (see example below) identifies Certified or self-declared TE to
the public, representatives of the telecommunications common carriers, the Department, and other
interested parties. The letter height must be no less than 1.5 mm and the letters must be legible without
magnification.
(b) For integrated devices, e.g. a modem or one that is intended to become a sub-assembly of host
equipment e.g. a data terminal, computer etc. that are designed to interface directly with the network,
the certification/registration number shall be affixed to the integrated device itself.
(c) The certification/registration number for a packaged TE will denote that the total package has been
registered. However, the marking will normally be placed on that unit of the package which connects to
the network; e.g., in a PBX the marking will be placed on the common equipment which connects to the
network, rather than on plug-in components which may be added later. The Terminal Equipment List will
show the common equipment but not the standard station apparatus or any proprietary station
apparatus.
(d) The marking format of the certification/registration number is as follows:
IC: XXXXXX-YYYYYYYY
Where:
• The letters "IC" have no other meaning or purpose than to identify the Industry Canada
certification/registration number, and
• “XXXXXX-YYYYYYYY” is the certification/registration number; “XXXXXX” is the Company Number¹
(CN); it consists of up to six alphanumeric characters (A-Z, 0-9) assigned by Industry Canada; and
“YYYYYYYY” is the Unique Product Number (UPN); it consists of up to eight alphanumeric
characters (A-Z, 0-9) assigned by the applicant. Other characters, (such as & # *-) may not be
used. Alphabetic characters must be capitalized.
¹ Note: The Company Number of registered equipment ends with an alphabetic character.
(e) Certification Numbers granted prior to the implementation of the above marking format are
grandfathered.
(i) For previously certified TE, the self-marking format shall consist of the old certification number
preceded by “IC:” For example, if the certification number is “123 1234 A”, then the self-mark would
read “IC: 123 1234 A”.
(ii) For a new model that is registered to a family of previously certified TE, the self-marking format
shall be: IC: XXXXXX-ZZZZZZZZ
Where:
• “XXXXXX” is the Company Number, as in (d) above; and
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Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 27
• “ZZZZZZZZ” is either the old certification number minus the old company number, or a new
Unique Product Number assigned by the applicant. For example, if a new model is registered
to the family of products with certification number “123 1234 A”, and that the Company Number
for the registration is “123A”, then the self-mark for this new model would read “IC: 123A-1234
A”. If the applicant decides to replace “1234 A” with a new UPN, say “5678", then the self-mark
would read “IC: 123A-5678".
Label Examples (for Dial-Up SocketModems)
Note: These do not apply to the Wireless GSM/GPRS and CDMA products.
This label shows the modem
model (M/N), build option
(B/O), date of manufacture
(DOM), serial number, and
North America and European
Union regulatory information.
This is a Telecom
compliance label.
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Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 28
Regulatory Compliance Statements
EMC, Safety, and R&TTE Directive Compliance
The CE mark is affixed to this product to confirm compliance with the following European Community
Directives:
Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States
relating to electromagnetic compatibility;
and
Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of Member States
relating to electrical equipment designed for use within certain voltage limits;
and
Council Directive 1999/5/EC of 9 March on radio equipment and telecommunications terminal
equipment and the mutual recognition of their conformity.
International Modem Restrictions
Some dialing and answering defaults and restrictions may vary for international modems. Changing settings
may cause a modem to become non-compliant with national telecom requirements in specific countries.
Also note that some software packages may have features or lack restrictions that may cause the modem to
become non-compliant.
EMC Requirements for the United States
FCC Part 15 Regulation
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio frequency energy, and if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Plug the equipment into an outlet on a circuit that is different from the one used by the receiver.
Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation of this device is subject to the following
conditions: (1) This device may not cause harmful interference, and (2) this device must accept any
interference that may cause undesired operation.
WARNING – Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
EMC Requirements for Industry Canada
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Reglement Canadien sur le matériel
brouilleur.
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New Zealand Telecom Warning Notice
1. The grant of a Telepermit for any item of terminal equipment indicates only that Telecom has
accepted that the item complies with minimum conditions for connection to its network. It indicates
no endorsement of the product by Telecom, nor does it provide any sort of warranty. Above all, it
provides no assurance that any item will work correctly in all respects with another item of
Telepermitted equipment of a different make or model, nor does it imply that any product is
compatible with all of Telecom’s network services.
This equipment is not capable under all operating conditions of correct operating conditions of
correct operation at the higher speed which it is designated. 33.6 kbps and 56 kbps connections
are likely to be restricted to lower bit rates when connected to some PSTN implementations.
Telecom will accept no responsibility should difficulties arise in such circumstances.
2. Immediately disconnect this equipment should it become physically damaged, and arrange for its
disposal or repair.
3. This modem shall not be used in any manner which could constitute a nuisance to other Telecom
customers.
4. This device is equipped with pulse dialing, while the Telecom standard is DTMF tone dialing. There
is no guarantee that Telecom lines will always continue to support pulse dialing.
Use of pulse dialing, when this equipment is connected to the same line as other equipment, may
give rise to 'bell tinkle' or noise and may also cause a false answer condition. Should such
problems occur, the user should NOT contact the Telecom Faults Service.
The preferred method of dialing is to use DTMF tones, as this is faster than pulse (decadic) dialing
and is readily available on almost all New Zealand telephone exchanges.
5. Warning Notice: No '111' or other calls can be made from this device during a mains power failure.
6. This equipment may not provide for the effective hand-over of a call to another device connected to
the same line.
7. Some parameters required for compliance with Telecom’s Telepermit requirements are dependent
on the equipment (PC) associated with this device. The associated equipment shall be set to
operate within the following limits for compliance with Telecom’s Specifications:
For repeat calls to the same number:
• There shall be no more than 10 call attempts to the same number within any 30 minute
period for any single manual call initiation, and
• The equipment shall go on-hook for a period of not less than 30 seconds between the end
of one attempt and the beginning of the next attempt.
For automatic calls to different numbers:
• The equipment shall be set to ensure that automatic calls to different numbers are spaced
such that there is no less than 5 seconds between the end of one call attempt and the
beginning of another.
8. For correct operation, total of the RN’s of all devices connected to a single line at any time should
not exceed 5.
South African Statement
This modem must be used in conjunction with an approved surge protection device.
Other
The above country-specific examples do not cover all countries with specific regulations; they are included
to show you how each country may differ. If you have trouble determining your own country's requirements,
check with Multi-Tech's Technical Support for assistance.
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Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 30
Restriction of the Use of Harzardous
Substances (RoHS)
Certificate of Compliance
2002/95/EC
Multi-Tech Systems Inc. confirms that MTxxxxSMI now complies with the chemical concentration limitations set
forth in the directive 2002/95/EC of the European Parliament (Restriction Of the use of certain Hazardous
Substances in electrical and electronic equipment - RoHS)
MTxxxxSMI does not contain the following banned chemicals:
Lead, [Pb] > 1000 PPM
Mercury, [Hg] > 1000 PPM
Hexavalent Chromium, [Cr+6] > 1000 PPM
Cadmium, [Cd] > 100 PPM
Polybrominated Biphenyl, [PBB] > 1000 PPM
Polybrominated Diphenyl Ether, [PBDE] > 1000 PPM
Moisture Sensitivity Level (MSL) =1
Tin Whisker Growth = None detected
Maximum Soldering temperature = 260C (wave only)
Notes:
1. Lead usage in some components is exempted by the following RoHS annex; therefore, higher lead
concentration would be found in some modules (>1000ppm).
• Lead in high melting temperature type solders (i.e., tin-lead solder alloys containing more than 85%
lead).
• Lead in electronic ceramic parts (e.g., piezoelectronic devices).
2. Moisture Sensitivity Level (MSL) – Analysis is based on the components/material used on the board.
3. Tin Whisker Study was done per NEMI guidelines (Elevated temperature cycle of 60°C and non-condensing
relative humidity of 87% exposed to this environment for 1000 hours).
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 31
Waste Electrical and Electronic Equipment
Statement
WEEE Directive
The WEEE directive places an obligation on EU-based manufacturers, distributors, retailers, and importers to
take-back electronics products at the end of their useful life. A sister Directive, ROHS (Restriction of Hazardous
Substances) complements the WEEE Directive by banning the presence of specific hazardous substances in the
products at the design phase. The WEEE Directive covers all Multi-Tech products imported into the EU as of
August 13, 2005. EU-based manufacturers, distributors, retailers and importers are obliged to finance the costs
of recovery from municipal collection points, reuse, and recycling of specified percentages per the WEEE
requirements.
Instructions for Disposal of WEEE by Users in the European Union
The symbol shown below is on the product or on its packaging, which indicates that this product must not be
disposed of with other waste. Instead, it is the user’s responsibility to dispose of their waste equipment by
handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. The
separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural
resources and ensure that it is recycled in a manner that protects human health and the environment. For more
information about where you can drop off your waste equipment for recycling, please contact your local city
office, your household waste disposal service or where you purchased the product.
July, 2005
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 32
Flash Upgrade
Your modem is controlled by semi-permanent firmware, which is stored in flash memory. Multi-Tech's firmware is
nonvolatile; that is, it remains stored in memory when the modem is turned off and can be upgraded as new features
are added.
Multi-Tech's Flash Wizard can be downloaded from Multi-Tech’s FTP site and is available on CD. Use this Flash
Wizard for upgrading your firmware. Documentation for using the Flash Wizard is included with the wizard.
The following table shows you which products support the Flash Wizard.
SocketModem MT5600SMI No Flash Upgrade
SocketModem MT5656SMI No Flash Upgrade
SocketModem MT5634SMI-xx Flash Wizard Software for Windows
Flash Wizard Software for Linux
Multi-Tech Flash Wizard Protocol
SocketModem MT2456SMI-22 No Flash Upgrade
SocketModem MT2456SMI-IP XMODEM serial port upgrade or TFTP Ethernet
upgrade. See the next page for information about the
XMODEM upgrade.
SocketEthernet IP MTXCSEM XMODEM serial port upgrade or TFTP Ethernet
upgrade. See the next page for information about the
XMODEM upgrade.
SocketModem ISDN MT128SMI Flash Wizard Software for Windows
Flash Wizard Software for Linux
Multi-Tech Flash Wizard Protocol
SocketModem GPS/GPRS/CDMA MTSMC No Flash Upgrade
SocketWireless Bluetooth No Flash Upgrade
Flash Wizard Software for Windows: ftp://ftp.multitech.com/Utilities/FlashWizard/
Flash Wizard Software for Linux: http://mtflashwiz.sourceforge.net/
Important Note: Do not use the Flash Wizard for the wireless modems. Contact Multi-Tech for wireless modem
firmware upgrade directions.
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XMODEM Serial Port Upgrade or TFTP Ethernet Upgrade
The SocketEthernet IP Module, for example, contains a 2 MB flash wherein the boot image, the firmware and
configuration files are stored in a compressed format. The flash can easily be upgraded both locally as well as
remotely.
Serial Port Upgrade
The flash of the SocketEthernet IP can be upgraded locally through serial port using the upload feature of
serial applications.
Serial Port Configuration
The default serial port parameters should be:
Data length – 8 bits
Parity – None
Stop bits – 1
Baud-rate of the serial port to which the SocketEthernet IP Module is connected should be set to
115200 bps for proper operation.
Example of a Serial Flash Upgrade
Following steps explain the procedure to upgrade a flash using the serial COM port (serial flash
upgrade).
Connect the SocketEthernet IP Module to a PC COM Port.
• Open an application through which we can access the serial device (e.g., Meterm, zoc,
hyperterm).
• Reboot the SocketEthernet IP Module.
• Wait for the boot message and prompt “press d to download” to appear.
• Press d when prompted.
• Select the XMODEM Protocol from the Terminal application.
• Choose a file (MTXCSEM-TFTP-…) file to be uploaded.
• Perform a file upload.
The SocketEthernet IP Module reboots and will be up after a few seconds (10-15 seconds).
Chapter 1 – Universal Socket Connectivity
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TFTP Ethernet Upgrade
The flash can be upgraded remotely through the Ethernet using TFTP.
The SocketEthernet IP Module flash contains two main files, which are required for an upgrade.
1. Binary File
The binary file contains the firmware of the Module.
The name of this binary file would be in the following format.
MTXCSEM-TFTP-v<version>w-<date in ddMmmyyyy format>
2. Gun-zipped http.tar.gz File
This contains the HTML pages of the serial device and other files related to it, such as http-
host-param (http page configuration file).
The name of this tar file would always be http.tar.gz
Enabling TFTP Server
Enable TFTP server on SocketEthernet IP Module by issuing the following command:
# set ip tftp enable
OK
Example of an Ethernet Flash Upgrade
The IP module can be remotely upgraded over a network. Make sure a TFTP client is already installed
on the machine. The following steps explain the method to perform flash upgrade from Ethernet.
• Make sure the SocketEthernet IP Module is reachable on the LAN.
• Perform a TFTP to the SocketEthernet IP Module from a TFTP client.
– Set binary mode ON. Note: This step is very important.
– Binary
• Put the binary file.
– put <binary filename>
• Exit the TFTP session.
– Quit
The SocketEthernet IP Module reboots after it has been successfully upgraded.
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Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 35
Multi-Tech Systems, Inc. Flash Programming Protocol
This information is provided exclusively for the users of Multi-Tech Systems, Inc. SocketModems, specifically the
MT5634SMI and the MT128SMI. Multi-Tech Systems, Inc. SocketModem owners have the right to use, modify, and
incorporate this code into other products provided they include the Multi-Tech Systems, Inc. notice and the
associated copyright notice with any such product.
Copyright (C) Multi-Tech Systems, Inc. 1995
All Right Reserved
The flash programming protocol is provided "AS IS” without warranty.
Important: When interacting with the boot code, it is possible to make the modem inoperable.
Use extreme caution.
Programming the Modem
There are two ways to start flash programming a modem. It can be programmed
1. From “AT” mode
2. When the modem powers up.
The following table shows how a modem is programmed.
DTE Modem Comments
AT*FS\r This effectively “restarts” the modem so that it enters the boot code.
Handshake Sequence
M’s Many M’s are sent (10 milliseconds apart) at 19200 baud.
This is where the handshake starts if the modem is just powered up.
U U is sent at 19200 baud if M’s are received within 100 milliseconds of
power up. If the M’s are not received within 100 milliseconds, then
the modem starts up normally. If the AT*FS command is used, then
you have 1 second (1000mS) to perform the handshake.
D Sent at 19200 baud.
M M if can receive at 9600/19200/38400/57600/115200
I|J|K|L|M I if modem will be programmed at 9600
J if modem will be programmed at 19200
K if modem will be programmed at 38400
L if modem will be programmed at 57600
M if modem will be programmed at 115200
\r\nOK\r\n Modem is ready to be programmed
Program Sequence:
DTE Modem Comments
ATFLP\r Request to the modem to program
G Modem is ready for next program packet
[Length High] High byte of data packet length
[Length Low] Low byte of data packet length
Packet lengths can be up to 4096 bytes in size for most boot code
versions
[Address High] High byte of program address
[Address Middle] Middle byte of program address
[Address Low] Low byte of program address
Addresses are 3 byte values with a range of 00000h-FFFFFh
[Data Bytes] These are the data bytes to be programmed at the address specified
above. They must be the same number of bytes as specified above.
[Checksum] This checksum is generated by exclusive ORing together all of the
Data Bytes (do not include the Length or Address bytes in that
calculation).
\nOK\r\n
\nERROR\r\n
If bytes are programmed and verified.
If verify fails or checksum is bad.
Retry the block 3 times on an ERROR.
….
….
More of the above sequence until all the data bytes have been sent
to the modem.
ATFLEND\r This ends programming and restarts the modem.
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Other Supported Boot Code Commands
2.1 ATI0 - returns 000 or 247 for ISDN
2.2 ATI1 - returns boot code version number MM.mmn where
MM = unique code for each different platform that has boot code
mm = version number of boot code
n = version letter of the boot code
Examples: 2.05e, 2.12d, 35.15
ATI4- Boot code date and time.
Other Programming Concerns
1. The values programmed into Addresses 0000h, 0001h and 0002h should always be forced to
C3h 00 01 (i.e., JP 100h).
This is because the boot code starts at address 100h, while all normal modem code starts at 200h. By
allowing 0000h to be programmed to a jump value other than 0100h, the boot code would be bypassed
and no further upgrades could occur.
2. Addresses 0100h-01FFh through 70000h-7FFFFh should not be allowed to be programmed under
normal circumstances, as this is the main body of the boot up code.
3. The packets sent to the modem must be presorted by address and aligned on 128 byte boundaries (i.e.,
each packet must start on an address that is a multiple of 128).
4. The packets should also be a minimum of 128 bytes with the non-programmed bytes set to the hex
value of FF.
5. The packets sent to the modem must not span a 4K boundary (i.e., start the packet before it and go
over the boundary in the middle of the packet).
6. The 10-millisecond delay between M’s at the beginning of the handshake is so that the modem can
sync up to the start bit. If the M’s are sent one right after another, a data bit might be mistaken as a start
bit.
7. Multi-Tech firmware files are in Intel Hex Format and must be read in and formatted into 128-4096 byte
blocks before being sent to the modem.
Information about the Intel Hex Format
An Intel Format Hex File is a text file consisting of “records”, one per line, that start with a “:” character and
include only digits 0-9 and letters A-F. There are three different record types: Extended Address Records, Data
Records, and End of File Records.
Data records contain the actual data that is to be programmed into a device. The address contained in the data
record needs to be combined with an extended address (by adding the extended address shifted four bits left to
the data record address) to determine the actual programming address for the data. If no extended address
record is before a given data record in the file, then the extended address value is assumed to be zero.
Data Record
Char Pos Field Type Value Description
1 Record Start “:”
2-3 Data Byte Count “NN” Maximum value is FF (which is 255 data bytes).
Typical is 20h which causes the hex record to fit in 80
columns.
4-7 Address “XXXX” Lower 16 bits of 20 bit address, most significant byte
first. This must be added to Extended Address left
shifted four bits.
8-9 Record Type “00” Data Record
10+N Data Bytes “YY..YY” The data bytes in hex. Each byte is two characters.
NN+1,2 Checksum “ZZ” Zero minus the two’s complement addition of all data
hex values.
NN+3,4 End of Line “\r\n” Carriage Return followed by a Line Feed
Example Data Record in Intel Format
:2000A0005BB66DDBB66CD8B060C183060D1B366DDBB66DDBB76FDFBF7EFDFBF6EDDBB66DD4
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 37
Extended Address Record
Char Pos Field Type Value Description
1 Record Start “:”
2-3 Data Byte Count “02” Always 2 bytes for this record type
4-7 Address “0000” Not used for this record type (must be zero)
8-9 Record Type “02” Extended Address Record
10-13 Extended Address “EEEE” Top 16 bits of 20 bit address, most significant byte first
14-15 Checksum “ZZ” Zero minus the two’s complement addition of all data hex values
16-17 End of Line “\r\n” Carriage Return followed by a Line Feed
Example Extended Address Record in Intel Format :020000021000EC
End of File Record
Char Pos Field Type Value Description
1 Record Start “:”
2-3 Data Byte Count “00” Always 2 bytes for this record type
4-7 Address “0000” Transfer Address (usually be zero)
8-9 Record Type “01” End of File Record
10-11 Checksum “ZZ” Zero minus the two’s complement addition of all data hex values
12-13 End of Line “\r\n” Carriage Return followed by a Line Feed
Example End of File in Intel Format :00000001FF
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 38
Wireless Account Activation
Multi-Tech – A Certified National Activation Agent
Multi-Tech Systems, Inc. is a certified national Cingular and Sprint activation agent for Cingular and Sprint wireless.
To obtain information about available data plans and to purchase and activate a wireless data account, contact Multi-
Tech at:
888-288-5470
Pre-Configured Multi-Tech Products
Each Multi-Tech CDMA wireless product has been pre-configured to operate on specific CDMA wireless networks.
Please see the individual Cingular, Sprint, and Verizon Activation Notices
included in the Developer Kit.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 39
Multi-Tech Warranty Statement
Multi-Tech Systems, Inc., (hereafter “MTS”) warrants that its products will be free from defects in material or
workmanship for a period of two, five, or ten years (depending on model) from date of purchase, or if proof of
purchase is not provided, two, five, or ten years (depending on model) from date of shipment.
MTS MAKES NO OTHER WARRANTY, EXPRESS OR IMPLIED, AND ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.
This warranty does not apply to any products which have been damaged by lightning storms, water, or power surges
or which have been neglected, altered, abused, used for a purpose other than the one for which they were
manufactured, repaired by Customer or any party without MTS’s written authorization, or used in any manner
inconsistent with MTS’s instructions.
MTS’s entire obligation under this warranty shall be limited (at MTS’s option) to repair or replacement of any products
which prove to be defective within the warranty period or, at MTS’s option, issuance of a refund of the purchase price.
Defective products must be returned by Customer to MTS’s factory — transportation prepaid.
MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES, AND UNDER NO CIRCUMSTANCES WILL ITS
LIABILITY EXCEED THE PRICE FOR DEFECTIVE PRODUCTS.
Repair Procedures for U.S. and Canadian Customers
In the event that service is required, products may be shipped, freight prepaid, to our Mounds View, Minnesota
factory:
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, MN 55112
Attn: Repairs, Serial # ____________
A Returned Materials Authorization (RMA) is not required. Return shipping charges (surface) will be paid by MTS to
destinations in U.S. and Canada.
Please include, inside the shipping box, a description of the problem, a return shipping address (must have street
address, not P.O. Box), your telephone number, and if the product is out of warranty, a check or purchase order for
repair charges.
For out-of-warranty repair charges, go to COMPANY/Policies/warranty/
Extended two-year overnight replacement service agreements are available for selected products. Please call MTS
customer service at (888) 288-5470 or visit our web site at
http://www.multitech.com/PARTNERS/Programs/overnight_replacement/ for details on rates and coverage’s.
Please direct your questions regarding technical matters, product configuration, verification that the product is
defective, etc., to our Technical Support department at (800) 972-2439 or email support@multitech.com. Please
direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting
department at (800) 328-9717 or (763) 717-5631, or email mtsrepair@multitech.com.
Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-
caused damages are billed on a time-plus-materials basis.
Chapter 1 – Universal Socket Connectivity
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 40
Repair Procedures for International Customers (Outside
U.S.A. and Canada)
Your original point of purchase Reseller may offer the quickest and most economical repair option for your Multi-Tech
product. You may also contact any Multi-Tech sales office for information about the nearest distributor or other repair
service for your Multi-Tech product. The Multi-Tech sales office directory is available at
http://www.multitech.com/COMPANY/contact_us/
In the event that factory service is required, products may be shipped, freight prepaid to our Mounds View, Minnesota
factory. Recommended international shipment methods are via Federal Express, UPS or DHL courier services, or by
airmail parcel post; shipments made by any other method will be refused. Please include, inside the shipping box, a
description of the problem, a return shipping address (must have street address, not P.O. Box), your telephone
number, and if the product is out of warranty, a check in U.S. dollars drawn on a U.S. bank or your company’s
purchase order for repair charges. Repaired units shall be shipped freight collect, unless other arrangements are
made in advance.
Please direct your questions regarding technical matters, product configuration, verification that the product is
defective, etc., to our Technical Support department nearest you or email support@multitech.com. When calling the
U.S., please direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair
Accounting department at +(763) 717-5631 in the U.S.A., or email mtsrepair@multitech.com.
Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-
caused damages are billed on a time-plus-materials basis.
Repair Procedures for International Distributors
International distributors should contact their MTS International sales representative for information about the repairs
for their Multi-Tech product.
Please direct your questions regarding technical matters, product configuration, verification that the product is
defective, etc., to our International Technical Support department at +(763)717-5863. When calling the U.S., please
direct your questions regarding repair expediting, receiving, shipping, billing, etc., to our Repair Accounting
department at +(763) 717-5631 in the U.S.A. or email mtsrepair@multitech.com.
Repairs for damages caused by lightning storms, water, power surges, incorrect installation, physical abuse, or user-
caused damages are billed on a time-plus-materials basis.
Replacement Parts
SupplyNet, Inc. can supply you with replacement power supplies, cables, and connectors for selected Multi-Tech
products. You can place an order with SupplyNet via mail, phone, fax, or the Internet at the following addresses:
Mail: SupplyNet, Inc.
614 Corporate Way
Valley Cottage, NY 10989
Phone: 800 826-0279
Fax: 914 267-2420
Email: info@thesupplynet.com
Internet: http://www.thesupplynet.com
October 2005
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 41
Chapter 2
SocketModem
MT5600SMI
MT5656SMI
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 42
Chapter 2 – SocketModem
(MT5600SMI & MT5656SMI)
Introduction
The Multi-Tech SocketModem creates communication-ready devices by integrating data/fax/voice functionality into a
single product design. The SocketModem is a space-efficient (1" × 2.5"), embedded modem that provides V.92 or
V.34/33.6K data communication. The complete, ready-to-integrate modem dramatically reduces development time
and costs for system designers.
The MT5600SMI/MT5656SMI SocketModem is a standard 64-pin modem used for integrating data communications.
• It is a single-port modem that integrates the controller, DSP, and DAA in a 1" x 2.5" form factor and
communicates to a host controller via an asynchronous serial interface.
• It is available with an 8-bit parallel interface
Product Ordering Information
Product Description Region Order this
Product
3
MT5600SMI
MT5600SMI-32 V.32bis Serial Data/Fax - 5 V Global
MT5600SMI-L-32 V.32bis Serial Data/Fax - 3.3 V Global
MT5600SMI-P-32 V.32bis Parallel Data/Fax - 5 V Global
MT5600SMI-34 V.34bis Serial Data/Fax - 5 V Global
MT5600SMI-L-34 V.34bis Serial Data/Fax - 3.3 V Global
MT5600SMI-X-L-34 V.34bis Serial Data/Fax Exclude LED pins - 3.3 V Global
MT5600SMI-P-34 V.34bis Parallel Data/Fax - 5 V Global
MT5600SMI-P-L-34 V.34bis Parallel Data/Fax - 3.3 V Global
MT5600SMI-92 V.92 Serial Data/Fax - 5 V Global
MT5600SMI-L-92 V.92 Serial Data/Fax - 3.3 V Global
MT5600SMI-X-L-92 V.92 Serial Data/Fax Exclude LED pins - 3.3 V Global
MT5600SMI-P-92 V.92 Parallel Data/Fax - 5 V Global
MT5600SMI-P-L-92 V.92 Parallel Data/Fax - 3.3 V Global
Telecom Label
MT5600SMI-LS MT5600SMI-Global Regulatory Label Global
MT5656SMI
MT5656SMI-V-32 V.32bis Serial Data/Fax, Speakerphone Interface - 5 V U.S./Can/Euro
MT5656SMI-P-V-32 V.32bis Parallel Data/Fax, Speakerphone Interface - 5 V U.S./Can/Euro
MT5656SMI-V-34 V.34 Serial Data/Fax, Speakerphone Interface - 5 V U.S./Can/Euro
MT5656SMI-P-V-34 V.34 Parallel Data/Fax, Speakerphone Interface - 5 V U.S./Can/ Euro
MT5656SMI-V-92 V.92 Serial Data/Fax, Speakerphone Interface - 5 V U.S./Can/Euro
MT5656SMI-P-V-92 V.92 Parallel Data/Fax, Speakerphone Interface - 5 V U.S./Can/Euro
Developer Kits
MTSMI-DK SocketModem Serial Developer Kit Global
MTSMI-P-DK SocketModem Parallel Developer Kit Global
How to Read the Product Codes in the Above Table:
32 V.32bis/14.4K data rate L 3.3 V power input (default is 5 V)
34 V.34/33.6K data rate P Parallel interface (serial is default)
92 V.92/56K data rate X Excludes LED pinouts
V Voice (speakerphone) DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 43
Developer Kit
A Developer Kit is available. The serial kit allows you to plug in the SocketModem and use it as a serial modem for
testing, programming, and evaluation. The parallel kit turns the parallel module into an ISA modem. Each kit includes:
• Developer board with an RS-232 DB-25 connector
• Wall Power Adapter
• RJ-11 Jack
• RS-232 Cable
• Developer Kit CD
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 44
Technical Specifications
The SocketModem meets the following specifications:
Category Description
Data Format Serial or parallel interface available for all products
Data V.92; V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, V.21 Bell 212A & Bell 103 (see product
ordering chart at the beginning of this chapter)
Error Correction V.42 (LAP-M or MNP 2–4)
Data Compression V.42bis, MNP 5
Fax V.17, V.29, V.27ter, V.21 ch.2
Fax Class Class 1 – All MT5600SMI builds and all MT5656SMI builds
Class 1.0 – MT5600SMI builds only
Class 2 (does not include 2.0 & 2.1) – MT5656SMI builds only
Modes of Operation Full duplex over dial-up lines; data mode, command mode, online command mode
Advanced Extension pickup detection, remote hang-up detection, line-in-use detection, digital PBX
detection and protection
Flow Control XON/XOFF (software), RTS/CTS (hardware)
Command Buffer 60 characters
Interface Serial or 8-bit parallel interface
Telephony/TAM V.253 commands: V.253
2-bit and 4-bit ADPCM, 8-bit linear PCM, and 4-bit IMA coding
8 kHz sample rate
Concurrent DTMF, distinctive ring, and U.S. Caller ID detection
Weight 0.6 oz. (0.017 kg.)
Dimensions 1.045” × 2.541” × 0.680” (2.65 x 6.45 x 1.7 cm)
Power Consumption 3.3 V (MT5600SMI Only) Typical: 115 mA (.38W @ 3.3 V DC);
Maximum: 116 mA (.41 W @ 3.47 V DC)
5 V (MT5600SMI & MT5656SMI) Typical: 117 mA (.58 W @ 5 V DC);
Maximum: 118 mA (.61 W @ 5.25 V DC)
Operational
Temperature
0 to +70° C
Humidity Range: 20 to 90% (non-condensing)
Storage Temp. -10º to +85° C
Voltage 3.3 V Serial (see product ordering chart at the beginning of this chapter)
5 V Serial or Parallel
Manufacturing
Information
Trade Name: SocketModem
Model Number: MT5600SMI
Registration No: AU7USA-46014-MD-E
Ringer Equivalence: 0.1B
Modular Jack (USOC): RJ11
Approvals Safety Certifications
UL 60950
cUL60950
EN 60950
ACA TS 001 / AS 3260
CCC
EMC Approvals
FCC Part 15 (Class B)
Canada (Class B)
EN 55022 (Class B)
EN 55024
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 45
Category Description
Intelligent Features
Integrates the controller, data pump, and data access arrangement (DAA) in one module.
Backward compatibility with lower speed data standards
V.22bis Fast Connect
FastPOS (V.29)
Voice send and receive functions
LED pin output option
Industry-standard error correction and data compression
DTMF detection and distinctive ring
Audio circuit outputs for audio call-progress monitoring
Three-number storage for automatic dialing capabilities and non-volatile memory (NoVRAM)
to store user profiles
Speaker interface for call progress monitoring
Full-duplex data transmission over dial-up lines
Line quality monitoring and retrain
Line protection circuitry included
Auto-dial, redial, and auto-answer
Pulse or tone dial
Call status display
Extension pickup detection
U.S. Caller ID detection
Remote hang-up detection
Digital PBX detection and protection
60-character command line buffering
AT command compatibility
Global approvals with a single module design
Intelligent DAA technology detects line status
MT5656SMI supports speaker/microphone features
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 46
SocketModem Configuration
MT5600SMI Serial Configuration
The serial interface use an 16-pin interface to provide an on-board DAA with tip and ring connections, audio
circuit for call-progress monitoring and serial interface via logic level signals.
Note: The bolded, shaded pins are the active SocketModem pins.
Serial SocketModem Pinout
MT5600SMI (Available with or without LEDs)
MT5656SMI Serial with Voice Configuration
Serial SocketModem
MT5656SMI Pinout with Voice Configuration
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 47
Parallel Configuration
Note: The parallel configuration is not compatible with the serial universal socket.
The parallel interface SocketModem uses a 22-pin interface to provide an on-board DAA with tip and ring
connections, audio circuit for call-progress monitoring, and parallel interface.
Parallel SocketModem Pinout
Parallel Pin Descriptions
Pin # Signal
Name
In Out
Type
Description
1 Tip I/O
Telephone Line Interface – TIP
2 Ring I/O
Telephone Line Interface – RING
24 –RESET I Modem Reset (CMOS input with pull-up). The active low –RESET input
resets the SocketModem logic and returns the AT command set to the original
factory default values or to "stored values" in NVRAM.
The modem is ready to accept commands within 6.5 seconds of power-on or
reset. Reset must be asserted for a minimum of 15ms.
25 A1
Host Bus Address Line 1
26 DGND GND
Digital Ground
27 D7 O
Host Bus Data Line 7
29 D2 O
Host Bus Data Line 2
30 INT O
Host Bus Interrupt Line (Active High, Resets on Low)
31 A0 I
Host Bus Address Line 0
32 –WT I
Host Bus Write. When low, allows host to write to SocketModem.
33 –RD I
Host Bus Read. When low, allows host to read from SocketModem.
34 A2 I
Host Bus Address Line 2
35 D4 O
Host Bus Data Line 4
36 D5 O
Host Bus Data Line 5
37 D0 O
Host Bus Data Line 0
38 D1 O
Host Bus Data Line 1
39 D3 O
Host Bus Data Line 3
40 –CS I
Host Bus Chip Select (Active Low)
41 D6 O
Host Bus Data Line 6
61 VCC PWR
3.3 V or 5 V Supply (depends upon model).
63 AGND GND
Analog Ground. This is tied common with DGND on the SocketModem. To
minimize potential ground noise issues, connect audio circuit return to AGND.
64 SPKR O
Speaker – Call monitor.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 48
Differences - Legacy Voice Modems and
Current Modems
Differences between the SFxxxD/SP and the MT5656SMI
Note: The SFxxxD/SP is the legacy voice modem with speakerphone I/O.
Pin 54 – “VC” This pin provided a reference voltage that is available from the data pump. This pin is not
supported on the MT5656SMI SocketModem.
Pin 55 – “~Voice” This function, when active, closes the relay to switch the handset from the telephone line to a
current source to power the handset where it could be used as a speaker and microphone
interface to the modem. This pin is not provided on the SocketModem
Pin 57 – “LCS” (Line Current Sense) When enabled, the LCS input indicates whether the associated handset
of off-hook (high) or on-hook (low). This pin is not available on the MT5656SMI SocketModem,
but the functionality is part of the Smart DAA.
Pin 58 – “Telout” (Telephone Handset Output). This pin is not supported on the SocketModem.
Pin 59 – “Telin” (Telephone Handset Input). This pin is not supported on the SocketModem.
Pin 60 – “Micm” (Microphone Modem Input). This pin is not supported on the SocketModem.
Pin 62 – “Micv” (Microphone Voice Input). This pin is supported on the MT5656SMI SocketModem in the same
way as the "SF" modem.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 49
Electrical Characteristics
3.3 V Serial SocketModem
3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 2.0 V
Input Low
Max 0.8 V
Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
2 mA, Z INT = 120 Ω
Output High
Min 2.4 V
Output Low
Max 0.5 V
Digital Input Capacitance 50pF
3.3 V Parallel SocketModem
Electrical characteristics for Parallel SocketModem devices are presented below.
3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Digital Inputs
–DS (40)
Input High
Min 2.0 V
Input Low
Max 0.8 V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)
8mA Z INT = 50Ω 2 mA Z INT = 120 Ω
Input High
Min 2.0 V
Input Low
Max 0.8 V
Digital Input/Output
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6
(41), D7 (27)
2 mA, Z INT = 120 Ω
Input High
Min 2.0 V
Output High
Min 2.4 V
Input Low
Max 0.8 V
Output Low
Max 0.5 V
Digital Output
INT (30)
2 mA, Z INT = 120 Ω
Output High
Min 2.4 V
Output Low
Max 0.5 V
Digital Input Capacitance
50pF
5 V Serial SocketModem
5 V DC Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 2 V
Input Low
Max 0.8 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min 2.4 V
Output Low
Max 0.5 V
Current Drive
15 mA
Digital Input Capacitance 5 PF
5 V Parallel SocketModem
5 V DC Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DS (40)
Input High
Min 2 V
Input Low
Max 0.8 V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), –WR (32), –RD (33)
Input High
Min 2 V
Input Low
Max 0.8 V
Digital Input / Output
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6 (41),
D7 (27)
Input High
Min 2 V
Input Low
Max 0.8 V
Current Drive
8 mA
Digital Output
INT (30)
Output High
Min 2.4 V
Output Low
Max 0.5 V
Current Drive
8 mA
Digital Input Capacitance 5 PF
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 50
Parallel Host Bus Timing Table
Symbol Parameter Min Max Units
READ (See Notes)
tAS Address Setup 5 - ns
tAH Address Hold 10 - ns
tCS Chip Select Setup 0 - ns
tCH Chip Select Hold 10 - ns
tRD RD Strobe Width 45 - ns
tDD Read Data Delay - 25 ns
tDRH Read Data Hold 5 - ns
WRITE (See Notes)
tAS Address Setup 5 - ns
tAH Address Hold 15 - ns
tCS Chip Select Setup 0 - ns
tCH Chip Select Hold 10 - ns
tWT WT Strobe Width 75 - ns
tDS Write Data Setup (see Note 4) - 20 ns
tDWH Write Data Hold (see Note 5) 5 - ns
Notes:
1. When the host executes consecutive Rx FIFO reads, a minimum delay of 2 times the internal CPU clock
cycle plus 15 ns (85.86 ns at 28.224 MHz) is required from the falling edge of RD to the falling edge of the
next Host Rx FIFO RD clock.
2. When the host executes consecutive Tx FIFO writes, a minimum delay of 2 times the internal CPU clock
cycle plus 15 ns (85.86 ns at 28.224 MHz) is required from the falling edge of WT to the falling edge of the
next Host Tx FIFO WT clock.
3. tRD' tWT = tCYC + 15 ns.
4. tDS is measured from the point at which both CS and WT are active.
5. tDWH is measured from the point at which either CS and WT become active.
6. Clock Frequency = 28.224 MHz clock.
Parallel Host Bus – Read Parallel Host Bus - Write
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 51
SocketModem Parallel Interface
The modem supports a 16550A interface in parallel interface versions. The 16550A interface can operate in FIFO
mode or non-FIFO mode. Non-FIFO mode is the same as the 16450-interface operation. FIFO mode’s unique
operations are described in this chapter.
Overview
The modem emulates the 16450/16550A interface and includes both a 16-byte receiver data first-in first-out buffer
(RX FIFO) and a 16-byte transmit data first-in first-out buffer (TX FIFO).
FIFO Mode Selected
When FIFO mode is selected in the FIFO Control Register (FCR0 = 1), both FIFOs are operative. Furthermore,
when FIFO mode is selected, DMA operation of the FIFO can also be selected (FCR3 = 1).
FIFO Mode Not Selected
When FIFO mode is not selected, operation is restricted to a 16450-interface operation.
Receive Data
Received Data is read by the host from the Receiver Buffer (RX Buffer). The RX Buffer corresponds to the
Receiver Buffer Register in a 16550A device. In FIFO mode, the RX FIFO operates transparently behind the RX
Buffer. Interface operation is described with reference to the RX Buffer in FIFO and non-FIFO modes.
Transmit Data
Transmit Data is loaded by the host into the Transmit Buffer (TX Buffer). The TX Buffer corresponds to the
Transmit Holding Register in a 16550A device. In FIFO mode, the TX FIFO operates transparently behind the TX
Buffer. Interface operation is described with reference to the TX Buffer in both FIFO and non-FIFO modes.
Receiver FIFO Interrupt Operation
Receiver Data Available Interrupt
When the FIFO mode is enabled (FCR0 = 1) and receiver interrupt (RX Data Available) is enabled
(IER0 = 1), receiver interrupt operation is as follows:
1. The Receiver Data Available Flag (LSR0) is set as soon as a received data character is available in
the RX FIFO. LSR0 is cleared when RX FIFO is empty.
2. The Receiver Data Available Interrupt code (IIR0-IIR4 = 4h) is set whenever the number of
received data bytes in the RX FIFO reaches the trigger level specified by FCR6-FCR7 bits. It is
cleared whenever the number of received data bytes in the RX FIFO drops below the trigger level
specified by FCR6-FCR7 bits.
3. The HINT interrupt is asserted whenever the number of received data bytes in the RX FIFO
reaches the trigger level specified by FCR6-FCR7 bits. HINT interrupt is de-asserted when the
number of received data bytes in the RX FIFO drops below the trigger level specified by FCR6-
FCR7 bits.
Receiver Character Timeout Interrupts
When the FIFO mode is enabled (FCR0 = 1) and receiver interrupt (Receiver Data Available) is enabled
(IER0 = 1), receiver character timeout interrupt operation is as follows:
1. A Receiver character timeout interrupt code (IIR0-IIR3 = Ch) is set if at least one received character
is in the RX FIFO, the most recent received serial character was longer than four continuous
character times ago (if 2 stop bits are specified, the second stop bit is included in this time period),
and the most recent host read of the RX FIFO was longer than four continuous character times
ago.
Transmitter FIFO Interrupt Operation
Transmitter Empty Interrupt
When the FIFO mode is enabled (FCR0 = 1) and transmitter interrupt (TX Buffer Empty) is enabled
(IER0 =1), transmitter interrupt operation is as follows:
1. The TX Buffer Empty interrupt code (IIR0-IIR3 = 2h) will occur when the TX Buffer is empty. It is
cleared when the TX Buffer is written to (1 to 16 characters) or the IIR is read.
2. The TX Buffer Empty indications will be delayed 1 character time minus the last stop bit time
whenever the following occur: THRE = 1 and there have not been at least two bytes at the same
time in the TX FIFO Buffer since the last setting of THRE was set. The first transmitter interrupt
after setting FCR0 will be immediate.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 52
Register Functional Definitions
The following table delineates the assigned bit functions for the twelve internal registers. The assigned bit functions
are more fully defined in the following paragraphs.
Internal Registers
BIT No. Register
No.
Register
Name 7 6 5 4 3 2 1 0
7 Scratch Register
(SCR) Scratch Register
6 Modem Status
Register (MSR)
Data
Carrier
Detect
(DCD)
Ring
Indicator
(RI)
Data Set
Ready
(DSR)
Clear to
Send
CTS)
Delta Data
Carrier
Detect
(DDCD)
Trailing
E
dge of Ring
Indicator
(TERI)
Delta Data
Set Ready
(DDSR)
Delta Clear
to Send
(DCTS)
5 Line Status
Register (LSR)
RX FIFO
Error
Transmitter
Empty
(TEMT)
Transmitter
Buffer
Register
Empty
(THRE)
Break
Interrupt
(BI)
Framing
Error
(FE)
Parity
Error
(PE)
Overrun
Error
(OE)
Receiver
Data
Ready
(DR)
4 Modem Control
Register (MCR)
0 0 0 Local
Loopback
Out 2 Out 1 Request
to Send
(RTS)
Data
Terminal
Ready
(DTR)
3 Line Control
Register (LCR)
Divisor
Latch
Access Bit
(DLAB)
Set
Break
Stick
Parity
Even
Parity
Select
(EPS)
Parity
Enable
(PEN)
Number
of Stop
Bits
(STB)
Word
Length
Select
Bit 1
(WLS1)
Word
Length
Select
Bit 0
(WLSO)
2 Interrupt Identify
Register (IIR)
(Read Only)
FIFOs
Enabled
FIFOs
Enabled
0 0 Pending
Interrupt ID
Bit 2
Pending
Interrupt ID
Bit 1
Pending
Interrupt ID
Bit 0
“0” if
Interrupt
Pending
2 FIFO Control
Register (FCR)
(Write Only)
Receiver
Trigger
MSB
Receiver
Trigger
LSB
Reserved Reserved DMA
Mode
Select
TX FIFO
Reset
RX FIFO
Reset
FIFO
Enable
1
(DLAB = 0)
Interrupt Enable
Register (IER)
0 0 0 0 Enable
Modem
Status
Interrupt
(EDSSI)
Enable
Receiver
Line Status
Interrupt
(ELSI)
Enable
Transmitter
Holding
Register
Empty
Interrupt
(ETBEI)
Enable
Received
Data
Available
Interrupt
(ERBFI)
0
(DLAB = 0)
Transmitter Buffer
Register
(THR)
Transmitter FIFO Buffer Register (Write Only)
0
(DLAB = 0)
Receiver Buffer
Register (RBR)
Receiver FIFO Buffer Register (Read Only)
1
(DLAB = 1)
Divisor Latch MSB
Register (DLM)
Divisor Latch MSB
0
(DLAB = 1)
Divisor Latch LSB
Register (DLL)
Divisor Latch LSB
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 53
IER – Interrupt Enable Register
(Addr = 1, DLAB = 0)
The IER enables five types of interrupts that can separately assert the HINT output signal (See the Interrupt
Sources and Reset Control table in the IIR section of this chapter). A selected interrupt can be enabled by
setting the corresponding enable bit to a 1, or disabled by setting the corresponding enable bit to a 0.
Disabling an interrupt in the IER prohibits setting the corresponding indication in the IIR and assertion of
HINT. Disabling all interrupts (resetting IER0 – IER3 to a 0) inhibits setting of any Interrupt Identifier Register
(IIR) bits and inhibits assertion of the HINT output. All other system functions operate normally, including the
setting of the Line Status Register (LSR) and the Modem Status Register (MSR).
The IER enables five types of interrupts that can separately assert the HINT output signal. A selected
interrupt can be enabled by setting the corresponding enable bit to a 1, or disabled by setting the
corresponding enable bit to a 0. Disabling an interrupt in the IER prohibits setting the corresponding
indication in the IIR and assertion of HINT. Disabling all interrupts (resetting IER0 - IER3 to a 0) inhibits
setting of any Interrupt Identifier Register (IIR) bits and inhibits assertion of the HINT output. All other system
functions operate normally, including the setting of the Line Status Register (LSR) and the Modem Status
Register (MSR).
Bits 7-4 Not used.
Always 0.
Bit 3 Enable Modem Status Interrupt (EDSSI).
This bit, when a 1, enables assertion of the HINT output whenever the Delta CTS (MSR0),
Delta DSR (MSR1), Delta TER (MSR2), or Delta DCD (MSR3) bit in the Modem Status
Register (MSR) is a 1. This bit, when a 0, disables assertion of HINT due to setting of any of
these four MSR bits.
Bit 2 Enable Receiver Line Status Interrupt (ELSI).
This bit, when a 1, enables assertion of the HINT output whenever the Overrun Error (LSR1),
Parity Error (LSR2), Framing Error (LSR3), or Break Interrupt (LSR4) receiver status bit in the
Line Status Register (LSR) changes state. This bit, when a 0, disables assertion of HINT due
to change of the receiver LSR bits 1-4.
Bit 1 Enable Transmitter Holding Register Empty Interrupt (ETBEI).
This bit, when a 1, enables assertion of the HINT output when the Transmitter Empty bit in the
Line Status Register (LSR5) is a 1.This bit, when a 0, disables assertion of HINT due to LSR5.
Bit 0 Enable Receiver Data Available Interrupt (ERBFI) and Character Timeout in FIFO Mode.
This bit, when a 1, enables assertion of the HINT output when the Receiver Data Ready bit in
the Line Status Register (LSR0) is a1 or character timeout occurs in the FIFO mode. This bit,
when a 0, disables assertion of HINT due to the LSR0 or character timeout.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 54
FCR – FIFO Control Register
(Addr = 2, Write Only)
The FCR is a write-only register used to enable FIFO mode, clear the RX FIFO and TX FIFO, enable DMA
mode, and set the RX FIFO trigger level.
Bits 7-6 RX FIFO Trigger Level
FCR7 and FCR6 set the trigger level for the RX FIFO (Receiver Data Available) interrupt.
FCR7 FCR6 RX FIFO Trigger Level (Bytes)
0 0 01
0 1 04
1 0 08
1 1 14
Bits 5, 4 Not used
Bit 3 DMA Mode Select
When FIFO mode is selected (FCR0 = 1), FCR3 selects non-DMA operation (FCR3 = 0) or DMA
operation (FCR3 = 1). When FIFO mode is not selected (FCR0 = 0), this bit is not used (the
modem operates in non-DMA mode in 16450 operation).
DMA Operation in FIFO Mode
RXRDY will be asserted with the number of characters in the RX FIFO us equal to or greater
than the value in the RX FIFO Trigger Level (IIR0-IIR3 = 4h) or the received character
timeout (IIRO-IIR3 = Ch) has occurred. RXTDY will go inactive when there are no more
characters in the RX FIFO.
TXRDY will be asserted when there are one or more empty (unfilled) locations in the TX
FIFO. TXRDY will go inactive when the TX FIFO is completely full.
Non-DMA Operation in FIFO Mode
RXRDY will be asserted when there are one or more characters in the RX FIFO. RXRDY
will go inactive when there are no more characters in the RX FIFO.
TXRDY will be asserted when there are no characters in the TX FIFO. TXRDY will go
inactive when the character is loaded into the TX FIFO Buffer.
Bit 2 TX FIFO Reset
When FCR2 is a 1, all bytes in the TX FIFO are cleared. This bit is cleared automatically by the
modem.
Bit 1 RX FIFO Reset
When FCR1 is a 1, all bytes in the RX FIFO are cleared. This bit is cleared automatically by the
modem.
Bit 0 FIFO Enable
When FCR0 is a 0, 16450 mode is selected and all bits are cleared in both FIFOs. When FCR0
is a 1, FIFO mode (16550A) is selected and both FIFOs are enabled. FCR0 must be a 1 when
other bits in the FCR are written or they will not be acted upon.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 55
IIR – Interrupt Identifier Register
(Addr = 2)
The Interrupt Identifier Register (IIR) identifies the existence and type of up to five prioritized pending
interrupts. Four priority levels are set to assist interrupt processing in the host. The four levels, in order of
decreasing priority, are Highest: Receiver Line Status, 2: Receiver Data Available or Receiver Character
Timeout. 3: TX Buffer Empty, and 4: Modem Status.
When the IIR is accessed, the modem freezes all interrupts and indicates the highest priority interrupt
pending to the host. Any change occurring in interrupt conditions are not indicated until this access is
complete.
Bits 7-6 FIFO Mode
These two bits copy FCR0.
Bits 5-4 Not Used
Always 0.
Bits 3-1 Highest Priority Pending Interrupt
These three bits identify the highest priority pending interrupt (Table below). Bit 3 is
applicable only when FIFO mode is selected; otherwise, bit 3 is a 0.
Bit 0 Interrupt Pending
When this bit is a 0, an interrupt is pending; IIR bits 1-3 can be used to determine the source
of the interrupt. When this bit is a 1, an interrupt is not pending
Interrupt Sources and Reset Control Table
Interrupt Identification Register Interrupt Set and Reset Functions
Bit 3
(Note 1)
Bit 2 Bit 1 Bit 0 Priority
Level
Interrupt Type Interrupt Source Interrupt Reset
Control
0 0 0 1 — None None —
0 1 1 0 Highest Receiver Line
Status
Overrun Error (OE) (LSR1),
Parity Error (PE) (LSR2),
Framing Error (FE) (LSR3),
or Break Interrupt (BI) (LSR4)
Reading the LSR
0 1 0 0 2 Received Data
Available
Received Data Available
(LSR0)
or RX FIFO Trigger Level
(FCR6-FCR7)
Reached1
Reading the RX
Buffer or the RX
FIFO drops
below the
Trigger Level
1 1 0 0 2 Character Timeout
Indication1
The RX FIFO contains at
least 1 character and no
characters have been
removed from or input to the
RX FIFO during the last 4
character times.
Reading the RX
Buffer
0 0 1 0 3 TX Buffer Empty TX Buffer Empty Reading the IIR
or writing to the
TX Buffer
0 0 0 0 4 Modem Status Delta CTS (DCTS) (MSR0),
Delta DSR (DDST) (MSR1),
Trailing Edge Ring Indicator
(TERI) (MSR3), or Delta
DCD (DCD) (MSR4)
Reading the
MSR
Notes:
1. FIFO Mode only.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 56
LCR – Line Control Register
(Addr = 3)
The Line Control Register (LCR) specifies the format of the asynchronous data communications exchange.
Bit 7 Divisor Latch Access Bit (DLAB)
This bit must be set to a 1 to access the Divisor Latch Registers during a read or write operation.
It must be reset to a 0 to access the Receiver Buffer, the Transmitter Buffer, or the Interrupt
Enable Register.
Bit 6 Set Break
When bit 6 is a 1, the Transmit data is forced to the break condition, i.e., space (0) is sent. When
bit 6 is a 0, break is not sent. The Set Break bit acts only on the Transmit data and has no effect
on the serial in logic.
Bit 5 Stick Parity
When Parity is enabled (LCR3 = 1) and stick parity is selected (LCR5 = 1), the parity bit is
transmitted and checked by the receiver as a 0 if even parity is selected (LCR4 – 1) or a 1 if odd
parity is selected (LCR4 = 0). When the stick parity is not selected (LCR3 = 0), parity is transmit
and checked as determined by the LCR3 and LCR4 bits.
Bit 4 Even Parity Select (EPS)
When parity is enabled (LCR3 = 1) and stick parity is not selected (LCR5 = 0), the number of 1s
transmitted or checked by the receiver in the data word bits and parity bit is either even (LCR4 =
1) or odd (LCR4 = 0).
Bit 3 Enable Parity (PEN)
When bit 3 is a 1, a parity bit is generated in the serial out (transmit) data stream and checked in
the serial in (receive) data stream as determined by the LCR4 and LCR5 bits. The parity bit is
located between the last data bit and the first stop bit.
Bit 2 Number of Stop GBITS (STB)
This bit specifies the number of stop bits in each serial out character. If bit 2 is a 0, one stop bit is
generated regardless of word length. If bit 2 is a 1 and 5-bit word length is selected, one and
one-half stop bits are generated. If bit 2 is a 1 and 6-, 7-, or 8-bit word length is selected, two
stop bits are generated. The serial in logic checks the first stop bit only, regardless of the number
of stop bits selected.
Bit 1-0 Word Length Select (WLS0 and WLS1)
These two bits specify the number of bits in each serial in or serial out character. The encoding
of bits 0 and 1 is:
Bit 1 Bit 0 Word Length
0 0 5 Bits (Not supported)
0 1 6 Bits (Not supported)
1 0 7 Bits
1 1 8 Bits
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 57
MCR – Modem Control Register
(Addr = 4)
The Modem Control Register (MCR) controls the interface with modem or data set.
Bit 7-5 Not used
Always 0
Bit 4 Local Loopback
When this bit is set to a 1, the diagnostic mode is selected and the following occurs:
1. Data written to the Transmit Buffer is looped back to the Receiver Buffer.
2. The DTS (MCR0), RTS (MCR1), Out1 (MCR2), and Out2 (MCR3) modem control register
bits are internally connected to the DSR (MSR5), CTS (MSR4), RI (MSR6), and DCD
(MSR7) modem status register bits, respectively.
Bit 3 Output 2
When this bit is a 1, HINT is enabled. When this bit is a 0, HINT is in the high impedance state.
Bit 2 Output 1
This bit is used in local loopback (see MCR4).
Bit 1 Request to Send (RTS)
This bit controls the Request to Send (RTS) function. When this bit is a 1, RTS is on. When this
bit is a 0, RTS is off.
Bit 0 Data Terminal Ready (DTR)
This bit controls the Data Terminal Ready (DTR) function. When this bit is a 1, DTR is on. When
this bit is a 0, DTR is off.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 58
LSR – Line Status Register
(Addr = 5)
This 8-bit register provides status information to the host concerning data transfer
Bit 7 RX FIFO Error
In the 16450 mode, this bit is not used and is always 0.
In the FIFO mode, this bit is set if there are one or more characters in the RX FIFO with parity
error, framing error, or break indication detected. This bit is reset to a 0 when the host reads the
LSR and note of the above conditions exist in the RX FIFO.
Bit 6 Transmitter Empty (TEMT)
This bit is set to a 1 whenever the TX Buffer (THR) and equivalent of the Transmitter Shift
Register (TRS) are both empty. It is reset to a 0 whenever either the THR or the equivalent of the
TSR contains a character.
In the FIFO mode, this bit is set to a 1 whenever the TX FIFO and the equivalent of the TSR are
both empty
Bit 5 Transmitter Holding Register Empty (THRE) [TX Buffer Empty]
This bit, when set, indicates that the TX Buffer is empty and the modem can accept a new
character for transmission. In addition, this bit causes the modem to issue an interrupt to the host
when the Transmit Holding Register Empty Interrupt Enable bit (IIR1) is set to 1. The THRE bit is
set to a 1 when a character is transferred from the TX Buffer. The bit is reset to 0 when a byte is
written into the TX Buffer by the host.
In the FIFO mode, this bit is set when the TX FIFO is empty; it is cleared when at lease one byte
is in the TX FIFO.
Bit 4 Break Interrupt (BI)
This bit is set to a 1 whenever the received data input is a space (logic 0) for longer than two full
word lengths plus 3 bits. The BI is reset when the host reads the LSR.
Bit 3 Framing Error (FE)
This bit indicates that the received character did not have a valid stop bit. The FE bit is set to a 1
whenever the stop bit following the last data bit or parity bit is detected as a logic o (space). The
FE bit is reset to a 0 when the host reads the LSR.
In the FIFO mode, the error indication is associated with the particular character in the FIFO it
applies to. The FE bit set to a 1 when this character is loaded into the RX Buffer.
Bit 2 Parity Error (PE)
This bit indicates that the received data character in the RX Buffer does not have the correct
even or odd parity, as selected by the Even Parity Select bit (LCR4) and the Stick Parity bit
(LCR5). The PE bit is reset to a 0 when the host reads the LSR.
In the FIFO mode, the error indication is associated with the particular character in the FIFO it
applies to. The PE bit set to a 1 when this character is loaded into the RX Buffer.
Bit 1 Overrun Error (OE)
This bit is set to a 1 whenever received data is loaded into the RX Buffer before the host has
read the previous data from the RX Buffer. The OE is reset to a 0 when the host reads the LSR.
In the FIFO mode, if data continues to fill beyond the trigger level, an overrun condition will occur
only if the RX FIFO is full and the next character has been completely received.
Bit 0 Receiver Data Ready (DR)
This bit is set to a 1 whenever a complete incoming character has been received and transferred
into the RX Buffer. The DR bit is reset to a 0 when the host reads the RX Buffer.
In the FIFO mode, the DR bit is set when the number of received data bytes in the RX FIFO
equals or exceeds the trigger level specified in the FCR0-FCR1.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 59
MSR – Modem Status Register
(Addr = 6)
The Modem Status Register (MSR) reports current state and change information of the modem. Bits 4-7
supply current state and bits 0-3 supply change information. The change bits are set to a 1 whenever a
control input form the modem changes state from the last MSR read by the host. Bits 0-3 are reset to 0
when the host reads the MSR or upon reset.
Whenever bits 0, 1, 2, or 3 are set to a 1, a Modem Status Interrupt (IIR0-IIR3 = 0) is generated.
Bit 7 Data Carrier Detect (DCD)
This bit indicates the logic state of the DCH# (RLSD#) output. If Loopback is selected (MCR4 =
1), this bit reflects the state of the Out2 bit in the MCR (MCR3).
Bit 6 Ring Indicator (RI)
This bit indicates the logic state of the RI# output. If Loopback is selected (MCR4 = 1), this bit
reflects the state of the Out1 bit in the MCR (MCR2).
Bit 5 Data Set Ready (DSR)
This bit indicates the logic state of the DSR# output. If Loopback is selected (MCR4 = 1), this bit
reflects the state of the DTR in the MCR (MCR0).
Bit 4 Clear to Send (CTS)
This bit indicates the logic state of the CTS# output. If Loopback is selected (MCR4 = 1), this bit
reflects the state of the RTS bit in the MCR (MCR1).
Bit 3 Delta Data Carrier Detect (DDCD)
This bit is set to a 1 when the DCD bit changes state since the host last read the MSR.
Bit 2 Trailing Edge of Ring Indicator (TERI)
This bit is set to a 1 when the RI bit changes from a 1 to a 0 state since the host last read the
MSR.
Bit 1 Delta Data Set Ready (DDSR)
This bit is set to a 1 when the DSR bit has changed since the host last read the MSR.
Bit 0 Delta Clear to Send (DCTS)
This bit is set to a 1 when the CTS bit has changed since the MSR the host last read the MSR.
RBX – RX Buffer (Receiver Buffer Register)
(Addr = 0, DLAB = 0)
The RX Buffer (RBR) is a read-only register at location 0 (with DLAB = 0). Bit 0 is the least significant bit of
the data and is the first bit received.
THR – TX Buffer (Transmitter Holding Register)
(Addr = 0, DLAB = 0)
The TX Buffer (THR) is a write-only register at address 0 when DLAB = 0. Bit 0 is the least significant bit and
the first bit sent.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 60
SCR – Scratch Register
(Addr = 7)
The Scratchpad Register is a read-write register at location 7. This register is not used by the modem and
can be used by the host for temporary storage.
Divisor Registers
(Addr = 0 and 1, DLAB = 1)
The Divisor Latch LS (least significant byte) and Divisor Latch MS (most significant byte) are two read-write
registers at locations 0 and 1 when DLAB = 1, respectively.
The baud rate is selected by loading each divisor latch with the appropriate hex value.
Programmable values corresponding to the desired baud rate are listed in Table on following page.
Divisor Latch (Hex)
MS LS Divisor (Decimal) Baud Rate
06 00 1536 75
04 17 1047 110
03 00 768 150
01 80 384 300
00 C0 192 600
00 60 96 1200
00 30 48 2400
00 18 24 4800
00 0C 12 9600
00 06 6 19200
00 04 4 28800
00 03 3 38400
00 02 2 57600
00 01 1 115600
00 00 NA 230400
Programmable Baud Rates
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 61
Application Notes
Tip and Ring Interface
OEM Motherboard
Filtering and Surge Protection Options
See also Design Considerations and Recommended Components.
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 62
Microphone and Speaker
Note: Applies to the MT5656SMI only.
Microphone Input Option
Speaker Output Option 1
Speaker Output Option 2
Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 63
Recommended Parts
Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations listed
below. Other vendor products may or may not operate satisfactorily. Multi-Tech System’s recommended
vendor products only indicate that the product has been tested in controlled conditions and were found to
perform satisfactorily.
Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF
capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems.
The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.
Recommended Ferrite (SMT)
Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206
Manufacturer – Murata Erie – Part # - BLM31AJ601SN1
Recommended Ferrite (Thru-Hole)
Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT
Recommended Capacitor
Manufacturer – NOVACAP – Part # - ES2211NKES502NXT
Manufacturer – Murata Erie – Part # - GA355DR7GC221KY02L (Surface mount device)
Part # - DE0807B221K-KH (Thru-hole device)
Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS
Note: The capacitors used on T&R must have the Y2 safety rating.
Recommended Connector
Manufacturer – Stewart – Part # - SS-6446-NF-A431
Recommended Poly Switch Thermal Fuse (can be reset)
Manufacturer – RayChem – Part # - TS600-170
Note: This fuse or its equivalent is required to meet UL60950 for protection against over-voltage from power
line crosses.
Telecom
The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F
for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the
DAA circuit. This fuse is needed for FCC Part 68 compliance.
Common Mode Choke
Manufacturer – TDK – Part # - ZJYS51R5-2PT
Recommended Sidactor
Manufacturer – Teccor Electronics – Part # - P#3100SA
Manufacturer – ST Microelectronics -- Part 1 – SMP100LC-270
Recommended Transceiver
Manufacturer – Analog Devices – Part # - ADM207EAR
Dip Connector for the MT5600SMI-P92
Manufacturer – Specialty Electronics (www.connectorsolutions.com)
4-Pin 2.0mm SIP Socket (2 Each)
10-Pin 2.0mm SIP Socket (2 Each)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 64
Chapter 3
SocketModem
MT5634SMI-34
MT5634SMI-92
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 65
Chapter 3 – SocketModem
(MT5634SMI-34 & MT5634SMI-92)
Introduction
Multi-Tech’s SocketModem creates communication-ready devices by integrating data/fax/voice functionality into a
single product design. The SocketModem is a space-efficient (1" × 2.5"), embedded modem that provides V.92/56K
communication. The complete, ready-to-integrate modem dramatically reduces development time and costs for
system designers.
The MT5634SMI SocketModem is used for integrating data and fax communications:
• It is a single-port modem, which integrates the controller, DSP, and DAA in a 1" x 2.5" form factor and
communicates to a host controller via an asynchronous serial interface
• It is available with an 8-bit parallel interface
Product Ordering Information
Product Description Region
Order
this
Product
3
MT5634SMI-34 V.34 Serial Data V.34 Fax - 5 V Global
MT5634SMI-92 V.92 Serial Data V.34 Fax - 5 V Global
MT5634SMI-P-92 V.92 Parallel Data V.34 Fax - 5 V Global
MT5634SMI-ITP-92 V.92 Serial Data V.34 Fax - Industrial Temperature - 3.3 V Global
MT5634SMI-P-ITP-92 V.92 Parallel Data V.34 Fax - Industrial Temperature - 3.3 V Global
MT5634SMI-HV-92 V.92 Serial Data V.34 Fax - High Voltage Medical Device - 5 V Global
MT5634SMI-P-HV-92 V.92 Parallel Data V.34 Fax - High Voltage Medical Device - 5 V Global
Telecom Label
MT5634SMI-LS MT5634SMI – Global Regulatory Label Global
Developer Kits
MTSMI-DK SocketModem Serial Developer Kit Global
MTSMI-P-DK SocketModem Parallel Developer Kit Global
How to Read the Product Codes in the Table Above:
34 V.34/33.6K data rate
92 V.92/56K data rate
HV High Voltage Medical Device Build
ITP Industrial Temperature Build
P Parallel interface (serial is default)
LS Telecom Label
DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Developer Kit
Two SocketModem Developer Kits are available, one for serial and the other for parallel. The serial kit allows you to
plug in the SocketModem and use it as a serial modem for testing, programming, and evaluation. The parallel kit
turns the parallel module into an ISA modem. Each kit includes:
• Developer Board with an RS-232 DB-25 Connector
• Wall Power Adapter
• RJ-11 Jack
• RS-232 Cable
• Developer Kit CD
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 66
Technical Specifications
The SocketModem meets the following specifications:
Category Description
Serial or Parallel Interface See product descriptions on the first page of this chapter
Client-to-Server Data Rates Supports V.92 (All builds except MT5634SMI-34)
AGC Dynamic Range 43 dB
Client-to-Client Data Rates 33,600; 31,200; 28,800; 26,400; 24,000; 21,600; 19,200; 16,800; 14,400;
12,000; 9600; 7200; 4800; 2400; 1200; 0-300 bps
Data Compatibility V.92, V.34 enhanced, V.34, V.32bis, V.32, V.22bis, V.22; Bell 212A and
103/113, V.21 & V.23
Data Format Serial, binary, asynchronous (available with parallel interface)
Error Correction (ECM) Data Mode V.44; V.42 LAPM, MNP 2-4
Fax Mode T.30 Annex A & C
Data Compression V.42bis & MNP Class 5
Fax Compatibility V.34, V.17, V.29, V.27, & V.21 Ch. 2
Fax Classes Class 1 &1.0 – All builds
Class 2, 2.0 &2.1 – All builds except MT5634SMI-34
Fax Data Rates 33,600; 31,200; 28,800; 26,400; 24,000; 21,600; 19,200; 16,800; 14,400;
12,000; 9600; 7200; 4800; 2400; 1200; 0-300 bps
Fax Compression MH, MR, MMR (V.92 build only)
Command Buffer 60 characters
DAA Isolation
MT5634SMI-92 (all V.92 builds) 1500 Vac
MT5634SMI-HV-92 EN60601 - 3000 Vac
Dimensions 1.045" × 2.541" × 0.680" (2.7 x 6.5 x 1.8 cm)
Flow Control XON/XOFF (software), RTS/CTS (hardware)
Frequency Stability ±0.01%
Modes of Operation Fax online modes; full duplex over dial-up lines; data mode; command mode;
online command mode; V.54 test mode
Operating Voltage Standard
5 V DC ± 5%
Absolute Maximum Supply Voltage: 5.5 V DC
MT5634SMI-ITP-92 (Industrial Temperature {3.3 V} Build Option)
3.3 V DC, 180mA
Absolute Maximum Supply Voltage: 3.6 V DC
Operational Temperature
Range
Standard
0 to+70° C ambient under closed conditions; humidity range 20–90% (non-
condensing)
MT5634SMI-ITP-92 (Industrial Temperature {3.3 V} Build Option)
-40 to +85° C ambient under closed conditions; humidity range 20–90% (non-
condensing)
Power Consumption Standard
Typical: 245 mA (1.25 W @ 5 V DC)
Standby or Sleep Mode: 148 mA
Maximum: 420 mA (2.1 W @ 5.25 V DC)
MT5634SMI-ITP-92 (Industrial Temperature {3.3 V} Build Option)
Typical: 180 mA (0.59 W @ 3.3 V DC)
Standby or Sleep Mode: 88 mA
Maximum: 290 mA (1.04 W @ 3.6 V DC)
Receiver Sensitivity –43 dBm under worst-case conditions
Serial Speeds Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19,200,
38,400, 57,600, 115,200, and 230,400 bps
Storage Temperature –50 to +100° C
Transmit Level –11 dBm (varies by country setting)
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 67
Category Description
Voice Compatibility TAM (Telephone Answering Machine): S-101 AT+V commands (no CODEC
for speakers/microphone interface)
Weight 0.02 Kg. (0.04 lb.)
Cleaning No cleaning/washing due to the manufacturing process used to produce this
product.
Manufacturing Information Trade Name: SocketModem
Model Number: MT5634SMI-34 & MT5634SMI-92
Registration No: AU7USA-25814-M5-E
Ringer Equivalence: 0.3B
Modular Jack (USOC): RJ11
Approvals Safety Certifications
UL60950
cUL60950
EN60950
IEC60950
ACA TS001 / AS 3260
CCC
Safety Certifications for HV Builds
UL60601-1
EN60601-1
EMC Approvals
FCC Part 15
Canadian EMC
EN 55022
EN 55024
GB4943, GB9254
Intelligent Features Fully AT command compatible
Leased-line operation
Sleep mode
Autodial, redial
Pulse or tone dial
Dial pauses
Auto answer
Adaptive line probing
Automatic symbol and carrier frequency during start-up, retrain, and rate
renegotiations
DTMF detection
Distinctive ring
Voice record and playback
Call status display, auto-parity and data rate selections
Keyboard-controlled modem options
On-screen displays for modem option parameters
Remote configuration
DTR dialing
Phone number storage
Flash memory for firmware updates
NVRAM storage for user-defined parameters
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 68
SocketModem Configuration
Serial Configuration
The MT5634SMI SocketModem uses a 20-pin interface to provide an on-board DAA with tip and ring connections,
audio circuit for call-progress monitoring, LED driver for call status annunciation, and serial interface.
Note: The bolded, shaded pins are the active MT5634SMI pins.
Serial SocketModem Pinout
Note: Pin 6 is RX- for the SocketEthernet IP. For ISDN, Pin 6 is RX+.
Pin 7 is RX+ for the SocketEthernet IP. For ISDN, Pin 7 is RX-.
For pin descriptions, see the Universal Pinout Description on pages 10-12.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 69
Parallel Configuration
The parallel configuration is not compatible with the serial universal socket.
The MT5634SMI-P (Parallel) SocketModem uses a 22-pin interface to provide an on-board DAA with tip and ring
connections, audio circuit for call-progress monitoring, and parallel interface.
Note: The bolded, shaded pins are the active MT5634SMI-P (Parallel) pins.
Parallel SocketModem Pins
Pin Descriptions for a Parallel SocketModem Device
Pin # Signal I/O Description
1 Tip I/O
Telephone Line Interface – TIP
2 Ring I/O
Telephone Line Interface – RING
24
–
RESET I Modem Reset (with pull-up). Active low –RESET input resets the SocketModem logic and
returns AT command set to original factory defaults or to NVRAM 'stored values' . The modem
is ready to accept commands within 6.5 seconds of power-on or reset. Reset must be asserted
for a minimum of 30ms.
25 A1 I Host Bus Address Line 1
26 DGND GND
Digital Ground
27 D7 O Host Bus Data Line 7
29 D2 O Host Bus Data Line 2
30 INT O Host Bus Interrupt Line. INT output is set high when the receiver error flag, receiver data
available, transmitter holding register empty, or modem status interrupt have an active high
condition. INT is reset low upon the appropriate interrupt service or master reset operation.
31 A0 I Host Bus Address Line 0.
32 –WR I Host Bus Write. –WR is an active low, write control input. When –DS is low, –WR low allows
the host to write data or control words into a selected modem register.
33 –RD I Host Bus Read. –RD is an active low, read control input. When –DS is low, –RD low allows
the host to read status information or data from a selected modem register.
34 A2 I Host Bus Address Line 2
35 D4 O Host Bus Data Line 4
36 D5 O Host Bus Data Line 5
37 D0 O Host Bus Data Line 0
38 D1 O Host Bus Data Line 1
39 D3 O Host Bus Data Line 3
40 –DS I Host Bus Device Select. –DS input low enables the modem for read or write.
41 D6 O Host Bus Data Line 6
61 VCC PWR
+5 V or 3.3 V Supply (depends upon model).
63 AGND GND
Analog Ground. This is tied common with DGND on the SocketModem. To minimize potential
ground noise issues, connect audio circuit return to AGND.
64 SPKR O Speaker Output. SPKR is a single ended-output. It is tied to the CODEC through a series 6.8K
resistor and .1uf cap.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 70
Electrical Characteristics
3.3 V Serial – Industrial Temperature (SMI-ITP) Build Option
3.3 V DC Characteristics (TA = -40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Input High
Min 2.52 V
Input Low
Max 0.9 V
–Reset (24) Input High
Min 2.52 V
Input Low
Max 0.3 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 2.3 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance
5 pF
3.3 V Parallel – Standard (SMI) and Industrial Temperature (SMI-ITP) Build Options
MT5634SMI for Parallel MT5634SMI SocketModem devices are presented below.
3.3 V DC Characteristics (TA = –40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Digital Inputs
–DS (40)
Input High
Min 2.52 V
Input Low
Max 0.9 V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)
Input High
Min 2.52 V
Input Low
Max 0.9 V
Digital Input/Output
Output buffer can source 12 mA at 0.4 V
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6
(41), D7 (27)
Input High
Min 2.52 V
Input Low
Max 0.9 V
Digital Output
INT (30)
Output High
Min 2.3 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance 5 pF
5 V Serial – Standard (SMI) and Medical Device (SMI-HV) Build Options
5 V DC Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Input High
Min 3.675 V
Input Low
Max 1.4 V
–Reset (24) Input High
Min 3.675 V
Input Low
Max 0.3 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance
5 PF
5 V Parallel – Standard (SMI) and Medical Device (SMI-HV) Build Options
5 V DC Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DS (40)
Input High
Min. 3.675 V
Input Low
Max. 1.4 V
Digital Inputs (hysteresis input buffer)
A0 (31), A1 (25), A2 (34), –WR (32), –RD (33)
Input High
Min. 3.675 V
Input Low
Max. 1.4 V
Digital Input / Output
Output buffer can source 12 mA at 0.4 V
DO (37), D1 (38), D2 (29), D3 (39), D4 (35), D5 (36), D6
(41), D7 (27)
Input High
Min. 3.675 V
Input Low
Max. 1.4 V
Digital Output
INT (30)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance 5 pF
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 71
Timing Requirements
Timing Requirements for Parallel Write
Parameter Min Max Unit
–DS to –WR Setup (low to low) 10 - ns
A0, A1, A2 to –WR Setup (valid to low) 15 - ns
–WR Pulse Width (low to high) 40 - ns
D0–D7 to –WR Setup (valid to high) 30 - ns
–WR to –DS hold (high to high) 0 - ns
–WR to A0–A2 Hold (high to invalid) 0 - ns
–WR to D0–D7 Hold (high to invalid) 0 - ns
–WR interaccess (high to low)
Non-MIMIC Accesses
MIMIC Accesses
10
110
-
-
ns
ns
Timing Requirements for Parallel Read
Parameter Min Max Unit
–DS to –RD Setup (low to low) 10 - ns
A0, A1, A2 to –RD Setup (valid to low) 15 - ns
–RD Pulse Width (low to high) 40 - ns
–RD to –DS hold (high to high) 0 - ns
–RD to A0–A2 Hold (high to invalid) 0 - ns
–WR interaccess (high to low)
Non-MIMIC Accesses
MIMIC Accesses
10
110
-
-
ns
ns
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 72
SocketModem Parallel Interface Internal
Registers
The SocketModem parallel interface is a mimic of a 16C550A UART. It is similar to the MIMIC interface used in the
Zilog Z80189. The SocketModem mimic (MMM) takes advantage of this standard interface while replacing the serial
to parallel data transfer with a less complicated parallel to parallel data transfer.
The MMM interface controls an 8-bit parallel data transfer which is typically interrupt driven. Interrupts usually indicate
one or both of two conditions: (1) the receive (RX) FIFO has either reached a trigger level or time-out condition and
needs to be emptied and/or (2) the transmit (TX) FIFO is empty and waiting for more data from the Host. An interrupt
can also be triggered by a change in the modem status register (i.e., loss of carrier) or by the occurrence of errors in
the line status register (overrun, parity, framing, break detect).
In addition to the receive and transmit FIFOs, there are twelve other control/status registers called the MMM register
set which can be accessed through this interface.
Overview
SocketModem MIMIC (MMM) Operation
Data flow through MMM is bi-directional. Simultaneously, data can flow from the host through the transmit FIFO to the
SocketModem controller, and data can flow from SocketModem controller through the receive FIFO to the Host. In
the receive path, 8-bit data is asynchronously received (from the SocketModem controller) by the receive FIFO where
it is stored along with associated three error bits. The error bits must arrive (via a SocketModem controller I/O write to
MMM shadow line status register) prior to receiving the actual data bits. The error bits are then temporarily stored so
they may be written, with associated data bits, to the 11-bit wide RX FIFO.
After every data write, the RX FIFO write pointer is incremented. RX FIFO trigger levels, data ready signal, and time-
out counter are checked to see if a Host interrupt needs to be sent. The data ready signal will be activated and MMM
sits poised to accept another data word.
We highly recommend the host should read the MMM IIR register to determine the type of interrupt. Then it might
check bit 7 of the LSR to see if there are any errors in the data currently residing in the receive FIFO. Finally, it will
(1) alternately read a data word through the RX FIFO read pointer and the error bits via the MMM LSR until the FIFO
is empty, or (2) read successive data words (knowing there were no errors in the FIFO) until the trigger count is met.
A similar sequence occurs when data flows in the other direction (from host through transmit FIFO), except there is
no error bit manipulation/checking involved.
FIFO Operation
The 16-byte transmit and receive data FIFOs are enabled by the FIFO Control Register (FCR) bit-0. You can set
the receive trigger level via FCR bits 6/7. The receiver FIFO section includes a time-out function to ensure data is
delivered to the external host. An interrupt is generated whenever the Receive Holding Register (RHR) has not
been read following the loading of a character or the receive trigger level has been reached.
Receive (RX) FIFO
The RX FIFO can be configured to be 16 words deep and 11 bits wide. Each word in the RX FIFO consists of 8
data bits and 3 error bits. The RX block of the MMM contains read and write pointers and status flag circuitry
that need only to be presented with data (for input), reset, read/write control signals, and read/write clock signals.
The RX block of the MMM internally manages the FIFO register file and pointers, and it provides simultaneous
read/write capability (no contention problems).
The RX block of the MMM provides data (for output), FIFO full flag, FIFO empty flag, and an almost full flag
which uses an associated predefined trigger level (obtained from the MMM FCR control register) to signal when
the trigger level has been met. Four possible trigger levels may be selected by programming bits 6-7 of the FCR
control register.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 73
A typical (interrupt driven) write to the RX block is a two-step process. The MMM micro-controller must first write
the 3 error bits to a shadow MMM LSR status register. Next, the micro-controller writes the data to the RX FIFO
and during this write operation, the 3 error bits are directly loaded from the LSR shadow register into the bits 8-
10 of the selected (11 bit-wide) FIFO register. These error bits represent the parity error, framing error, and break
interrupt signals associated with each data work transmission into the receive FIFO. When the receive FIFO is
read, these error bits are loaded directly into bits 2-4 of the MMM LSR register.
A2 A1 A0 Register Name Register Description Host Access
0
0
0
0
0
0
1
1
1
1
0
0
0
1
1
1
0
0
1
1
0
0
1
0
0
1
0
1
0
1
RBR
THR
IER
IIR
FCR
LCR
MCR
LSR
MSR
SCR
Receive Buffer (RX FIFO)
Transmit Holding (TX
FIFO)
Interrupt Enable
Interrupt Identification
FIFO Control
Line Control
Modem Control
Line Status
Modem Status
Scratch pad
DLAB = 0 R only
DLAB = 0 W only
DLAB = 0 R/W
DLAB = X R only
DLAB = X W only
DLAB = X R/W
DLAB = 0 R/W
DLAB = X R only
DLAB = X R only
DLAB = 0 R/W
0
0
1
1
0
0
1
0
0
1
1
0
DLL
DLM
DLX
MCX
LSB of Divisor Latch
MSB of Divisor Latch
Divisor Latch
Status/Control
DLAB = 1 R/W
DLAB = 1 R/W
DLAB = 1 R/W
DLAB = 1 R/W
Note 1* The General Register set is accessible only when DS is a logic 0.
Note 2* The Baud Rate register set is accessible only when DS is a logic 0 and LCR bit-7 is a logic 1.
Time Out Interrupts
The interrupts are enabled by IER bits 0-3. Care must be taken when handling these interrupts. Following a reset
the transmitter interrupt is enabled, the SocketModem will issue an interrupt to indicate that transmit holding
register is empty. This interrupt must be serviced prior to continuing operations.
The LSR register provides the current singular highest priority interrupt only. A condition can exist where a higher
priority interrupt may mask the lower priority interrupt(s). Only after servicing the higher pending interrupt will the
lower priority interrupt(s) be reflected in the status register. Servicing the interrupt without investigating further
interrupt conditions can result in data errors. When two interrupt conditions have the same priority, it is important
to service these interrupts correctly.
Receive Data Ready and Receive Time Out have the same interrupt priority (when enabled by IER bit-3). The
receiver issues an interrupt after the number of characters received have reached the programmed trigger level.
In this case the MMM FIFO may hold more characters than the programmed trigger level. Following the removal
of a data byte, the user should recheck LSR bit-0 for additional characters. A Receive Time Out will not occur if
the receive FIFO is empty. The time out counter is reset at the center of each stop bit received or each time the
receive holding register (RHR) is read.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 74
Register Functional Definitions
The following table delineates the assigned bit functions for the twelve internal registers. The assigned bit functions
are more fully defined in the following paragraphs.
Internal Registers
A2 A1 A0 Register
[Default] *3
BIT-7 BIT-6 BIT-5 BIT-4 BIT-3 BIT-2 BIT-1 BIT-0
General Register Set: Note 1*
0 0 0 RBR [XX] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
0 0 0 THR [XX] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
0 0 1 IER [00] 0 0 0 0 Modem
Status
Interrupt
Receive
Line
Status
interrupt
Transmit
Holding
Register
interrupt
Receive
Holding
Register
interrupt
0 1 0 IIR [XX] FIFO
enable
FIFO
enable
0 0 Interrupt
ID
Interrupt
ID
Interrupt
ID
Interrupt
Pending
0 1 0 FCR [00] RX
Trigger
(MSB)
RX
trigger
(LSB)
Detect
change
in FCR
TX FIFO
overrun
bit
DMA
mode
select
XMIT
FIFO
reset
RCVR
FIFO reset
FIFO
enable
0 1 1 LCR [00] Divisor
latch
access
(DLAB)
Set
break
Stick
parity
Even
parity
Parity
enable
0 Word
length bit-
1
Word
length
bit-0
1 0 0 MCR [00] 0 0 0 Loop
back
INT
enable
OUT 1 -RTS -DTR
1 0 1 LSR [60] RX
FIFO
data
error
TX
empty
THR
empty
THR
Empty
Break
interrupt
Framing
error
Parity
error
Overrun
error
Receive
data
ready
1 1 0 MSR [X0] CD RI
DSR
CTS Delta
-CD
Delta
-RI
Delta
-DSR
Delta
-CTS
1 1 1 SCR [FF] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
Special Register Set: Note *2
0 0 0 DLL [00] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
0 0 1 DLM [00] Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
Note: 1* The General Register set is accessible only when DS is a logic 0.
2* The Baud Rate register set is accessible only when DS is a logic 0 and LCR bit-7 is a logic 1.
3* The value between the square brackets represents the register's initialized HEX value, X = N/A.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 75
RBR – Receive Buffer (RX FIFO)
All eight bits are used for receive channel data (host read/data in; host write/data out). The three error bits
per byte are copied into bits 2, 3, and 4 of the LSR during each host I/O read; therefore, they are available
for monitoring on a per-byte basis.
THR – Transmit Holding Register (TX FIFO)
All eight bits are used for transmit channel data (host write/data out; host read/data in).
IER – Interrupt Enable
Bits 4–7: Reserved and will always read 0.
Bits 0-3: Set by host software only and cleared by software control or host reset.
Bit 3: Enables modem status IRQ. If bits 0–3 of the MSR are set and this bit is set to 1 (enabled),
a host interrupt is generated.
Bit 2: Enables receive line status IRQ. If bits 1–4 (overrun, parity, framing, break errors) of the
LSR are set and this bit is set to a logic 1, a host interrupt is generated.
Bit 1: Enables transmit holding register IRQ. If bit 5 (transmit holding register empty) of the LSR is
set and this bit is set to a 1, a host interrupt is generated.
Bit 0: Enables received data available IRQ. If bit 0 (data ready) of the LSR is set and this bit is set
to a 1, a host interrupt is generated.
IIR – Interrupt Identification (Read Only)
Bits 6–7: (FIFO enabled bits). These bits will read a 1 if FIFO mode is enabled and the 16450 enable
bit is 0 (no force of 16450 mode).
Bits 4–5: Reserved and always read a 0.
Bits 1–3: Interrupt ID bits.
Bit 0: Interrupt pending. If logic 0 (in default mode), an interrupt is pending.
When the host accesses IIR, the contents of the register are frozen. Any new interrupts will be recorded,
but not acknowledged during the IIR access. This requires buffering bits (0–3, 6–7) during IIR reads.
Interrupt Sources and Reset Control Table
Bit 3 Bit 2 Bit 1 Priority Interrupt Source Interrupt Reset Control
0 1 1 Highest Overrun, parity, framing, error
or break detect bits set by
SocketModem Controller
Reading the LSR
0 1 0 2nd Received data trigger level
RX FIFO drops below trigger
level
1 1 0 2nd Receiver time-out with data in
RX FIFO
Read RX FIFO
0 0 1 3rd TX holding register empty Writing to TX holding
register or reading IIR when
TX holding register is source
of error
0 0 0 4th MODEM status: CTS, DSR, RI
or DCD
Reading the MSR
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 76
FCR – FIFO Control
Bits 6–7: Used to determine RX FIFO trigger levels.
Bit 5: Used to detect a change in the FCR.
Bit 4: TX FIFO overrun bit.
Bit 3: DMA mode select. If bit 3 is a 0, the 16450 mode is enabled which does only single-byte
transfers. When bit 3 is a 1, it enables a multiple byte (FIFO mode) data transfer.
Bit 2: TX FIFO reset. This will cause TX FIFO pointer logic to be reset (any data in TX FIFO will be
lost). This bit is self clearing; however, a shadow bit exists that is cleared only when read by
the host, thus allowing the host to monitor a FIFO reset.
Bit 1: RX FIFO reset. This will cause RX FIFO pointer logic to be reset (any data in RX FIFO will
be lost). This bit is self clearing; however, a shadow bit exists that is cleared only when read
by the host, thus allowing the host to monitor a FIFO reset.
Bit 0: FIFO enable. The host writes this bit to logic 1 to put the block in FIFO mode. This bit must
be a 1 when writing other bits in this register or they will not be programmed. When this bit
changes state, any data in the FIFOs or the RBR and THR registers will be lost and any
pending interrupts are cleared.
Bit 7 Bit 6 16 Deep FIFO Trigger Levels (# of bytes) Default
0 0 1
0 1 4
1 0 8
1 1 14
LCR – Line Control
Bit 7: Divisor latch access bit. This bit allows the host, access to the divisor latch. Under
normal circumstances, the bit is set to 0 (provides access to the RX and TX FIFOs at
address 0). If the bit is set to 1, access to transmitter, receiver, interrupt enable, and
modem control registers is disabled. In this case, when an access is made to address 0,
the divisor latch least (DLL) significant byte is accessed. Address 1 accesses the most
significant byte (DLM). Address 7 accesses the DLX divisor latch register. Address 4
accesses the MCX status/control register.
Bit 6: Used to denote a host-generated set break condition.
Bits 0,1,3,4,5: Used only in parity bit generation for the 7 bit data byte case. Bits 0 and 1 are used for
word length select (b0 = 0 and b1 = 1 is used for 7 bit data). Bit 3 is parity enable. Bit 4
is even parity select. Bit 5 is stick parity.
MCR – Modem Control
Bits 5–7: Reserved, and will always be 0.
Bit 4: Used for loopback. When a 1, bits 0–3 of the MCR are reflected in modem status register
(MSR) as follows: RI <= OUT1, DCD <= OUT2, DSR <= DTR, CTS <= RTS. Emulation of
loopback feature of 16550 UART must be done by the host except for the above
conditions. Also, when this bit is set, it allows for data loop back. This means the host can
write a data word to the TX and immediately read back the same data word from the RX
(in a manner similar to the 16550A).
Bit 3: Controls the signal used to 3-state the host interrupt. If 0, then an active-low L33xV output
will be set to 0, and this signal will be used to 3-state the host interrupt output pin.
Bits 0–2: Used during LOOP function.
Bit 2: OUT1.
Bit 1: Request to Send (RTS).
Bit 0: Data terminal ready (DTR).
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 77
LSR – Line Status
Bit 7: Error in RX FIFO. This bit is always set to 1 if at least one data byte in the RX FIFO has an
error. This will clear when there are no more errors in the RX FIFO.
Bit 6: Transmitter empty. This bit is the same as LSR bit 5 (THRE) in MMM
Bit 5: Transmitter holding register empty. This bit is set to 1 when either the transmitter holding
register has been read (emptied) by the micro-controller (16450 mode) or the TX FIFO is
empty (16550 mode). This bit is set to 0 when either the THR or the TX FIFO becomes not
empty in 16450 mode. In 16550 mode, it is set to 0 only after the trigger level has been met
since the last occurrence of TX FIFO empty. If the transmitter timer is enabled, a shadow bit
exists which delays the timer setting this bit to 1. When reading this bit, the micro-controller will
not see the delay. Both shadow and register bits are cleared when the host writes to the THR
or TX FIFO in 16450 mode. The trigger level must be reached to clear the bit in 16550 (FIFO)
mode.
Bits 2–4: Used for parity error, framing error, and break detect. These bits are written, indirectly, by the
micro-controller as follows: The bits are first written to the shadow bit locations when the micro-
controller write accesses the LSR. When the next character is written to the receive buffer
(RBR) or the RX FIFO, the data in the shadow bits is then copied to the RBR (16450 mode) or
RX FIFO (16550 mode). In FIFO mode, bits become available to the host when the data byte
associated with the bits is next to be read. In FIFO mode, with successive reads of the
receiver, the status bits will be set if an error occurs on any byte. Once the micro-controller
writes to the RBR or RX FIFO, the shadow bits are auto cleared. The register bits are updated
with each host read.
Bit 1: Overrun error. This bit is set if the micro-controller makes a second write to RBR before the
host reads data in the buffer (16450 mode) or with a full RX FIFO (16550 mode). No data will
be transferred to the RX FIFO under these circumstances. This bit is reset when the host
reads the LSR.
Bit 0: Data ready bit. This bit is set to 1 when received data is available, either in the RX FIFO
(16550 mode) or the RBR (16450 mode). This bit is set immediately upon the micro-controller
writing data to the RBR or FIFO if the receive timer is not enabled, but it is delayed by the timer
interval if the receive timer is enabled. For micro-controller read access, a shadow bit exists so
that the micro-controller does not see the delay that the host sees. Both bits are cleared to
logic 0 immediately upon reading all data in either RBR or RX FIFO.
MSR – Modem Status
Bits 4 through 7 of the MSR can also take on the MCR bits 0 through 3 value when in MCR loop mode (i.e.
when MCR b4 = 1). The transfer of bits in loop back has a null modem twist (i.e. MCR b0 goes to MSR b5
and MCR b1goes to MSR b4).
Bit 7: Data carrier detect (DCD) bit.
Bit 6: Ring indicator (RI) bit.
Bit 5: Data set ready (DSR) bit.
Bit 4: Clear to send (CTS) bit.
Bit 3: Delta data carrier detect pin. This bit is set to a 1 whenever the data carrier detect bit changes
state. It is reset when the host reads the modem status register.
Bit 2: Trailing edge ring indicator bit. This bit is set to 1 on the falling edge of the ring indicator bit. It
is reset when the host reads the modem status register.
Bit 1: Delta data set ready bit. This bit is set to 1 whenever the data set ready changes state. It is
reset when the host reads the modem status register.
Bit 0: Delta clear to send bit. This bit is a one whenever the clear to send bit changes state. It is reset
when the host reads the modem status register.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 78
SCR – Scratch
The host programmer uses this register for temporary data storage.
DLL – Divisor Latch (LSByte)
This register contains low-order byte for the 16-bit clock divider. It is kept to maintain register set
compatibility with the 16C550A interface. However, it is not used for clock generation since MMM does not
require the generation of a real baud clock.
DLM – Divisor Latch (MSByte)
This register contains high-order byte for the 16-bit clock divider. It is kept to maintain register set
compatibility with the 16C550A interface. However, it is not used for clock generation, since MMM does not
require the generation of a real baud clock.
Programming the Baud Rate Generator Registers DLM (MSB) and DLL (LSB) provides a user capability for
selecting the desired final baud rate. The example in the Table below shows the selectable baud rates
available when using a 1.8432 MHz external clock input.
BAUD RATE GENERATOR PROGRAMMING TABLE
Baud
Rate
16 x Clock Divisor (Decimal) DLM Value (HEX) DLL Value (HEX)
110
300
600
1200
2400
4800
9600
19.2K
38.4K
57.6K
115.2K
1047
384
192
96
48
24
12
6
3
2
1
04
01
00
00
00
00
00
00
00
00
00
17
80
C0
60
30
18
0C
06
03
02
01
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 79
Application Notes
Tip and Ring Interface
OEM Motherboard
Filtering and Surge Protection Options
Note: See Design Considerations and Recommended Components.
Chapter 3 – SocketModem (MT5634SMI-34 & MT5634SMI-92)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 80
Recommended Parts
Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations
listed below. Other vendor products may or may not operate satisfactorily. Multi-Tech System’s
recommended vendor products only indicate that the product has been tested in controlled conditions
and were found to perform satisfactorily.
Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF
capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems.
The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.
Recommended Ferrite (SMT)
Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206
Manufacturer – Murata Erie – Part # - BLM31AJ601SN1
Recommended Ferrite (Thru-Hole)
Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT
Recommended Capacitor
Manufacturer – NOVACAP – Part # - ES2211NKES502NXT
Manufacturer – Murata Erie – Part # - GA355DR7GC221KY02L (Surface mount device)
Part # - DE0807B221K-KH (Thru-hole device)
Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS
Note: The capacitors used on T&R must have the Y2 safety rating.
Recommended Connector
Manufacturer – Stewart – Part # - SS-6446-NF-A431
Recommended Poly Switch Thermal Fuse (can be reset)
Manufacturer – RayChem – Part # - TS600-170
Note: The fuse is also needed to meet UL60950 for protection against over-voltage from power line crosses.
Telecom
The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F
for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the
DAA circuit. This fuse is needed for FCC Part 68 compliance.
Common Mode Choke
Manufacturer – TDK – Part # - ZJYS51R5-2PT
Recommended Sidactor
Manufacturer – Teccor Electronics – Part # - P#3100SA
Manufacturer – ST Microelectronics -- Part 1 – SMP100LC-270
Recommended Transceiver
Manufacturer – Analog Devices – Part # - ADM207EAR
Dip Connector for the MT5600SMI-P92
Manufacturer – Specialty Electronics (www.connectorsolutions.com)
4-Pin 2.0mm SIP Socket (2 Each)
10-Pin 2.0mm SIP Socket (2 Each)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 81
Chapter 4
SocketModem
MT2456SMI-22
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 82
Chapter 4 – SocketModem
(MT2456SMI-22)
Introduction
The Multi-Tech SocketModem supports analog data modem operation with V.22bis Fast Connect, V.42bis data
compression, and V.80 synchronous access mode. The SocketModem is a space-efficient (1" × 2.5"), embedded
modem that is ready-to-integrate into your applications; therefore, dramatically reducing development time and costs
for system designers.
The MT2456SMI-22 SocketModem is a standard 64-pin modem used for integrating data communications. It is a
single-port 5 V or 3.3 V modem that integrates a modem controller, DSP, and DAA in a 1" x 2.5" form factor and
communicates to a host controller via an asynchronous serial interface.
Product Ordering Information
Product Description Region Order this
Product
3
MT2456SMI-22 V.22bis Serial Data Only – 5 V Global
MT2456SMI-L-22 V.22bis Serial Data Only – 3.3 V Global
Telecom Label
MT2456SMI-LS MT2456SMI-Global Regulatory Label Global
Developer Kit
MTSMI-DK SocketModem Serial Developer Kit Global
How to Read the Product Codes in the Table Above:
22 5 Volt Build
L22 3.3 Volt Build
LS Telecom Label
DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Developer Kit
A SocketModem Developer Kit is available for the MT2456SMI-22. It includes:
• Developer Board with an RS-232 DB-25 Connector
• Wall Power Adapter
• RJ-11 Jack
• RS-232 Cable
• Developer Kit CD
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 83
Technical Specifications
The SocketModem meets the following specifications:
Category Description
Client-to-Server Data Rates V.22 bis
Client-to-Client Data Rates 2400, 1200, 0-300 bps
Data Format Serial, asynchronous
Modem Compatibility V.22bis, V.22; Bell 212A and 103/113; ITU-T V.21 & V.23
Error Correction ITU-T V.42 (LAP-M or MNP 2–4)
Data Compression ITU-T V.42bis
Speed Conversion Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19,200,
38,400, 57,600, and 115,200
Modes of Operation Full duplex over dial-up lines; data mode, command mode, and online command
mode
Flow Control XON/XOFF (software), RTS/CTS (hardware)
Command Buffer 50 characters
Transmit Level –12 dBm (varies by country setting)
Frequency Stability ±0.01%
Receiver Sensitivity –43 dBm under worst-case conditions
Interface Serial ITU-T V.24 logical interface
Diagnostics Local analog loop
Weight 0.02 Kg. (0.04 lb.)
Dimensions 1.045" × 2.541" × 0.680" (2.7 x 6.5 x 1.8 cm)
Power Consumption 3.3 Volt: Typical: 60 mA (.235 W @ 3.3 V DC);
Maximum: 70 mA (.264 W @ 3.6 V DC)
5 Volt: Typical: 60 mA ( .300 W @ 5 V DC);
Maximum: 70 mA
Operating Voltage Typical: 3.3 V DC ± 5%; Absolute Maximum Supply Voltage: 3.6 V DC
Typical: 5 V DC ± 5%; Absolute Maximum Supply Voltage: 5.5 V DC
Operational Temperature 0 to +70° C ambient under closed conditions; humidity range 20% to 90% (non-
condensing)
Storage Temperature -10° to +85° C
Manufacturing Information Trade Name: SocketModem
Model Number: MT2456SMI-22 & MT2456SMI-22L
Registration No: US: AU7MD04B2456
Ringer Equivalence: 0.4B
Modular Jack (USOC): RJ11 or RJ11W (Single Line)
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 84
Category Description
Approvals Safety Certifications
UL60950
cUL60950
EN60950
IEC60950
ACA TS001 / AS 3260
CCC
EMC Approvals
FCC Part 15 (Class B)
Canadian EMC (Class B)
EN 55022 (Class B)
EN 55024
Intelligent Features TIA-602 AT command compatible
V.22bis fast connect
Supports V.80
Supports Fast POS 9600
Line polarity reversal detection
Line current loss detection
Line-in-use detection during on-hook operation
Extension pickup detection
Call waiting detection
Caller ID (US configuration only)
Autodial, redial
Pulse or tone dial
Auto answer
Call status display
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 85
SocketModem Configuration
Serial Configuration
The MT2456SMI-22 SocketModem with a serial interface use a 16-pin interface to provide an on-board DAA with tip
and ring connections, audio circuit for call-progress monitoring and serial interface via logic level signals.
Note: The bolded, shaded pins are active MT2456SMI-22 pins.
Serial SocketModem Pinout
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 86
Electrical Characteristics
3.3 V and 5 V Serial SocketModem
3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
5 V DC Characteristics (TA = 0°C to 50°C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Inputs Input High Input Low
–DTR (40), –TXD (35), –RTS (33), –RESET (24) Min 2.0 V Max 0.8 V
Outputs Output High Output Low
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
2mA, Z INT = 120 Ω
Min 2.4 V Max 0.4 V
Digital Input Capacitance
50pF
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 87
Applications Notes
Tip and Ring Interface
OEM Motherboard
Filtering and Surge Protection Options
Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 88
Recommended Parts
Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations listed below.
Other vendor products may or may not operate satisfactorily. Multi-Tech System’s recommended vendor
products only indicate that the product has been tested in controlled conditions and were found to perform
satisfactorily.
Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF
capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems.
The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.
Recommended Ferrite (SMT)
Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206
Manufacturer – Murata Erie – Part # - BLM31AJ601SN1
Recommended Ferrite (Thru-Hole)
Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT
Recommended Capacitor
Manufacturer – NOVACAP – Part # - ES2211NKES502NXT
Manufacturer – Murata Erie – Part # - GA355DR7GC221KY02L (Surface mount device)
Part # - DE0807B221K-KH (Thru-hole device)
Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS
Note: The capacitors used on T&R must have the Y2 safety rating.
Recommended Connector
Manufacturer – Stewart – Part # - SS-6446-NF-A431
Recommended Poly Switch Thermal Fuse (can be reset)
Manufacturer – RayChem – Part # - TS600-170
Note: The fuse is also needed to meet UL60950 for protection against over-voltage from power line crosses.
Telecom
The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F
for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the
DAA circuit. This fuse is needed for FCC Part 68 compliance.
Common Mode Choke
Manufacturer – TDK – Part # - ZJYS51R5-2PT
Recommended Sidactor
Manufacturer – Teccor Electronics – Part # - P#3100SA
Manufacturer – ST Microelectronics -- Part 1 – SMP100LC-270
Recommended Transceiver
Manufacturer – Analog Devices – Part # - ADM207EAR
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 89
Chapter 5
SocketModem IP
MT2456SMI-IP
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 90
Chapter 5 – SocketModem IP
(MT2456SMI-IP)
Introduction
The Multi-Tech SocketModem IP integrates dial-up PSTN modem functionality and a complete TCP/IP protocol stack
into a single product design.
The SocketModem IP is a complete ready-to-integrate module that embeds Internet protocols inside your product
device allowing it to send and receive data over the Internet without connecting to a PC or gateway server.
The space efficient (1” x 2.5”) embedded modem of the SocketModem IP sends and receives data via e-mail, HTTP,
or socket interfaces.
The SocketModem IP has successfully completed international compliance testing (homologation) for global
approval. This means you can specify one module for each system used across the world. And, since the
SocketModem IP is a host independent device, the associated telecom approvals are portable across any solution for
which it is integrated.
Product Ordering Information
Product Description Region Order this
Product
3
MT2456SMI-IP-L22 V.22bis/2400 SocketModem and IP – 3.3 V Global
MT2456SMI-IP-L32 V.32bis/14.4K SocketModem and IP – 3.3 V Global
MT2456SMI-IP-L34 V.34/33.6K SocketModem and IP – 3.3 V Global
MT2456SMI-IP-L92 V.92/56K SocketModem and IP – 3.3 V Global
Telecom Label
MT2456SMI-LS MT2456SMI-Global Regulatory Label Global
Developer Kit
MTSMI-DK SocketModem Serial Developer Kit Global
How to Read the Product Codes in the Table Above:
IP TCP/IP Protocol Stack
L 3.3 Volt
LS Telecom Label
DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Developer Kit
The SocketModem IP Developer Kit allows you to plug in the SocketModem IP and use it externally connected to
your PC for testing, programming and evaluation.
The kit includes:
• Developer Board
• Universal Power Supply
• RS-232 Cable
• Developer Kit CD
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 91
Technical Specifications
Category Description
Data Format Serial, asynchronous
Flash Memory 2 MEG
Client-to-Client Data
Rates
33,600, 31,200, 28,800, 26,400, 24,000, 21,600, 19,200, 16,800 bps
14,400, 12,000, 9600, 7200, 4800 bps
2400, 1200, 0-300 bps
Data V.92; V.34, V.32, V.32bis, V.22
Error Correction V.42 (LAP-M or MNP 2–4)
Data Compression V.44, V.42bis
Modes of Operation Full duplex over dial-up lines; data mode, command mode, online command mode
Command Buffer 50 characters
Diagnostics Local analog loop
Weight 0.001 kg. (0.04 lb.)
Dimensions 1.045" x 2.541" x 0.680" (2.7 x 6.5 x 1.8 cm)
Power Consumption V.22bis:
Typical: .135 mA (.445 W @ 3.3 V DC); Maximum: 195 mA (.702 W @ 3.6V DC)
V.92, V.34, V.32:
Typical: 165 mA (.545W @ 3.3 V DC); Maximum: 225 mA (.780 W @ 3.47 V DC)
Operating Voltage Typical: 3.3 V DC ± 10%; Absolute Maximum Supply Voltage: 3.6 V DC
Operational
Temperature
0° C to +70° C ambient under closed conditions; humidity range 20% to 90% (non-
condensing)
Storage Temperature -10 to +85° C
Manufacturing
Information
Trade Name: SocketModem IP
Model Number: MT2456SMI-IP
Registration No: US:AU7MD0432456
Ringer Equivalence: 0.4B
Modular Jack (USOC): RJ11
Approvals Safety Certifications
UL60950
cUL60950
EN60950
IEC60950
ACA TS001 / AS 3260
CCC
EMC Approvals
FCC Part 15 (Class B)
Canadian (Class B)
EN 55022 (Class B)
EN 55024
GB4943, GB9254
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 92
Category Description
Telephony/TAM TAM (Telephone Answering Machine)
In modem (transparent) mode
V.253 commands: V.253
2-bit and 4-bit ADPCM, 8-bit linear PCM, and 4-bit IMA coding
8 kHz sample rate
Concurrent DTMF, ring, and Caller ID detection
Intelligent Features
AT command compatible in modem (transparent) mode
autodial, redial
pulse or tone dial
dial pauses
auto answer
adaptive line probing
automatic symbol and carrier frequency during start-up, retrain, and rate
renegotiations
DTMF detection
call status display
auto-parity and data rate selections
Speaker interface for user-supplied call progress monitoring
Caller ID (US configuration only)
Serial interface supports DTE speeds to 230K bps
Space efficient (1” x 2.5”) universal socket connectivity
Internet processor runs DNS, Dial in PPP, LCP, HTTP, ICMP,IP, LCP, IPCP, LCP,
POP3, PPP, SMTP, SNMP, SNTP, TCP, Telnet and TFTP protocols
Binary Base 64 encoding and MIME email formats
PAP, CHAP, and script authentication
CCP Compression
Web Server supports 64K of HTML web pages
HTTP version 1.0 and 1.1 support
Complete data modem solution, including controller, data pump, & DAA
Modem mode bypasses the IP features
AT command compatibility in modem (transparent) mode for modem configuration
Command Line API for Internet configuration
Flash memory to update firmware with the latest enhancements
Dial-in PPP using remote dial-up networking
Software Features
Internet Applications
Telnet Server & Telnet Client
Terminal Server
TFTP Server
Command line configuration/management via serial interface
User name and password authentication using local database
PPP
HTTP Server
SMTP Client
POP3 Client
FTP Client
SNTP Client
DDNS
Other
Flash Upgrade
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 93
SocketModem Configuration
Serial Configuration
The SocketModem IP use a 16-pin interface to provide an on-board DAA with tip and ring connections, audio circuit
for call-progress monitoring and serial interface via logic level signals.
Note: 5 Volt Tolerant Signal Inputs are –DTR –TXD, –RTS and –RESET.
Drawing Note: The bolded, shaded pins are the active SocketModem IP pins.
SocketModem IP Pinout
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 94
Electrical Characteristics
3.3 V Serial
3.3 V DC Characteristics (TA = -40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33)
Note: These digital inputs are 5 volt tolerant
Input High
Min 2.52 V
Input Low
Max 0.8 V
Digital Inputs
–RESET (24)
Note: These digital inputs are 5 V tolerant
Input High
Min. 2.52 V
Input Low
Max. 0.3 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 2.3 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance 5 pF
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 95
Application Notes
Tip and Ring Interface
OEM Motherboard
Filtering and Surge Protection
See Design Considerations and Recommended Components
Chapter 5 – SocketModem IP (MT2456SMI-IP)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 96
Recommended Parts
Disclaimer: Multi-Tech Systems makes no warranty claims for vendor product recommendations
listed below. Other vendor products may or may not operate satisfactorily. Multi-Tech System’s
recommended vendor products only indicate that the product has been tested in controlled conditions
and were found to perform satisfactorily.
Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF
capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems.
The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.
Recommended Ferrite (SMT)
Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206
Manufacturer – Murata Erie – Part # - BLM31AJ601SN1
Recommended Ferrite (Thru-Hole)
Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT
Recommended Capacitor
Manufacturer – NOVACAP – Part # - ES2211NKES502NXT
Manufacturer – Murata Erie – Part # - GA355DR7GC221KY02L (Surface mount device)
Part # - DE0807B221K-KH (Thru-hole device)
Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS
Note: The capacitors used on T&R must have the Y2 safety rating.
Recommended Connector
Manufacturer – Stewart – Part # - SS-6446-NF-A431
Recommended Poly Switch Thermal Fuse (can be reset)
Manufacturer – RayChem – Part # - TS600-170
Note: The fuse is also needed to meet UL60950 for protection against over-voltage from power line crosses.
Telecom
The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F
for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the
DAA circuit. This fuse is needed for FCC Part 68 compliance.
Common Mode Choke
Manufacturer – TDK – Part # - ZJYS51R5-2PT
Recommended Sidactor
Manufacturer – Teccor Electronics – Part # - P#3100SA
Manufacturer – ST Microelectronics -- Part 1 – SMP100LC-270
Recommended Transceiver
Manufacturer – Analog Devices – Part # - ADM207EAR
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 97
Chapter 6
SocketEthernet IP
MTXCSEM
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 98
Chapter 6 – SocketEthernet IP
(MTXCSEM)
Introduction
The Multi-Tech SocketEthernet IP is a complete, ready to integrate serial-to-Ethernet module for connecting legacy
devices to an IP network for remote monitoring, control and configuration. The space efficient module (1” x 2.5”)
provides a high performance Ethernet bridge as well as a complete TCP/IP protocol stack into a single, universal
socket design. The SocketEthernet IP can make your existing and next generation device, machine, or system, IP-
ready while you focus on developing its core features.
Product Ordering Information
Product Description Region Order this Product
3
MTXCSEM Serial to Ethernet + IP - 5 V Global
MTXCSEM-L Serial to Ethernet + IP - 3.3 V Global
Developer Kit
MTSEM-DK SocketEthernet IP Developer Kit Global
How to Read the Product Codes in the Table Above:
IP TCP/IP Protocol Stack
L 3.3 Volt
DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Developer Kit
The SocketEthernet IP Developer Kit allows you to plug in the SocketEthernet IP and use it externally connected to
your PC for testing, programming and evaluation.
The kit includes:
• Developer Board
• Universal Power Supply
• RS-232 Cable
• Developer Kit CD
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 99
Technical Specifications
Category Description
Processor 150 MHz, ARM 9
Memory 8 MEG byte
Flash Memory 2 MEG byte
Board Dimensions 1.045” w x 2.541” h x 0.680” d; 0.6 oz.
(2.65cm x 6.45cm x 1.7cm; 0.017 kg.)
Weight 0.602 lb. (0.017 kg.)
Protocols Supported ARP, DHCP client, ICMP, IP, UDP, TCP, Telnet, TFTP, HTTP server, SMTP client,
POP3 client, FTP client, SNTP client, SNMPv1 Agent, AG server support for
discovery and status, PPP, and PPP compression
LAN Interface 10/100BaseT Ethernet
Ethernet Interface IEEE 802.3
Serial Interface Standard DCE Serial
Data Formats Serial, binary, asynchronous
Data Rates 300; 1200; 2400; 4800; 9600; 19200; 38400; 57600; 115200; 230400 bps
Flow Control RTS/CTS (hardware)
Management Serial; Telnet
Security Username and password authentication using local database
System Software Flash ROM standard: downloadable from a TCP/IP host (TFTP) or Xmodem via
Serial port
LEDs Speed, Collision, Link, Activity, Duplex
Power Usage Power Consumption @ 3.3 V
Ethernet @ 10mbps Typical – 230 mA
Maximum – 270 mA
Ethernet @ 100mbps Typical – 260 mA
Maximum – 300 mA
Power Consumption @ 5 V
Ethernet @ 10mbps Typical – 240 mA
Maximum – 280 mA
Ethernet @ 100mbps Typical – 270 mA
Maximum – 310 mA
Operating
Temperature
0 to +70C; humidity range 20-90% (non-condensing)
Storage Temperature -40C to +85C
Cleaning No cleaning/washing due to the manufacturing process used to produce this product
Manufacturing
Information
Trade Name: SocketEthernet IP
Model Number: MTXCSEM
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 100
Category Description
Approvals Safety Certifications
UL60950
EN60950
IEC60950
ACA TS001 / AS 3260
Safety Certifications for High Voltage Build
UL60601-1
EN60601-1
EMC Approvals
FCC Part 15
Canadian EMC
EN 55022
EN 55024
Intelligent Features Serial interface supports DTE speeds to 230K bps
High performance 10/100BaseT Ethernet bridge
High performance processor runs ARP, DHCP client, ICMP, IP, PPP, TCP, Telnet,
TFTP, HTTP server, SMTP client, POP3 client, and PPP compression.
LED driver outputs for visual monitoring speed, link, activity, collision and duplex
mode
Half duplex or full duplex support on the LAN interface
256 frame buffer for Ethernet bridging
Stores 10,000 MAC addresses
Automatically learns MAC addresses
Command line interface
Central site setup and control of the remote modules
Flash memory to update firmware with the latest enhancements
Developer Kit available for testing, programming and evaluation
Software Features Internet Applications
DHCP Client
Telnet Server & Telnet Client
Terminal Server
PPP
UDP Server and UDP Client
HTTP Server
SMTP Client
POP3 Client
FTP Client
SNTP Client
SNMP Agent
RAW UDP/TCP Socket Support via Serial
Modem Emulation
MII Tool
Discovery Support and Remote Port Capture Using WinMCSI Port Redirector
Command line configuration/management via Serial or Ethernet
Username and password authentication using local database
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 101
SocketModem Configuration
Serial Configuration
The SocketEthernet IP uses a 23-pin interface to provide an on-board Ethernet media access controller, an Ethernet
physical layer (without the RJ-45 jack), an LED driver for Ethernet monitoring, and a serial interface.
Note: The shaded, bolded pins are SocketEthernet IP active pins.
SocketEthernet IP Pinout
Note: Pin 6 is RX- for the SocketEthernet IP. For ISDN, Pin 6 is RX+.
Pin 7 is RX+ for the SocketEthernet IP. For ISDN, Pin 7 is RX-.
For pin descriptions, see the Universal Pinout Description on pages 10-12.
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 102
Electrical Characteristics
3.3 V Serial
3.3 V DC Characteristics (TA = -40 °C to 85 °C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Note: These digital inputs are 5 volt tolerant
Input High
Min 2.52 V
Input Low
Max 0.8 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36),
–RXD (34)
Output High
Min. 2.3 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance
5 pF
5 V Serial
5 V DC Characteristics (TA = 0 °C to 50 °C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 2.52 V
Input Low
Max .0.8 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36),
–RXD (34)
Output High
Min. 2.3 V
Output Low
Max 0.4 V
Current Drive
2 mA
Digital Input Capacitance
5 pF
Chapter 6 – SocketEthernet IP (MTXCSEM)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 103
Application Notes
Ethernet Interface – Non-Isolated Design
Note: VREF stands for Power in this drawing.
Ethernet Interface – Isolated Design
Isolated Design Application Note
The MTXCSEM – HV was designed to meet Basic Isolation at 240Vac according to the international
medical directive for safety (EN60601-1). The recommended components for an isolated design comply
with the same standard.
Recommended Parts
Recommended Safety Rated Capacitors: The recommended capacitors are Y2 rated and meet supplementary
isolation at 240Vac along with the required creepages and clearances.
Manufacture – NOVACAP
Part Number – ES2211N(value)K502NXT
Recommended Resistor: The resistors are 75 ohms 1/8 watt.
Recommended Ethernet Modular Jack: The recommended jack is an eight contact, eight position, unshielded
and ungrounded connector that will maintain the need isolation and spacing requirements. A shielded and
grounded connector may be used, but special consideration must be made for the isolation and spacing
requirements.
Manufacture – Stewart Connector Systems
Part Number – SS-6488-NF-K1
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 104
Chapter 7
SocketModem ISDN
MT128SMI
Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 105
Chapter 7 – SocketModem ISDN
(MT128SMI)
Introduction
The Multi-Tech SocketModem ISDN creates communication-ready devices by integrating BRI ISDN functionality and
S/T interface into a single, universal socket design. The space-efficient (1” x 2.5”) embedded modem provides bi-
directional communication bandwidth of up to 128K bps. This complete, ready-to-integrate modem dramatically
reduces development time and costs for system designers.
Product Ordering Information
Product Description Region Order this
Product
3
MT128SMI 64/128K ISDN BRI S/T Interface – 5 V Euro/ROW
MT128SMI-L 64/128K ISDN BRI S/T Interface – 3.3 V Euro/ROW
Developer Kit
MTSMI-IDK SocketModem ISDN Developer Kit 100-240 V Global
How to Read the Product Codes in the Table Above:
L 3.3 Volt
DK Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.
RoHs ordering part number includes an .R2 or greater.
Developer Kit
The SocketModem ISDN Developer Kit provides the ability to plug in the ISDN module and use it for testing,
programming and evaluation. The kit includes:
• Developer Board with RS-232 DB-25 Connector
• Wall Power Adapter
• RJ-45 Jack
• RS-232 Cable
• Developer Kit CD
Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 106
Technical Specifications
Category Description
ISDN Interface Service: 2B+D Interface (BRI)
Interface: Four-wire S/T-type interface
Rate: 64K bps/1 B-channel; 128K bps/2-channel; 16K bps/D-channel (for
signaling) Sync or async (sync on one B-channel)
ISDN Switch Types U.S. National ISDN-1, AT&T 5ESS Custom, Northern Telecom DMS-100 Custom,
ETSI/DSS1/NET3 (Euro ISDN), Japan NTT INS64, France VN-4
Protocols PPP, ML-PPP, MP+, V.120, X.75, raw HDLC, CLEAR (synchronous), CHAP MD5,
PAP, & Soft Bond, X.31-D (async, X.31 Case B X.25 over D-channel),
X.31-B (async, X.31 Case A X.25 over B-channel)
Command Interface AT command support
Dimensions 1.045” w x 2.541” h x .680” d (2.7 x 6.5 x 1.8cm)
Power Requirements 5 VDC or 3.3 VDC
Power Usage
Typical: 160 mW @ 3.3 V; 510 mW @ 5 V
Maximum: 182 mW @ 3.3 V; 543 mW @ 5 V
Operational
Temperature
0° to 70°C ambient under closed conditions; humidity 20 to 90% non-condensing
Storage Temperature -10° to +85° C
Manufacturing
Information
Trade Name: SocketModem ISDN
Model Number: MT128SMI
Registration No: Contact Multi-Tech for details
Modular Jack (USOC): Contact Multi-Tech for details
Ringer Equivalence: Contact Multi-Tech for details
Approvals Certifications:
CE Mark
EMC Approvals:
FCC Part 15 Class A
EN55022
EN55024
Safety:
UL60950
cUL60950
EN60950
IEC60950
ACA TS001 / AS 3260
Telecom:
TBR3
Intelligent Features Calling line identification reporting (caller ID)
Async or sync support
Command Line API for Internet configuration
AT command compatible in modem mode
Complete data modem solution, including the controller and S/T interface in one
module
Flash memory to update firmware with the latest enhancements
Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 107
SocketModem ISDN Configuration
Serial Configuration
The MT128SMI SocketModem uses a 23-pin interface.
Note: The bolded, shaded pins are the MT128SMI active pins.
SocketModem ISDN Pinout
Note: Pin 6 is RX+ for ISDN. For the SocketEthernet IP, Pin 6 is RX-.
Pin 7 is RX- for ISDN. For the SocketEthernet IP, Pin 7 is RX+.
Chapter 7 – SocketModem ISDN (MT128SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 108
Electrical Characteristics
3.3 V and 5 V Serial SocketModem ISDN
3.3 V DC Characteristics (TA = 0°C to 70°C; VDD = 3.3 V ± 0.3 V) VDDMAX = 3.6 V
5 V DC Characteristics (TA = 0°C to 50°C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Inputs Input High Input Low
–DTR (40), –TXD (35), –RTS (33) Min 2.0 V Max 0.8 V
–RESET (24) Min 2.0 V Max 0.8 V
RX+, RX- (S/T Interface Receive)
Min 90 mV Peak
Normal Mode
Min 220 mV Peak
Sleep Mode
Input Capacitance 15 pF
Outputs Output High Output Low Current Drive
–DCD (39), –CTS (38), –DSR (37)
–RI (36), –RXD (34), TCLK (11),
RCLK (12)
Min 4 V/ 2.4 V Max 0.5 V/0.5 V (5 V/3.3 V) 3.2 mA,
7.0 mA for TXD
TX+, TX- (S/T Interface Transmit) 1.17 V peak @
6 mA RL= 50 ohms
Application Notes
Safety Warning Telecom / ISDN-ST
This device is for connection to the ISDN S/T side of an ISDN NT1 device only.
Interface Connector Contact Assignments
Pole (contact) assignments for 8-pole connections (plugs and jacks; i.e., RJ-45)
Function I.430 Polarity Optional Polarity Pole Number
TE NT
3 Transmit Receive + +
4 Receive Transmit + –
5 Receive Transmit – +
6 Transmit Receive – –
ISDN Interface
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 109
Chapter 8
SocketModem GPRS
MTSMC-G
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 110
Chapter 8 – SocketModem GPRS
(MTSMC-G)
Product Description
The Multi-Tech SocketModem GPRS is a complete, ready-to-integrate, embedded wireless modem. Designed for
global use, it offers standards-based multi-band GSM/GPRS Class 10. The SocketModem GSM/GPRS is based on
industry-standard open interfaces and utilizes the same form factor as the SocketModem, SocketModem IP, or
SocketEthernet IP modules from Multi-Tech.
Notes about Activation:
• These units are shipped without network activation.
• To connect to the wireless network, you will have to establish a wireless account. Call Multi-Tech Systems,
Inc. to set up your account:
888-288-5470
• See the Wireless Activation procedures in separate documents included with the Developer Kit and
available on the Developer Kit CD.
Product Ordering Information
Product Description Region Order this
Product
3
MTSMC-G-F1 900/1800 MHz GSM/GPRS SocketModem – 5 V Europe/Asia/Africa
MTSMC-G-F2 850/1900 MHz GSM/GPRS SocketModem – 5 V North/South America
Developer Kit
MTSMC-DK SocketModem GPRS Developer Kit Global
Developer Kit
The SocketModem GPRS Developer Kit allows you to plug in the SocketModem and use it for testing, programming,
and evaluation. The kit includes:
• Developer Board with RS-232 DB-25 Connector
• Universal Power Supply
• Antenna
• RS-232 Cable
• Developer Kit CD
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 111
Technical Specifications
The SocketModem GPRS meets the following specifications:
Category Description
Data Speed Packet data up to 85K bps
Circuit-switched data (GSM/GPRS) up to 14.4K bps transparent and non-transparent
Interface Serial interface supports DTE speeds to 115.2K
Data Compression V.42bis data compression
Fax Compatibility GSM/GPRS Class 1 and Class 2 Group 3 Fax
Dimensions 3.1” w x 1.4” h x 0.5” d
(8.0 cm x 3.5 cm x 1.2 cm)
Weight 1 oz (26 g)
Power Requirements 5 VDC; 300 mA Average, 1.3A Peak
Operating Environment -30° to +70° C
Storage Temperature -30° to +85° C
Connectors Antenna: MMCX
SIM: Standard 3V SIM receptacle (5V SIM with external level shifter)
IP Protocols Supported ARP, Dial-in PPP, DNS Resolve, FTP client, ICMP, IP, IPCP, LCP, POP 3 (receive mail),
PPP, SMTP (send mail), TCP socket, Telnet client, Telnet server, CHAP, PAP
Cleaning No cleaning/washing due to the manufacturing process used to produce this product
Manufacturing
Information
Trade Name: SocketModem GPRS
Model Number: MTSMC-G-F1 & MTSMC-G-F2
Registration No: AU792U03G23710
Approvals Safety Certifications
UL60950 cUL60950
IEC60950 EN60950
ACA TS001 / AS 3260
EMC Approvals
CE Mark FCC Part 2, 15, 22, 24
EN 55022 EN55024
Network
PTCRB
Features GPRS Class 10
Dual-band 850/1900 or 900/1800 MHz GSM/GPRS
Packet data up to 85K bps
Embedded TCP/IP stack
Circuit-switched data (GSM) up to 14.4K bps transparent and non-transparent
GSM Class 1 and Class 2 Group 3 Fax
Short Message Services (SMS) Features:
Text and PDU, Point-to-Point, Cell broadcast
MMCX antenna connector and SIM socket
Serial interface supports DTE speeds to 115.2K bps
AT command compatible
MNP 2 error correction, V.42bis data compression
Universal socket connectivity
Management Features:
Phone book management, Fixed dialing number, Real time clock,
Alarm management
Support for AMR (Adaptive Multi Rate) voice coder
Support for Cellular Text Telephone Modem
UDP and PING support in the TCP/IP stack
Large Memory SIM support to store/recall more than 127 text messages (SMS)
Large Memory SIM support to store/recall more than 127 entries per phonebook
Ability to select the ADN phonebook when FDN service is enabled
60-digits per phonebook entry (ADN, FDN, LDN)
60-digit phone numbers
Modem can dial a phone number that is not in the FDN list
Warranty Two years
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 112
Mechanical Dimensions
SocketModem GSM/GPRS Mechanical Drawing
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 113
SocketModem Configuration
Serial Configuration
The SocketModem GSM/GPRS uses a 13-pin interface.
Note: The bolded, shaded pins are the SocketModem GSM/GPRS active pins.
SocketModem Pinout
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 114
Electrical Characteristics
5 V DC Characteristics (TA = -20° C to 55° C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 3.675 V
Input Low
Max .7 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive:
2 mA
Digital Input Capacitance 5 pF
Power Consumption
Power Consumption in EGSM900 and GSM850 @25 degrees C
Conditions INOM IMAX
+5V During TX bursts @2 W 1.2 A 1.3 A
+5V Average @ 2 W 250 mA 320 mA
+5V Average @ ).5 W 180 mA 200 mA
+5V Average idle mode 15 mA 25 mA
Power Consumption in GSM1800 & 1900 MHz @25 degrees C
Conditions INOM IMAX
+5V During TX bursts @1 W 1.1 A 1.2 A
+5V Average @1 W 210 mA 235 mA
+5V Average @ 0.25 W 165 mA 185 mA
+5V Average idle mode 15 mA 25 mA
Power Consumption in EGSM/GPRS 900 MHz and GSM/GRPS 850 MHz Mode Class 10
Conditions INOM IMAX
+5V During TX bursts @ 2 W 1.2 A 1.3 A
+5V Average @ 2 W 420 mA 470 mA
+5V Average @ 0.5 W 280 mA 320 mA
+5V Average idle mode 15 mA 25 mA
Power Consumption in GSM/GRPS 1800 MHz and GSM/GRPS 1900 MHz Class 10
Conditions INOM IMAX
+5V During TX bursts @ 1 W 1.1 A peak 1.2 A peak
+5V Average @ 1 W 350 mA 400 mA
+5V Average @ 0.25 W 180 mA 210 mA
+5V Average idle mode 15 mA 25 mA
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 115
SIM Interface Electrical Characteristics
Parameter Conditions Minimum Typical Maximum Unit
SIMDATA VIH IIH = +/- 20µA 0.7xSIMVCC V
SIMDATA VIL I
IL = 1 mA 0.3xSIMVCC V
SIMRST,
SIMDATA
SIMCLK VOH
Source current
= 20µA
SIMVCC – 0.1V V
SIMRST,
SIMDATA
SIMCLK VOL
Sink current
= -200µA
0.1
SIMVCC Output Voltage ISIMVCC <= 6mA 2.70 2.80 2.85 V
SIMCLK
Rise/Fall Time
Loaded with 30pF 50 ns
SIMRST,
SIMDATA
Rise/Fall Time
Loaded with 30pF 1 µs
SIMCLK
Frequency
Loaded with 30pF 3.25 MHz
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 116
Application Notes
Flashing LED Interface
The flashing LED signal is used to indicate the working mode of the SocketModem.
LED and SocketModem Status
Signal SocketModem Status
OFF Download mode or switched OFF>
Continuously lit Switched ON (not registered on the network) ON
Flashing Switched ON (registered on the network)
SIM Interface
The internal SIM interface of the SocketModem supports 3V SIMs only.
Note: This interface is fully compliant with GSM 11.11 recommendations for SIM functionality.
Five Signals Are Available:
SIMVCC: SIM power supply.
SIMRST: reset.
SIMCLK: clock.
SIMDATA: I/O port.
SIMPRES1 SIM card detect.
RF Interface
Radio Characteristics
GSM 850 EGSM 900 GSM 1800 GSM 1900
Frequency RX 869 to 894 MHz 925 to 960 MHz 1805 to 1880 MHz 1930 to 1990 MHz
Frequency TX 824 to 849 MHz 880 to 915 MHz 1710 to 1785 MHz 1850 to 1910 MHz
RF Power Stand 2W at 12.5% duty cycle 2W at 12.5% duty cycle 1W at 12.5% duty cycle 1W at 12.5% duty cycle
Impedance 50 ohms
VSWR <2
Typical Radiated Gain 0 dBi on azimuth plane
RF Connector
The RF connector is MMCX standard type. An antenna can be directly connected through the mating
connector or using a small adapter.
RF Performances
RF performances are compliant with the ETSI recommendation 05.05 and 11.10.
The main parameters are:
Receiver Features
• EGSM Sensitivity : < -104 dBm
• GSM 1800/GSM 1900 Sensitivity : < -102 dBm
• Selectivity @ 200 kHz : > +9 dBc
• Selectivity @ 400 kHz : > +41 dBc
• Dynamic range : 62 dB
• Intermodulation : > -43 dBm
• Co-channel rejection : + 9 dBc
Transmitter Features
• Maximum output power (EGSM) : 33 dBm ± 2 dB
• Maximum output power (DCS/PCS) : 30 dBm ± 2 dB
• Minimum output power (EGSM): 5 dBm ± 5 dB
• Minimum output power (DCS/PCS): 0 dBm ± 5 dB
• H2 level : < -30 dBm
• H3 level : < -30 dBm
• Noise in 925 - 935 MHz : < -67 dBm
• Noise in 935 - 960 MHz : < -79 dBm
• Noise in 1805 - 1880 MHz : < -71 dBm
• Phase error at peak power : < 5 ° RMS
• Frequency error : ± 0.1 ppm max
Chapter 8 – SocketModem GPRS (MTSMC-G)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 117
Sources for Peripheral Devices
GSM Antenna
The integrated modem antenna connector is a MMCX connector. The MMCX connector incorporates
a 'Snap On' latching action in order to make the connection easier with an excellent RF performance.
An additional advantage is its small physical size, which is 50% of the standard MCX connector.
This type of connector is suitable for the standard ranges of flexible and semi-rigid cables. The
characteristic impedance of the MMCX coaxial connector is 50 ohm. The antenna manufacturer must
guarantee that the antenna will be working according to the radio characteristics presented in the
table below.
MMCX Plug
The SocketModem requires an MMCX plug to connect to an antenna.
MMCX Connector Example (right angle type)
Locking Power Plug
Switchcraft Power Plug 761K
A locking power plug can be ordered from:
Switchcraft
http://www.switchcraft.com
Order No: 761k
MMCX / SMA Adapter
A small MMCX / SMA adapter can be ordered from:
Amphenol
http://www.amphenol.com/
Order No: 908-31100
Antenna Cable
An optional 6” antenna cable can be ordered from Multi-Tech Systems, Inc.
6-Inch Antenna Cable – SMA Jack to MMCX Plug
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 118
Chapter 9
SocketModem CDMA
MTSMC-C
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 119
Chapter 9 – SocketModem CDMA
(MTSMC-C)
The Multi-Tech SocketModem CDMA is a complete, ready-to-integrate, embedded wireless modem. Designed for
global use, it offers standards-based multi-band CDMA200 1x performance. The SocketModem CDMA is based on
industry-standard open interfaces and utilizes Multi-Tech’s universal socket design.
Notes about Activation:
• These units are shipped without network activation.
• To connect to the wireless network, you will have to establish a wireless account. Call Multi-Tech Systems,
Inc. to set up your account:
888-288-5470.
• See the Wireless Activation procedures in a separate document included with your Developer Kit and
available on the Developer Kit CD.
Product Ordering Information
Product Description Region
Order this
Product
3
MTSMC-C-N1 800/1900 CDMA 1xRTT Generic SocketModem – 5 V Global
MTSMC-C-N2 800/1900 CDMA 1xRTT Sprint SocketModem – 5 V Global
MTSMC-C-N3 800/1900 CDMA 1xRTT Verizon SocketModem – 5 V Global
Developer Kit
MTSMC-DK SocketModem Wireless Developer Kit Global
Developer Kit
The SocketModem CDMA Developer Kit allows you to plug in the SocketModem and use it for testing,
programming, and evaluation. The kit includes:
• Developer Board with RS-232 DB-25 Connector
• Universal Power Supply
• Antenna
• RS-232 Cable
• Developer Kit CD
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 120
Technical Specifications
The SocketModem CDMA meets the following specifications:
Category Description
Data Speed Packet data up to 85K bps
Circuit-switched data up to 14.4K bps
Interface Serial interface supporting DTE speeds to 230K
Fax Compatibility CDMA Class 2.0 Group 3 Fax
Dimensions 3.1” w x 1.4” h x 0.5” d
(8.0 cm x 3.5 cm x 1.2 cm)
Weight 1.2 oz (34 g)
Power Requirements 5 VDC; 400mA Typical, 700mA Maximum
Operating Environment -30° to +70° C
Storage Temperature -30° to +85° C
Connectors Antenna: MMCX
R-UIM: Standard 3V R-UIM receptacle
For China only, 5V R-UIM with external level shifter
Cleaning No cleaning/washing due to the manufacturing process used to produce
this product
Manufacturing Information Trade Name: SocketModem CDMA
Model Number: MTSMC-C-xx
Approvals Safety Certifications
UL60950
cUL60950
IEC60950
EN60950
ACA TS001 / AS 3260
EMC Approvals
FCC Part 2, 15, 22, 24,
EN 55022
EN55024
Network
CDG 1 & 2
Features CDMA2000 1xRTT
Qualcomm® MSM6050™ chipset
CDMA IS-95A, IS-95B backwards compatibility
Dual-band 800/1900 MHz CDMA
800 MHz with R-UIM support
Packet data up to 153K bps forward and reverse
Circuit-switched data up to 14.4K bps
Class 2.0 Group 3 Fax
Short Message Services:
Mobile originated
Mobile terminated
Cell broadcast
Over the Air Activation (OTA)
OTASP
OTAPA
MMCX antenna connector
Serial interface supporting DTE speeds to 230K
AT command compatible
Universal socket connectivity
Management Features:
Phone book management
Fixed dialing number
Real time clock
Alarm management
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 121
Mechanical Dimensions
SocketModem CDMA Mechanical Drawing
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 122
SocketModem Configuration
Serial Configuration
The SocketModem CDMA uses a 13-pin interface.
Note: The bolded, shaded pins are the SocketModem CDMA active pins.
SocketModem CDMA Pinout
Electrical Characteristics
Electrical Characteristics for the 5V Serial SocketModem
5 Vdc Characteristics (TA = -20° C to 55° C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 3.675 V
Input Low
Max 0.7 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive:
2 mA
Digital Input Capacitance
5 PF
Power Consumption
Operating Mode Band Average (mA)
CDMA RXTX Cellular 615
Full Power PCS 770
Cellular 340 CMA RXTX
Average Power PCS 445
Cellular 20 CDMA Standby
PCS 20
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 123
Application Notes
Flashing LED Interface
The flashing LED signal is used to indicate the working mode of the SocketModem.
LED and SocketModem Status
Signal SocketModem Status
OFF Download mode or switched OFF>
Continuously lit Switched ON (not registered on the network) ON
Flashing Switched ON (registered on the network)
RF Interface
Radio Characteristics
CDMA 800 CDMA 1900
Frequency RX 869 to 894 MHz 1930 to 1990 MHz
Frequency TX 824 to 849 MHz 1850 to 1910 MHz
Impedance 50 ohms
VSWR <2
Typical Radiated Gain 0 dBi in at least one direction
RF Connector
The RF connector is MMCX standard type. An antenna can be directly connected through the mating
connector or using a small adapter.
Chapter 9 – SocketModem CDMA (MTSMC-C)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 124
Sources for Peripheral Devices
CDMA Antenna
The integrated modem antenna connector is a MMCX connector. The MMCX connector incorporates
a 'Snap On' latching action in order to make the connection easier with an excellent RF performance.
An additional advantage is its small physical size, which is 50% of the standard MCX connector.
This type of connector is suitable for the standard ranges of flexible and semi-rigid cables. The
characteristic impedance of the MMCX coaxial connector is 50 ohm. The antenna manufacturer must
guarantee that the antenna will be working according to the radio characteristics presented in the
table below.
MMCX Plug
The SocketModem requires an MMCX plug to connect to an antenna.
MMCX Connector Example (right angle type)
Locking Power Plug
Switchcraft Power Plug 761K
A locking power plug can be ordered from:
Switchcraft
http://www.switchcraft.com
Order No: 761k
MMCX / SMA Adapter
A small MMCX / SMA adapter can be ordered from:
Amphenol
http://www.amphenol.com
Order No: 908-31100
Antenna Cable
An optional 6” antenna cable can be ordered from Multi-Tech Systems, Inc.
6-Inch Antenna Cable – SMA Jack to MMCX Plug
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 125
Chapter 10
SocketWireless Bluetooth
MTS2BTSMI
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 126
Chapter 10 – SocketWireless
Bluetooth (MTS2BTSMI)
Introduction
The Multi-Tech Systems, Inc. SocketWireless with Bluetooth-enabled technology allows developers to establish
wireless networks using a special set of AT commands and a developer board. The SocketWireless with Bluetooth
technology makes the cable-replacement transition to wireless networks seamless and easy.
This chapter explains how to establish Bluetooth communication between two serial devices for data applications in a
point-to-point network. Bluetooth-enabled devices create communication-ready devices by integrating data
functionality into a single, universal socket design. This complete, ready-to-integrate device dramatically reduces
development time and costs for system designers.
Origin of the Term “Bluetooth”
An initial effort to standardize wireless transmission between a variety of devices such as
PCs, cordless telephones, headsets, printers, and PDAs was in the form of a consortium
(April, 1998) of Intel, Microsoft, IBM, Toshiba, Nokia, Ericcson, and Puma technology. The
project was code-named Bluetooth after Harald Blaatand (Bluetooth), the 10th century Danish
king who unified Denmark and Norway. — from Newton’s Telecom Dictionary, 20th Edition
Notes about Byte Gaps and Data Latency
Because of the way Bluetooth is designed and operates, random byte gaps of 5 ms to 20 ms are common.
Packet size will vary from transmission to transmission.
Although the serial bandwidth operates up to 920K, effective data throughput in fast streaming mode is
approximately 200Kbp. Effective data throughput in regular data mode is 60Kbps. The reason for the slower
speed in regular mode is due to the AT parser, which looks at each character for ASCII valid command scripts in
the regular mode's data stream.
The SocketWireless RX has very limited buffering, so if you do not use hardware flow control and are
transmitting further distances, you will quickly overflow the 50 byte buffer because of RF retransmissions, etc.
When a Bluetooth connection is made, the SocketWireless device goes into regular data mode per the power-up
factory default settings. This enables the user to remotely configure the SocketWireless settings via a remote RF
Bluetooth connection. Basically, you can setup the SocketWireless device so no commands are required to be
sent from the embedded side of the device. This allows seamless interfacing with legacy systems without the
need to modify the host device
Product Ordering Information
Product Description Region Order this
Product
3
MTS2BTSMI Serial-to-Bluetooth Module, C1 V1.2 – 5V (50 Pack) Global
MTS2BTSMI-L Serial-to-Bluetooth Module, C1 V1.2 – 3.3V (50 Pack) Global
Developer Kit
MTBTSMI-DK SocketWireless Bluetooth Developer Kit Global
Note: Each module is available as a single pack as well as the 50 pack listed above – Product Number MTSMI-UDK.
Developer Kit
The SocketWireless Bluetooth Developer Kit provides the ability to plug in the module and use it for testing,
programming and evaluation. The kit includes:
• Developer Board with RS-232 DB-25 Connector
• Wall Power Adapter
• Antenna
• RS-232 Cable
• Developer Kit CD
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 127
Technical Specifications
Category Description
Serial Interface Supports speeds from 1200bps to 920Kbps
RF Interface Frequency………………2402 – 2480MHz
Modulation……………...FHSS/GFSK
Channel Intervals………1MHz
Number of Channels….79CH
Transmission Rate…….721Kbps
Data Format For Serial Interface - Asynchronous, 8-N-1, Default is 9600bps
Flow Control Hardware
RF Receive Sensitivity -80dBm typical
Output Level (Class 1) 20dBm maximum
RF Range Class 1 - 100 meters (330 feet)
Modes of Operation Inquiry, Idle, Data, Fast Data, Park, Sniff, Command, Master, Slave
Device Profiles Serial Port (SPP), Dial-up Network (DUN)
Buffer Serial 50 bytes
RF 50-byte RX buffer
Weight 0.6 oz. (0.017 Kg.)
Dimensions 1.045" x 2.541" x 0.680" (2.65cm x 6.45cm x 1.7cm)
Power Idle: 2mA (0.0066W @ 3.3Vdc) (0.01W @ 5Vdc)
Connected: 7mA (0.0231W @ 3.3Vdc) (0.035W @ 5Vdc)
Fast Data: 45mA (0.1485W @ 3.3Vdc) (0.225W @ 5Vdc)
Inquiry: 70mA (0.231W @ 3.3Vdc) (0.35W @ 5Vdc)
Notes: These power measurements were taken with no LEDs connected.
Driving an LED through 330 ohm resistor to GND draws an additional
4mA on 5V for each LED.
Operational Temp. -40 to +70° C
Storage Temperature -40 to +85° C
Voltage 3.3Vdc or 5Vdc
Power Consumption 3.3V +/- Vmax = 3.6 volts
5V +/- Vmax = 5.25 volts
Default Power Up
Settings
AT Command Response Form = Long Form
Bluetooth Service Profile = Serial Port Profile {SPP}
Device Role = Slave
Baud Rate = 9600bps
Data Bits = 8 bits
Parity = None
Stop bits = 1 bit
Hardware Flow Control RTS/CTS = Enabled
Power Mode = Never go into deep sleep mode
Country Code = North America and Europe
Name of Device (local name) = SocketWireless
My Radio Status = 1,0 {slave, disconnected}
Service Name = COM0
Power up default ATSW24 settings = 0,0,0,0 {long response, no authentication, no
auto SCO connect, no minor}
Power up default ATSW25 settings = 0,1,0,0 {slave, data, allow data to pass, SPP}
Major & Minor Class Of Device (COD) = 00000000 {undefined}
Security PIN and Encryption Disabled
Default PIN = “default” caps sensitive
Page Scan Interval = 0x400 {2560msec.}
Page Scan Window = 0x200 {11msec.}
Inquiry Scan Interval = 0x400 {2560msec.}
Inquiry Scan Window = 0x200 {11msec.}
Timeout Connection Parameters
Inquiry = 60 seconds
Slave Connect = 60 seconds
Master Connect = 60 seconds
ATDM idle mode = 60 seconds
ATDM Master Mode = indefinitely (need to perform ATUCL to cancel last
command)
Timeout for loss of Bluetooth connection = 4 seconds
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 128
Category Description
Intelligent Features Can be configured, commanded, and controlled through simple ASCII strings over
the Bluetooth RF link or directly through the hardware serial UART.
Low power consumption.
Secure and robust communication link.
• FHSS (Frequent Hopping Spread Spectrum)
• 56-bit encryption, and 10 alphanumeric Personal Identification Number (PIN)
• Error correction schemes for guaranteed packet delivery
Approvals EMC Approvals:
FCC Part 15 Class B
Canada (Class B)
FCC Part 15, Subpart C
EN 300 328
EN 301 489-17
EN55022
EN55024
EN 301 489-1
Safety:
UL60950
cUL60950
EN60950
AS/NZS 60950
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 129
Mechanical Dimensions
SocketWireless Bluetooth Mechanical Drawing
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 130
SocketWireless Bluetooth Configuration
Serial Configuration
The MT2BTSMI SocketWireless uses a 17-pin interface.
Note: The bolded, shaded pins are the active SocketWireless pins.
SocketWireless Bluetooth Pinout
Electrical Characteristics
3.3 V and 5 V Serial SocketWireless
Inputs Input High Input Low
–DTR (40), –TXD (35), –RTS (33) Min 2.0 V Max 0.8 V
–RESET (24) Min 2.0 V Max 0.8 V
Input Capacitance 15 pF
Outputs Output High Output Low Current Drive
–DCD (39), –CTS (38), –DSR (37)
–RI (36), –RXD (34)
Min 4 V/ 2.4 V Max 0.5 V/0.5 V (5 V/3.3 V) 3.2 mA,
7.0 mA for TXD
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 131
Application Notes
Example of a Master Discovery/Connection Sequence
From Power Up and No Connection
1. Verify local device is Master in Data Mode.
Sent: ATSi,7 <cr_lf>
Reply: <cr_lf>1,1,0,0<cr_lf>
2. If not Master, set to Master and Data Mode.
Sent: ATSW25,1,1,0,0 <cr_lf>
Reply: <cr_lf>OK<cr_lf>
3. Perform an Inquiry to obtain BT_Addresses (unless it is already known).
Sent: ATMC <cr_lf> // Places Radio in Command Mode
Reply: <cr_lf>OK<cr_lf>
Sent: ATUCL // Clears radio state
Reply: <cr_lf>OK<cr_lf>
Sent: ATDI,1,00000000 {Class of Device}<cr_lf> // Looks for only one Bluetooth device
Reply: <cr_lf>00A0961F2023,00000104,SOCKETWIRELESS<cr_lf>DONE<cr_lf>CONNECT <cr_lf>
4. Perform a Master Connect over SPP using the BT_Address.
Sent : ATDM, 00A0961F2023,1101<cr_lf> // SPP connection
Reply:<cr_lf>CONNECT,00A0961F008F <cr_lf> // Returns Slave BT address radios is in data
mode
5. Place radio into Fast Data Mode.
Sent : ATMC <cr_lf> // Places Radio in Command Mode
Reply: <cr_lf>OK<cr_lf>
Sent : ATMF<cr_lf> // Places radio in Fast Data Mode
Reply: <cr_lf>OK<cr_lf>
6. Send Data.
Note about Sending Commands from the Slave When the Slave Connects in Fast Data Mode (ATSW25/or
issuing ATMF)
All valid AT commands sent through the Slave's UART will be interpreted and responded by the Master as if it
were the local Slave radio. Basically, in this configuration from the Slave end, you can obtain status and
configure the remote Master radio. This is a unique feature that may be useful in some applications, but it can be
confusing if you think you are talking to the Slave.
To Get Out of Data Mode and Check Status
1. Delay at least 50 milliseconds; this could be less or more.
2. Perform a Set Command Mode.
Sent : ATMC<cr_lf>
Reply: <cr_lf>OK<cr_lf>
3. Delay at least 50 milliseconds.
4. Check Status, perform a Disconnect …
Sent : AT<cr_lf>
Reply: <cr_lf>OK<cr_lf>
Note about Being Connected in Fast Data Mode
If connected in Fast Data Mode, it is necessary to reset the device to break the connection.
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 132
Example of a Slave Command Sequence
From Power Up:
1. Check and verify Communication to Slave.
Sent : AT<cr_lf>
Reply: <cr_lf>OK<cr_lf>
2. Get information on Slave Bluetooth address.
Sent : ATSi,1<cr_lf>
Reply: 12-digit address
<cr_lf>OK<cr_lf>
3. Set Slave to automatically connect in Fast Data Mode on Bluetooth connection.
Sent : ATSW25,0,0,0,0 <cr_lf>
Reply: <cr_lf>OK<cr_lf>
4. Either cycle power or send ATURST.
Note: This command sequence assumes the radio is in factory default in which it automatically comes up and
is connectable as a Slave from a Master request.
Changing Configuration
Parameters, such as the Bluetooth Name, Service Name, Class of Device, and Serial Port settings can be viewed
and configured. This can be done locally through the serial port UART or from a remote Bluetooth RF link. To
configure the SocketWireless Bluetooth device, the device must be in command mode by issuing ATMC. While in
command mode, the SocketWireless Bluetooth device will accept ASCII bytes as commands.
You can use the developer board and the RS-232 cable to connect to a PC and pass ASCII characters through the
terminal to the SocketWireless Bluetooth device. The communications settings should match the settings used when
the SocketWireless Bluetooth device connects. For example, the defaults are:
9600bps
8 bits
No Parity
1 stop bit
Hardware flow control enabled.
Once you change these parameters, you have the option to store them permanently in the non-volatile memory.
Run your favorite terminal emulator, HyperTerminal, or other program.
• Type AT on your screen and follow it with a carriage return <cr_lf>. You should see "OK" returned to
you. This will verify that your cable and communications settings are correct. When the SocketWireless
device is not connected to another Bluetooth device, you can type the AT commands directly into the
SocketWireless' UART; e.g., you do not have to type ATMC to change from data mode to command
mode.
• Now you can enter any of the AT commands discussed in the following sections. Follow these
commands by <cr_lf>. Valid commands will return an "OK" or a valid response. Invalid commands will
reply ERROR.
• To return to data mode, type ATMD. You can now pass or receive data from a remote connected
Bluetooth device.
Notes:
• If you change communications parameter settings, remember to change your terminal or emulator
communications settings to correspond to the newly created parameter settings.
• AT commands will not echo back to the terminal.
Chapter 10 – SocketWireless Bluetooth (MTS2BTSMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 133
Sources for Peripheral Devices
Antenna
Antenna Requirements
Frequency Range 2.4-2.5 Ghz
Impedance 50 ohm nominal
VSWR <2.0:1
Gain 2 dBi
Radiation Omni
Polarization Vertical
Wave Half Wave Dipole
Connector Reverse Polarity SMA Plug
Antennas that meet the requirements for use with the SocketWireless products can be ordered from the
following manufacturers:
http://www.ead-ltd.com
http://www.centurion.com
http://www.mobilemark.com
http://nearson.com Part Number: S131AH-2450S
http://woken.com
Locking Power Plug
Switchcraft Power Plug 761K
A locking power plug can be ordered from:
Switchcraft
http://www.switchcraft.com
Order No: 761k
Antenna Cable
Antenna cables go from an MMCX connector to the reverse SMA connector. The MMCX connector snaps
onto the Bluetooth socketmodem, and the antenna attaches to the verse SMA connector. Antenna cables
that meet the requirements for use with the SocketWireless products can be ordered from the following
manufacturers:
GC Protronics Cable Part Number 20903C
Samtec Cable Part Number ASP-116785-01
Note: An optional 6” antenna cable can be ordered from Multi-Tech Systems, Inc.
Chapter 11 – SocketModem EDGE
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 134
Chapter 11 – SocketModem EDGE
Product Description
The Multi-Tech SocketModem EDGE embedded wireless modem delivers some of the fastest cellular data speeds by
utilizing EDGE technology. It allows users to connect to the Internet and send and receive data up to three times
faster than possible with an ordinary GSM/GPRS network making it ideal for highly data-intensive applications. Based
on industry-standard open interfaces, the SocketModem EDGE wireless modem is equipped with quad-band GSM,
which means it can be used worldwide on all existing GSM networks. In addition, it utilizes Multi-Tech's universal
socket design.
Multi-Tech’s SocketModem EDGE Embedded Wireless Modem Builds
Product Trade Name Description Region
MTSMC-E SocketModem EDGE Quad-band EDGE Class 10 Global
MTSMC-E-V SocketModem EDGE Quad-band EDGE Class 10 w/Voice Global
AT Commands
AT commands for this product are published in a separate document available on the Developer’s Kit system CD or
from Multi-Tech. For a copy of this document, contact OEM Sales at oemsales@multitech.com or call:
(800) 972-2439.
Developer Kit
The Developer Kit allows you to plug in the module and use it for testing, programming, and evaluation. The kit
includes:
• Developer Board with RS-232 DB-25 Connector
• Universal Power Supply
• Antenna
• RS-232 Cable
• Developer Kit CD
Chapter 11 – SocketModem EDGE
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 135
Technical Specifications
The SocketModem EDGE wireless modem meets the following specifications:
Category Description
Packet Data EDGE: E-GPRS Class 10, Modulation & coding scheme MCS 1-9, Mobile station Class B
GPRS: GPRS Class 12, full PBCCH support, coding scheme 1-4, Mobile station Class B
Circuit-Switched Data Asynchronous, transparent & non-transparent up to 9600 bps
Fax Class 1 Group 3 Fax
SMS Text & PDU, Point-to-Point, cell broadcast
Connectors Antenna: MMCX
SIM: Standard 3V SIM receptacle
IP Protocols Supported TCP, UDP, DNS, FTP, SMTP, POP3, HTTP
Power Requirements 5 VDC; 400mA typical
Operating Environment -30° to +50° C
Physical Description Dimensions: 2.55” L x 1.4” W x 0.5” H (6.48 cm x 3.5 cm x .87 cm)
Weight: 1 oz. (20 g)
Certifications CE Mark
EMC: FCC Part 2, 15, 22, 24, EN 55022 & EN55024
Safety: cUL, UL 60950, EN 60950
Network: PTCRB
Warranty 2 years
Chapter 11 – SocketModem EDGE
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 136
Physical Dimensions
SocketModem EDGE Wireless Modem Mechanical Drawing
Chapter 11 – SocketModem EDGE (MTSMC-E)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 137
Pin Configurations
SocketModem EDGE Pins
EDGE Pin Descriptions
Pin # Signal
Name
In Out
Type Description
9 Dummy Dummy
22 MIC+ I Wireless
23 MIC– O Wireless
24 –Reset I Device Reset (with pull-up).
The active low –RESET input resets the device logic and returns the
configuration of the device to the original factory default values of "stored
values" in the NVRAM.
–RESET is tied to VCC through a time-constant circuit for “Power-on-Reset”
functionality. The module is ready to accept commands after a fixed amount of
time after power-on or reset.
26 GND GND Ground
33 –RTS I The –RTS signal is used for hardware flow control.
34 –RXD O Data Set Ready. The –DSR indicates modem status to the DTE. –DSR OFF
(high) indicates that the DTE is to disregard all signals appearing on the
interchange circuits except Ring Indicator (–RI). It reflects the status of the
local data set and does not indicate an actual link with any remote data
equipment.
35 –DSR O Clear To Send. –CTS is controlled by the modem to indicate whether or not
the modem is ready to transmit data. –CTS ON, indicates to the DTE that
signals presented on TXD will be transmitted. –CTS OFF indicates to the DTE
that it should not transfer data across the interface on TXD.
36 –RI /
3.3V
O RING (Active Low). Incoming ring signal from phone.
Ring Indicate. –RI output ON (low) indicates the presence of an ON segment
of a ring signal on the telephone line. The modem will not go off-hook when –
RI is active; the modem waits for –RI to go inactive before going off-hook.
38 –CTS O Clear to Send (Active Low). –CTS is controlled by the module to indicate
whether or not the module is ready to transmit data. –CTS ON indicates to the
DTE that signals on TXD will be transmitted. –CTS OFF indicates to the DTE
that it should not transfer data on TXD.
Chapter 11 – SocketModem EDGE (MTSMC-E)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 138
Pin # Signal
Name
In Out
Type Description
39 –DCD O Data Carrier Detect (Active Low). –DCD output is ON (low) when a data
connection is established and the module is ready to send/receive data.
40 –DTR
I
Data Terminal Ready (Active Low). The –DTR input is turned ON (low) when
the DTE is ready to communicate. –DTR ON prepares the modem to be
connected, and, once connected, maintains the connection. –DTR OFF places
the modem in the disconnect state under control of the &Dn and &Qn
commands.
Note: When the –DTR pin is not in use, it should be tied low.
41 GND GND Ground
42 SPK– O Speaker. Negative analog speaker output.
43 SPK+ O Speaker. Positive analog speaker output.
58 LED
LINK
O LED LINK (Active Low). LED Output. During normal operation, this pin lights
the LINK LED to indicate a good link is detected. See LED Mode Table below.
61 VCC PWR DC Input Power. 3.3 V or 5 V DC power, depending upon the build.
63 GND GND Ground
Pin 58 – LED Mode
LED Mode – Pin 58 Operating Status
Off SCME is off or run in SLEEP and Alarm modes.
600 ms ON / 600ms OFF No SIM card inserted or no PIN entered, or
network search in progress, or ongoing user
authentication, or network login in progress.
75 ms ON / 75 ms OFF / 75 ms ON
3 s OFF
Flashing
One or more GPRS contexts activated.
Indicates GPRS data transfer: When a GPRS
transfer is in progress, the LED goes on within 1
second after data packets were exchanged. Flash
duration is approximately 0.5 s.
ON Depending on type of call:
Voice Call: Connected to remote party.
Data Call: Connected to remote party or
exchange of parameters while
setting up or disconnecting a call.
Chapter 11 – SocketModem EDGE (MTSMC-E)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 139
Electrical Characteristics & Power
Consumption
I/O Electrical Characteristics
5 Vdc Characteristics (TA = -20° C to 55° C; VDD = 5 V ± 0.25 V) VDDMAX = 5.25 V
Digital Inputs
–DTR (40), –TXD (35), –RTS (33), –RESET (24)
Input High
Min 3.675 V
Input Low
Max .7 V
Digital Outputs
–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)
Output High
Min. 4 V
Output Low
Max 0.4 V
Current Drive
2 ma
Digital Input Capacitance 5 PF
Voice Mode Power Consumption
GSM Call Power Consumption in EGSM900 and GSM850 @25 degrees C
Voltage Conditions INOM IMAX
+5V During TX bursts @2W 1.2 A 2.0 A
+5V Average @ 2W 250 mA 335 mA
+5V Average @ ).5W 180 mA 200 mA
+5V Average idle mode 15 mA 25 mA
GSM Call Power Consumption in GSM1800 & 1900 MHz @25 degrees C
Voltage Conditions INOM IMAX
+5V During TX bursts @1W 1.1 A 1.2 A
+5V Average @1W 210 mA 235 mA
+5V Average @ 0.25W 165 mA 185 mA
+5V Average idle mode 15 mA 25 mA
Data Mode Power Consumption
GPRS Class 10 Power Consumption in EGSM/GPRS 900 MHz and GSM/GRPS 850 MHz
Voltage Conditions INOM IMAX
+5V During TX bursts @ 2W 1.5 A 2.0 A
+5V Average @ 2W 400 mA 610 mA
+5V Average @ 1W 280 mA 488 mA
+5V Average idle mode 15 mA 25 mA
GPRS Class 10 Power Consumption in GSM/GRPS 1800 MHz and GSM/GRPS 1900 MHz
Voltage Conditions INOM IMAX
+5V During TX bursts @ 1W 1.1 A peak 1.2 A peak
+5V Average @ 1W 350 mA 400 mA
+5V Average @ .25W 180 mA 210 mA
+5V Average idle mode 15 mA 25 mA
EGPRS Class 10 Power Consumption in EGRPS 900 MHz and EGRPS 850 MHz
Voltage Conditions INOM IMAX
+5V During TX bursts @ 5W 1.4 A peak 1.6 A peak
+5V Average @ .5W 430 mA 525 mA
+5V Average @ .25W 375 mA 450 mA
+5V Average idle mode 15 mA 25 mA
Chapter 11 – SocketModem EDGE (MTSMC-E)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 140
SIM Interface Electrical Characteristics
Parameter Conditions Min Typ Max Unit
SIMDATA VIH IIH = +/- 20µA 0.7xSIMVCC V
SIMDATA VIL IIL = 1 mA 0.3xSIMVCC V
SIMRST,
SIMDATA
SIMCLK VOH
Source current
= 20µA
SIMVCC – 0.1V V
SIMRST,
SIMDATA
SIMCLK VOL
Sink current
= -200µA
0.1
SIMVCC Output
Voltage
ISIMVCC <= 6mA 2.70 2.80 2.85 V
SIMCLK
Rise/Fall Time
Loaded with 30pF 50 ns
SIMRST,
SIMDATA
Rise/Fall Time
Loaded with 30pF 1 µs
SIMCLK Frequency Loaded with 30pF 3.25 MHz
Other Characteristics
Radio Characteristics
GSM 850 EGSM 900 GSM 1800 GSM 1900
Frequency RX 869 to 894 MHz 925 to 960 MHz 1805 to 1880 MHz 1930 to 1990 MHz
Frequency TX 824 to 849 MHz 880 to 915 MHz 1710 to 1785 MHz 1850 to 1910 MHz
RF Power Stand 2W at 12.5%
duty cycle
2W at 12.5% duty
cycle
1W at 12.5% duty
cycle
1W at 12.5% duty
cycle
Impedance 50 ohms
VSWR <2
Typical Radiated Gain 0 dBi on azimuth plane
Receiver Features
• EGSM Sensitivity : < -104 dBm
• GSM 1800/GSM 1900 Sensitivity : < -102 dBm
• Selectivity @ 200 kHz : > +9 dBc
• Selectivity @ 400 kHz : > +41 dBc
• Dynamic range : 62 dB
• Intermodulation : > -43 dBm
• Co-channel rejection : + 9 dBc
Transmitter Features
• Maximum output power (EGSM) : 33 dBm +/- 2 dB
• Maximum output power (DCS/PCS) : 30 dBm +/- 2 dB
• Minimum output power (EGSM): 5 dBm +/- 5 dB
• Minimum output power (DCS/PCS): 0 dBm +/- 5 dB
• H2 level : < -30 dBm
• H3 level : < -30 dBm
• Noise in 925 - 935 MHz : < -67 dBm
• Noise in 935 - 960 MHz : < -79 dBm
• Noise in 1805 - 1880 MHz : < -71 dBm
• Phase error at peak power : < 5 ° RMS
• Frequency error : +/- 0.1 ppm max
Speaker Output
Differential speaker output capable of driving 8 ohm load. 1.0945 Vpp (differential) typical.
Microphone Input
Balanced microphone input: full scale input 1.1 Vpp.
Chapter 11 – SocketModem EDGE (MTSMC-E)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 141
Peripheral Devices
Antenna
The integrated modem antenna connector is a MMCX connector. The MMCX connector incorporates a
'Snap On' latching action in order to make the connection easier with an excellent RF performance. An
additional advantage is its small physical size, which is 50% of the standard MCX connector.
This type of connector is suitable for the standard ranges of flexible and semi-rigid cables. The characteristic
impedance of the MMCX coaxial connector is 50 ohm. The antenna manufacturer must guarantee that the
antenna will be working according to the radio characteristics presented in the table below.
RF performances are compliant with the ETSI recommendation 05.05 and 11.10.
The main parameters are:
Ordering an Antenna
An antenna with matting connector can be ordered, for example, from Multi-Tech or GMBH:
6-Inch Antenna Cable – SMA Jack to MMCX Plug
Multi-Tech Systems, Inc.
http://www.multitech.com
Part Number: 45009630
IMS Connectors Systems GMBH
http://www.imscs.com/
MMCX Plug
The SocketModem requires an MMCX plug to connect to an antenna.
MMCX Connector Example (right angle type)
A small MMCX / SMA adapter can be ordered from:
Amphenol
http://www.amphenol.com/
Part Number: 908-31100
SIM Connector
The internal SIM interface of the SocketModem supports the standard 3V SIM only.
Index
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 142
Index
5
5V / 3.3V Jumper .....................................................18
A
antenna ..................................................................141
AT commands documentation ...............................134
AT Commands Reference Guides .............................9
AT&T wireless..........................................................38
B
Block Diagram..........................................................19
Bluetooth Configurations, Changing.......................132
Bluetooth technology..............................................126
bursts .....................................................................139
C
Certifications ..........................................................135
D
Design Considerations .............................................13
Developer Board ......................................................17
Developer Board Schematics.......................20, 21, 23
Developer Board, MT128SMI.................................109
Developer Kit
MT128SMI..........................................................105
MT2456SMI ..........................................................82
MT2456SMI-IP .....................................................90
MT5600/5656SMI .................................................43
MT5634SMI ..........................................................65
SocketEthernet IP.................................................98
SocketModem GPRS .........................................110
SocketWireless with Bluetooth ...........................126
Wireless CDMA ..................................................119
Developer’s Kit .......................................................134
E
Electrical Characteristics
MT128SMI (ISDN) ..............................................108
MT2456SMI-22.....................................................86
MT2456SMI-IP .....................................................94
MT5600/5656SMI .................................................49
MT5634SMI ..........................................................70
SIM Interface ......................................................115
SocketEthernet IP...............................................102
SocketWireless with Bluetooth ...........................130
Wireless CDMA ..................................................122
Wireless GSM/GPRS .........................................114
Electromagnetic Interference Considerations ..........14
EMC, Safety, and R&TTE Directive Compliance......28
ETSI .......................................................................141
F
Fax Commands Reference Guides............................9
FCC Regulations......................................................28
Firmware Upgrade ...................................................32
Flash Programming Protocol....................................35
Flash Upgrade..........................................................32
Flash Upgrade Example.....................................33, 34
H
Handling Precautions ...............................................14
I
idle mode ...............................................................139
Internal Registers .....................................................74
International Modem Restrictions.............................28
Interrupt Sources and Reset Control Table
MT5600SMI ..........................................................55
MT5634SMI ..........................................................75
J
JP19.........................................................................18
JP2...........................................................................18
JP3...........................................................................18
JP4...........................................................................18
JP6...........................................................................18
JP9...........................................................................18
L
Labeling the Product ................................................25
Legacy Voice Modem...............................................48
M
Mechanical Dimensions
SocketModem GSM/GPRS ................................112
SocketWireless Bluetooth...................................129
Universal Socket...................................................15
Wireless CDMA ..................................................121
Mechanical Drawing - EDGE .................................136
Microphone and Speaker MT5656SMI.....................62
microphone input....................................................140
MMCX (Miniature Micro Connector).......................141
MT128SMI Interface...............................................108
MT128SMI Schematics ..........................................109
N
New Zealand Telecom Warning Notice....................29
O
Ordering Replacement Parts....................................40
P
Parallel Interface
MT5600SMI ..........................................................51
MT5634SMI ..........................................................72
Parallel Interface Register Table
MT5600SMI ..........................................................52
MT5634SMI ..........................................................74
Parallel Pin Configurations
MT5600/5656SMI .................................................47
MT5634SMI ..........................................................69
Peripheral Devices
Wireless CDMA ..................................................124
Wireless GSM/GPRS .........................................117
Pin Configurations
MT128SMI (ISDN) ..............................................107
MT2456SMI-22.....................................................85
MT2456SMI-IP .....................................................93
MT5600SMI ..........................................................46
Index
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 143
MT5634SMI ..........................................................68
SocketEthernet IP...............................................101
SocketModem GSM/GPRS ................................113
SocketWireless with Bluetooth ...........................130
Pin Descriptions .....................................................137
Product Description – SocketModem EDGE ..........134
Product Ordering Information
MT128SMI..........................................................105
MT2456SMI-22.....................................................82
MT2456SMI-IP .....................................................90
MT5600/5656SMI .................................................42
SocketEthernet IP.................................................98
SocketModem GPRS .........................................110
SocketWireless with Bluetooth ...........................126
Wireless CDMA ..................................................119
Programmable Baud Rates Table
MT5600SMI ..........................................................60
MT5634SMI ..........................................................78
R
radio .......................................................................141
Radio Characteristics .....................117, 124, 140, 141
Receiver Features..................................................140
Recommended Parts .............................63, 80, 88, 96
Repair ......................................................................39
Replacement Parts...................................................40
RF Performances ...................................................141
S
Safety Considerations ..............................................13
SIM Connector .......................................................141
SIM Interface..........................................................116
SIMCLK..................................................................140
SIMDATA ...............................................................140
SIMRST .................................................................140
SIMVCC .................................................................140
Sleep Mode..............................................................67
Software Features SocketEthernet IP ....................100
South African Statement, Regulations .....................29
speaker output .......................................................140
Speakerphone..............................................12, 42, 48
Sprint wireless..........................................................38
Stereo jack feed jumper ...........................................18
Switch 3 ...................................................................18
Switch Block.............................................................18
T
Technical Specifications
MT128SMI (ISDN) ..............................................106
MT2356SMI-22.....................................................83
MT2456SMI-IP .....................................................91
MT5600/5656SMI .................................................44
MT5634SMI ..........................................................66
SocketEthernet IP.................................................99
SocketWireless with Bluetooth ...........................127
Wireless CDMA ..................................................120
Telecom Approvals ..................................................24
Telephone Answering Machine ..........................67, 92
Testing RS-232 jumper ............................................18
Timing Requirements
MT5600SMI ..........................................................50
MT5634SMI ..........................................................71
Tip and Ring Interface
MT2456SMI-22.....................................................87
MT5600/5656SMI .................................................61
MT5634SMI ..........................................................79
SocketEthernet IP...............................................103
Transmitter Features..............................................140
U
Universal Pin Locations............................................10
Universal Socket Design ............................................8
V
Voice
Speakerphone ..........................................12, 42, 48
Telephone Answering Machine ............................67
Voice Commands Reference Guides .........................9
W
WEEE Directive........................................................31
Wireless account activation......................................38
Wireless CDMA Interfaces .....................................123