Motorola Mobility T56DB1 Mobile Cellular/PCS GSM Transceiver Module User Manual g20 Cellular Engine Module Description

Motorola Mobility LLC Mobile Cellular/PCS GSM Transceiver Module g20 Cellular Engine Module Description

Exhibit 8a Preliminary Users Manual Draft

Developers Guide
98-08901C66-O
© Motorola Communications Ltd., 2003
A subsidiary of Motorola Inc.
All rights reserved.
g20 Cellular Engine
Module Description
DRAFT 1 (31.3.03)
REVISION HISTORY
Revision Date Purpose
DRAFT 1 (31.3.03)
March 2003
© Motorola Inc., 2003 98-08901C66-O
g20 Cellular Engine
Module Description
CONTENTS
REVISION HISTORY ................................................................................................................................................................ii
PREFACE
1.1 SCOPE OF THIS MANUAL .................................................................................................................................................1
1.2 WHO SHOULD USE THIS MANUAL.................................................................................................................................1
1.3 APPLICABLE DOCUMENTS ..............................................................................................................................................1
1.3.1 Documents...................................................................................................................................................................1
1.3.2 Standards.....................................................................................................................................................................1
1.4 HOW THIS MANUAL IS ORGANIZED..............................................................................................................................1
INTRODUCTION
2.1 GENERAL DESCRIPTION...................................................................................................................................................3
2.2 TERMS AND ABBREVIATIONS ........................................................................................................................................3
2.3 PRODUCT SPECIFICATIONS.............................................................................................................................................5
2.4 MODELS DESCRIPTION.....................................................................................................................................................7
2.5 REGULATORY APPROVALS.............................................................................................................................................7
2.6 REGULATORY STATEMENT.............................................................................................................................................7
2.7 SAFETY PRECAUTIONS.....................................................................................................................................................7
2.7.1 User Operation ............................................................................................................................................................7
2.7.2 Antenna Installation ....................................................................................................................................................8
HARDWARE DESCRIPTION
3.1 G20 BLOCK DIAGRAM DESCRIPTION AND OPERATION OVERVIEW ....................................................................9
3.1.1 g20 Block Diagram .....................................................................................................................................................9
3.1.2 Basic RS232 and Analog Audio Connectivity..........................................................................................................11
3.1.3 Basic RS232 and Digital Audio Connectivity...........................................................................................................11
3.1.4 Additional Recommended Connections....................................................................................................................12
3.1.5 G20 for Handset Configuration.................................................................................................................................13
3.2 POWER SUPPLY AND CURRENT CONSUMPTION .....................................................................................................13
3.2.1 Power Supply Design................................................................................................................................................13
3.2.2 G20 Current Consumption ........................................................................................................................................14
3.2.3 Turning the Unit On/Off ...........................................................................................................................................15
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3.2.4 Sleep Mode Options ................................................................................................................................................. 16
3.3 COMMUNICATION INTERFACES.................................................................................................................................. 18
3.3.1 RS232 ....................................................................................................................................................................... 18
3.3.2 USB .......................................................................................................................................................................... 20
3.3.3 SIM........................................................................................................................................................................... 21
3.3.4 SPI ............................................................................................................................................................................ 22
3.3.5 Unique g20 Interfaces............................................................................................................................................... 22
3.4 AUDIO INTERFACES........................................................................................................................................................ 23
3.4.1 Analog Audio Interfaces........................................................................................................................................... 23
3.4.2 Digital Audio Interface............................................................................................................................................. 27
3.5 ANTENNA........................................................................................................................................................................... 28
3.5.1 Antenna Performance Recommendations ................................................................................................................ 28
3.6 CHARGER INTERFACE.................................................................................................................................................... 28
3.7 DISPLAY INTERFACE...................................................................................................................................................... 28
3.8 ESD PROTECTION ............................................................................................................................................................ 29
CONNECTOR PIN
ASSIGNMENTS
4.1 CONNECTORS ................................................................................................................................................................... 31
4.2 PIN ASSIGNMENTS .......................................................................................................................................................... 31
MECHANICAL DESCRIPTION
5.1 MECHANICAL DETAILS.................................................................................................................................................. 37
SERVICE SUPPORT
6.1 CUSTOMER ASSISTANCE............................................................................................................................................... 39
6.2 TESTING A STANDALONE UNIT................................................................................................................................... 39
6.3 TROUBLESHOOTING....................................................................................................................................................... 39
6.4 PROGRAMMING ............................................................................................................................................................... 39
INDEX
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LIST OF FIGURES
Figure 1. g20 Block Diagram .......................................................................................................................................................9
Figure 2. Basic RS232 and Analog Audio Connectivity............................................................................................................11
Figure 3. Basic RS232 and Digital Audio Connectivity.............................................................................................................12
Figure 4. Additional g20 Connectivity .......................................................................................................................................12
Figure 5. g20 for Handset Configuration....................................................................................................................................13
Figure 6. VCC Signal During TX Periods..................................................................................................................................14
Figure 7. On/Off Signal Timing Diagram ..................................................................................................................................15
Figure 8. CTS Sleep Mode Timing.............................................................................................................................................16
Figure 9. DCE/DTE Connectivity ..............................................................................................................................................17
Figure 10. Waking Up the g20 when the DTE Wants to Send Data ..........................................................................................17
Figure 11. Waking Up the DTE when the g20 Wants to Send Data ..........................................................................................18
Figure 12. g20 RS232 Interface..................................................................................................................................................18
Figure 13. RS232 Connection.....................................................................................................................................................19
Figure 14. g20 USB Connection for g20 Models with a USB Driver........................................................................................20
Figure 15. g20 USB Connection for g20 Models without a USB Driver...................................................................................21
Figure 16. g20 SIM Connection .................................................................................................................................................21
Figure 17. TX_EN Transmission................................................................................................................................................22
Figure 18. Antenna-detect Circuit ..............................................................................................................................................23
Figure 19. GPRS-detect Coverage Indication.............................................................................................................................23
Figure 20. SPKR_N Output Configuration.................................................................................................................................24
Figure 21. Mechanical Mounting Requirements ........................................................................................................................37
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LIST OF TABLES
Table 1. Terms and Abbreviations ............................................................................................................................................... 3
Table 2. Product Specifications.................................................................................................................................................... 5
Table 3. g20 Models..................................................................................................................................................................... 7
Table 4. g20 Current Consumption............................................................................................................................................ 14
Table 5. SPI Pinout..................................................................................................................................................................... 22
Table 6. SPKR_N Output when g20 Set to Maximum Volume Level and Headset Interrupt is Low....................................... 24
Table 7. SPKR_N Output when g20 Set to Maximum Volume Level and Headset Interrupt is Not Low................................ 25
Table 8. SPKR_N Output when a 500mV RMS Signal is Transmitted..................................................................................... 25
Table 9. SPKR_N Output when g20 is in Handset Mode.......................................................................................................... 26
Table 10. SPKR_N Output when g20 is in Headset Mode........................................................................................................ 26
Table 11. Alert Transducer Levels for the ALERT_P Signal.................................................................................................... 27
Table 12. Antenna Performance Recommendations.................................................................................................................. 28
Table 13. g20 Interface Connector Pin Assignments................................................................................................................. 31
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1. PREFACE
1.1 SCOPE OF THIS MANUAL
This manual introduces the g20 embedded module and describes the technical details required by the data terminal equipment
(DTE) team to successfully integrate the Motorola g20 cellular engine into an original equipment manufacturer (OEM) wireless
host device.
We at Motorola want to make this guide as helpful as possible. Keep us informed of your comments and suggestions for
improvements.
You can reach us by Email at: GSM support-BSH015@email.mot.com.
1.2 WHO SHOULD USE THIS MANUAL
This manual is intended for all members of the DTE OEM integration team who are responsible for integrating the c18 module
into the host OEM device, including representatives from hardware, software and RF engineering disciplines.
1.3 APPLICABLE DOCUMENTS
PLEASE PROVIDE DETAILS FOR THIS SECTION.
1.3.1 Documents
g20 Developer’s Kit - 9808901C67-O
g20 AT Commands - 9808901C68-O
1.3.2 Standards
PLEASE PROVIDE DETAILS FOR THIS SECTION.
1.4 HOW THIS MANUAL IS ORGANIZED
This manual contains the following chapters:
Chapter 1 contains this Preface.
Chapter 2 introduces the g20 unit and provides important safety instructions.
Chapter 3 provides a detailed hardware description of the blocks and components comprising the g20.
Chapter 4 describes the pin assignments for g20 connectors.
Chapter 5 describes mechanical requirements for the g20 unit.
Chapter 6 provides contact information for Motorola Service Support and Customer Assistance, as well as valuable
troubleshooting and programming information.
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Preface
2 98-08901C64-O
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2. INTRODUCTION
2.1 GENERAL DESCRIPTION
The g20 is Motorolas newest family of embedded cellular products. Motorola continues its tradition of excellence by
introducing this new cellular engine family for GSM/GPRS communications, consisting of the d10, the d15 and the g18.
The new module is similar to a condensed cellular phone core, and can be integrated in any system or product that needs to
transfer voice or data information. Thus, it significantly enhances the systems capabilities, transforming it from a standalone,
isolated product to a powerful component connected to communication nets.
The new g20 is extremely small in dimensions, yet packed with a host of highly-advanced features designed to facilitate fast
and easy integration with OEM user products. It significantly shortens the development process for OEM developers, thanks to
its wide range of built-in applications, and minimizes the products time to market.
The g20 module is ideally suited for the automotive, telemetry, security, insurance and EPOS industries, for delivery and
handheld terminals, and for PDA markets.
2.2 TERMS AND ABBREVIATIONS
This section provides definitions for terms and acronyms used in this document.
Table 1. Terms and Abbreviations
Acronym/Term Definition/Description
AOC Automatic Output Control
BABT British Approval Board - Telecommunications
CSD Circuit-switched Data
DCE Data Communication Equipment (such as modems)
DCS Digital Cellular System (GSM in the 1800MHz band)
DOC Department of Communications (Canada)
DSP Digital Signal Processor
DTE Data Terminal Equipment (such as terminals, PCs and so on)
DTMF Dual-Tone Multi-Frequency
EGSM Extended Global System for Mobile Communications
EIRP Effective Isotropic Radiated Power
EMC WHAT DOES THIS STAND FOR?
EOTD Enhanced Observed Time Difference
EPOS Electronic Point of Sale
ERP Effective Radiated Power
ESD Electrostatic Discharge
FCC Federal Communications Commission (U.S.)
FTA Foreign Telecommunication Administration
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Introduction
4 98-08901C64-O
GCF WHAT DOES THIS STAND FOR?
GPIO General Purpose Input/Output
GPRS General Packet Radio Service
GSM Global System for Mobile Communications
IC Integrated Circuit
LNA Low-noise Amplifier
MMCX Multimedia Communications Exchange
MO Mobile Originated
MT Mobile Terminated
OEM Original Equipment Manufacturer
PCB Printed Circuit Board
PCM Pulse Code Modulation
PCS Personal Communication System (also known as CDMA 1900)
PDA Personal Data Assistant
PDU Packet Data Unit
PLL Phase-locked Loop
PTCRB PCS-1900 Type Certification Review Board (GSM North America)
R&TTE Radio and Telecommunications Terminal Equipment
RMS Root Mean Square
RTS Request To Send
SAR Segmentation and Reassembly
SIM Subscriber Identity Module
SMS Short Message Service
SPI Serial Peripheral Interface
TDMA Time Division Multiple Access
UART Universal Asynchronous Receiver Transmitter
USB Universal Serial Bus
USSD Unstructured Supplementary Services Data
VCC Voltage Common Collector
VSWR Voltage Standing Wave Ratio
Table 1. Terms and Abbreviations (Continued)
Acronym/Term Definition/Description
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Introduction
2.3 PRODUCT SPECIFICATIONS
Table 2. Product Specifications
Product Features
Operating systems: EGSM: 900/1800 MHz
GSM: 850/1900 MHz
Physical Characteristics
Size: Size: 24.4 x 48.2 x 6.0 mm
Mounting: Two 2.2 mm holes
Weight: 11.9 grams
Environmental
Operational temperature: -20°C +60°C
Functional temperature: -20°C +70°C
Storage temperature: -40°C +85°C
Performance
Operating voltage: Voltage: 3.0 - 4.2 V
Current consumption: < 2.5 mA @ DRX9 (Idle mode)
Tx power: 0.6 W, 850 MHz
2 W, 900 MHz
1 W, 1800/1900 MHz
Interfaces
Connectors: Single 70-pin, board-to-board
•RF MMCX
SIM Card: Local SIM connectivity
32K SIM
1.8/3.0 V
Serial: • RS232:
BR from 300 bps to 115 Kbps
Auto BR from 300 bps to 115 Kbps
•USB
12 Mbps USB specifications, Rev. 1.1
Data Features
GPRS: Multi-slot class 8 (4 down; 1 up)
Max BR 85.6 Kbps
Class B GSM 07.10 multiplexing protocol
Coding scheme CS1-CS4
CSD: Max BR 14.4 Kbps
SMS: MO/MT Text and PDU modes
Cell broadcast
FAX Class 1
Voice Features
Telephony
Digital audio
Differential analog audio lines
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Introduction
6 98-08901C64-O
Voice Features (Continued)
Vocoders EFR/ER/FR/AMR
DTMF support
Audio control: echo cancellation, noise suppression, side tone and gain control
GSM Supplementary Service
USSD Phase II
Call forwarding
Call hold, waiting and multiparty
Call diverting
Missed-call indicator
AOC
Call barring
Character Set
UTF8
UCS2
Control/Status Indicators
GPRS coverage
Wakeup
Antenna detect
TX enable
Reset
Entertainment mute
Features over RS232
Embedded TCP/IP stack
STK Class II
User Application
Application Programming Interface (API)
12 GPIO lines
2 A/D lines
Emergency and Location
FCC E911 Phase II Location Mandate using EOTD
AT Command Set
GSM 07.05
GSM 07.07
Motorola proprietary AT commands
Accessories
Firmware data loader
Data logger
Developer Kit
Note
Specifications are subject to change without prior notice.
Table 2. Product Specifications (Continued)
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98-08901C64-O 7
Introduction
2.4 MODELS DESCRIPTION
Table 3 lists the available g20 models.
2.5 REGULATORY APPROVALS
The following regulatory approvals apply for the g20 module:
FTA, FCC, DOC, PTCRB
R&TTE
GCF
EMC
BABT
QS9000 manufacturing
2.6 REGULATORY STATEMENT
WE NEED SOURCE MATERIAL FOR THIS SECTION.
2.7 SAFETY PRECAUTIONS
2.7.1 User Operation
Do not operate your telephone when a person is within 8 inches (20 centimeters) of the antenna. A person or object within 8
inches (20 centimeters) of the antenna could impair call quality and may cause the phone to operate at a higher power level than
necessary.
IMPORTANT: The telephone must be installed in a manner that provides a minimum separation distance of
20 cm or more between the antenna and persons to satisfy FCC RF exposure requirements for mobile transmitting devices.
IMPORTANT: To comply with the FCC RF exposure limits and satisfy the categorical exclusion requirements for mobile
transmitters, the following requirements must be met:
Table 3. g20 Models
Model Operating Bands Interface Connectors Serial Interface
F3001 GSM 850/1900 70-pin 0.5 mm pitch
MMCX RF connector RS232
F3002 EGSM 900/1800 70-pin 0.5 mm pitch
MMCX RF connector RS232
F3003 GSM 850/1900 70-pin 0.5 mm pitch
MMCX RF connector USB
F3004 EGSM 900/1800 70-pin 0.5 mm pitch
MMCX RF connector USB
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Introduction
8 98-08901C64-O
2.7.2 Antenna Installation
A minimum separation distance of 20 cm needs to be maintained between the antenna and all persons, otherwise a SAR test
will be required.
The transmitter effective radiated power must be less than 1.5 Watts ERP (2.45 Watts or 33.9 dBm EIRP). This requires that
the combination of antenna gain and feed line loss does not exceed 11 dBi.
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3. HARDWARE DESCRIPTION
3.1 G20 BLOCK DIAGRAM DESCRIPTION AND OPERATION OVERVIEW
This chapter describes the basic blocks comprising the g20 module and the connectivity options for the module.
3.1.1 g20 Block Diagram
Figure 1 shows a block diagram for the g20 module:
Figure 1. g20 Block Diagram
The g20 consists of the following blocks:
Power and Audio Management IC: This block is responsible for the power on/off process, analog audio drivers, internal
regulators, realtime clock activities, and the battery charging process. When an On command is received, this IC wakes up
the internal regulators and controls the reset process. This activity turns the unit on. When an Off command is received, this
IC sends the request to the main processor, which in turn shuts down the unit in an orderly fashion. During shutdown, the
unit is disconnected from the network, all tasks are terminated and the regulators are shut down. The on/off inputs (On/Off
and Ignition) are always on, even when the unit is off.
Transmitter
IC
Main
Processor
&
DSP
Memories
Power & Audio
Management IC
Receiver
IC
Control
Serial
USB
Driver
PCM
SIM
GPIO
SPI
ADC
Audio
Charger
Power
Interface Connector
G20
Ant
On/Off / IGN
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Hardware Description
10 98-08901C64-O
Main Processor and DSP: This block is responsible for all the main tasks in the unit. This block contains the following
components:
Main processor
DSP for controlling speech options
UART
USB block
Digital audio driver
SIM card
Two SPI buses (one internal and one externally accessible)
Main clock (26 MHz)
Address/data buses
RF PLL
Controller to the RF ICs, which is the heart of the unit
This module provides the following connectivity:
Address/data bus
UART to the user connector
USB via an optional USB driver to the user connector
Digital audio (PCM) to the user connector
SIM card interface
SPI to the user connector
SPI to control the RF ICs
Control signals to the power amplifier IC
Handshake with the Power and Audio Management IC
General I/O to the user connector
Receiver Block: This block is an RF block that contains all the receiver channels. It contains the following components:
Front filters
LNAs
Mixers
VCOs
I/Q outputs
Control signals
Transmitter Block: This is an RF block that contains all the transmitter channels. It contains the following components:
Power amplifiers
Power control loop
Antenna switch
Harmonic filter
Input buffers
Control signals
Antenna connection
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Hardware Description
3.1.2 Basic RS232 and Analog Audio Connectivity
The following basic g20 connectivity requirements apply for UART (RS232) and analog audio connections (see Figure 2 for
reference):
The RS232 is connected via eight pins to the g20.
The SIM card is connected via five pins to the SIM driver of the g20.
The microphone is connected via two pins to the g20 (Mic and Mic Ground).
The Speaker is connected via two differential lines to the g20.
The power supply is connected via eight pins (four VCC and four Ground) to the g20.
The On/Off or Ignition pin is connected.
Figure 2. Basic RS232 and Analog Audio Connectivity
3.1.3 Basic RS232 and Digital Audio Connectivity
The following basic g20 connectivity requirements apply for UART (RS232) and digital audio connections (see Figure 3 for
reference):
The RS232 is connected via eight pins to the g20.
The SIM card socket is connected via five pins to the SIM driver of the g20.
The DTE DSP is connected via five pins to the g20 (PCM).
The power supply is connected via eight pins (four VCC and four Ground) to the g20.
The On/Off or Ignition pin is connected.
DTE
UART
SIM
Socket
Transmitter
IC
Main
Processor
&
DSP
Memories
Power & Audio
Management IC
Receiver
IC
Control
Serial
USB
Driver
PCM
SIM
GPIO
SPI
ADC
Audio
Charger
Power
Interface Connector
G20
Ant
Power
Supply
Mic
SPKR
On/Off or
Ignition
On/Off - IGN
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Hardware Description
12 98-08901C64-O
Figure 3. Basic RS232 and Digital Audio Connectivity
3.1.4 Additional Recommended Connections
Additional g20 connectivity options are described below (see Figure 4 for reference):
A USB connector that is connected via three lines to the g20. In this case, when USB is used, the DTE UART should be in
tri-state (high impedance).
A USB connector that is connected via a USB driver to the g20 (in g20 models without a USB driver). When USB is used,
the DTE UART should be in tri-state (high impedance).
An SPI block that is connected via four pins to the g20 (for debug accessibility).
Figure 4. Additional g20 Connectivity
Transmitter
IC
Main
Processor
&
DSP
Memories
Power & Audio
Management IC
Receiver
IC
Control
Serial
USB
Driver
PCM
SIM
GPIO
SPI
ADC
Audio
Charger
Power
Interface Connector
G20
DTE
UART
SIM
Socket
Ant
Power
Supply
DTE
DSP
On/Off / IGN On/Off or IGN
Transmitter
IC
Main
Processor
&
DSP
Memories
Power & Audio
Management IC
Receiver
IC
Control
Serial
USB
Driver
PCM
SIM
GPIO
SPI
ADC
Audio
Charger
Power
Interface Connector
G20
USB
Driver
Ant
USB
Connector
SPI
Device
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Hardware Description
3.1.5 G20 for Handset Configuration
g20 connectivity when using the g20 as a cellular phone engine is described below (see Figure 5 for reference):
The display is connected via five pins to the g20.
The keypad is connected via eight pins to the g20.
The SIM card socket is connected via five pins to the g20 SIM driver.
The charger is connected via six pins (Interface to National LM3652) to the g20.
The microphone is connected via two pins (Mic and Mic Ground) to the g20.
The speaker is connected via two differential lines to the g20.
The alert device is connected via two differential lines to the g20.
The vibrator is connected via one pin to the g20.
The battery is connected to the charger, and the charger is connected to the VCC and Ground pins.
Figure 5. g20 for Handset Configuration
3.2 POWER SUPPLY AND CURRENT CONSUMPTION
This section describes the following power-related considerations for the g20:
Power supply design
g20 current consumption
Turning the unit on/off
Sleep mode options
3.2.1 Power Supply Design
The following power supply design considerations apply to the g20:
The g20 is designed to operate between 3.0 V to 4.2 V on the g20 input (after all losses). In order to reduce battery power
consumption, it is important to verify power supply line and regulator losses in the PCB.
The g20 is a GSM/GPRS phone that transmits in 0.5 ms pulses every 4.6 ms. The peak current is approximately 2.0 A.
Transmitter
IC
Main
Processor
&
DSP
Memories
Power & Audio
Management IC
Receiver
IC
Control
Display
SIM
Audio
Charger
Power
Interface Connector
G20
Display
SIM
Socket
Ant
Battery
Mic
SPKR
Key Pad
Alert
Vibrator Alert
Vibrator
Key Pad
Charger
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14 98-08901C64-O
When the power supply is lower than 2.85 V, the g20 software determines that the battery is low and disconnects the unit.
When the voltage is greater than 4.25 V, the g20 software detects an over voltage condition and does not allow the unit to
establish a call.
The VCC line typically drops during TX periods.
Figure 6. VCC Signal During TX Periods
To minimize the ∆, it is recommended to use lines that are as short as possible, and to place a 1000uF capacitor (or the maximum
possible) in the g20 VCC input. (When a battery is used, there is no need for a large capacitor.)
It is recommended to keep the less than 0.3 V.
3.2.1.1 Power Supply RF Filtering
It is recommended to add RF filtering to the DC lines.
Use 100nF, 39pF, 22pF or 8.2pF capacitors in parallel to the power supply lines (close to the g20 connector). MUST ALL
THESE CAPACITORS BE USED IN PARALLEL? OR SOME COMBINATION?
3.2.2 G20 Current Consumption
In order to design the power supply correctly and to calculate the battery life, you should take into account the current
consumption of the g20 when operating in different modes.
Note
The power supply should be able to drive at least 2.5 A.
Table 4. g20 Current Consumption
Mode Current Consumption (mA RMS)
g20 in Sleep mode (camped and
Sleep-mode enabled) < 2.5 mA, RMS @ DRX9, Typical 2.2 mA
< 4.5 mA, RMS @ DRX2, Typical 3.5 mA
g20 during search time < 40 mA, RMS, Typical 25 mA, RMS
g20 off < 100 uA Typical 25 uA
g20 during a call
GSM 900 @ Power level #5 < 350 mA, Typical 270 mA
@ Power level #10, Typical 160 mA
@ Power level #19, Typical 135 mA
TX TX TX
Transmit
Periods
VCC
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Hardware Description
3.2.3 Turning the Unit On/Off
Two different mechanisms are available to turn the g20 on and off:
On/Off signal (Pin 53)
Ignition line (Pin 51)
3.2.3.1 On/Off Signal
After power is applied to the g20, the on/off signal is pulled high to the VCC by a 200k resistor.
To turn the g20 on, the on/off signal should be pulled low for a minimum of 700 ms.
After the g20 is turned on, the line should be pulled low for a minimum of 1.1 seconds to turn it off. The unit can be turned off
only if at least seven seconds have elapsed since turning it on.
Figure 7 shows the timing diagram for the on/off signal.
Figure 7. On/Off Signal Timing Diagram
In Figure 7, the following timing requirements apply:
T1 minimum = 0.7 seconds.
T2 minimum = 7 seconds.
T3 minimum = 1.1 seconds.
GSM 850 @ Power level #7 < 250 mA, Typical 185 mA
@ Power level #10, Typical 160 mA
@ Power level #19, Typical 135 mA
DCS 1800 @ Power level #0 < 300 mA, Typical 220 mA
@ Power level #10, Typical 160 mA
@ Power level #19, Typical 135 mA
PCS 1900 @ Power level #5 < 300 mA, Typical 240 mA
@ Power level #10, Typical 160 mA
@ Power level #19, Typical 135 mA
Note
DRX2/9 is the rate used by the base station to query the mobile station. The network operator sets this parameter.
Table 4. g20 Current Consumption (Continued)
Mode Current Consumption (mA RMS)
T1 T2 T3
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Hardware Description
16 98-08901C64-O
3.2.3.2 Ignition Line
When the g20 ignition line is held at a high level, the g20 is turned on. When this line is pulled low, the g20 is turned off. In
order to protect the line from voltage bounces, the g20 is tuned off only if the line is held low for at least 500 ms.
The high input to the ignition line must be greater than 2.75 V. The line can tolerate up to 40 V.
After the g20 is turned on, the application should wait for DSR before sending data to the g20. The DSR becomes active low
eight seconds after the start of T1, or after the ignition line is pulled high. DSR is only valid with UART, and is not valid with
USB.
3.2.4 Sleep Mode Options
This section describes how the g20 can be awakened by the DTE and vice-versa.
The DCE (g20) and the DTE can incorporate a sleep mechanism in their application in order to conserve battery life.
Sleep mode enables the g20 to be awakened when the DTE wants to communicate with it. Conversely, it also enables the DTE
to be awakened by the g20 when the g20 wants to communicate with it.
3.2.4.1 General
The g20 Sleep Mode option can be enabled or disabled using ATS24.
Sleep mode is activated by sending ATS24 = n, where n = 1, 2, 3 or 4 seconds. (To disable Sleep mode, send ATS24=0.)
The g20 drops the CTS (h/w Flow Control) when it is in Sleep mode.
The g20 does not enter Sleep mode when data is present on TXD or RXD lines.
At the end of the TXD (meaning, the TXD buffer is empty), the g20 waits n seconds (as defined in ATS24 = n) before enter-
ing Sleep mode.
The DTE uses CTS to send data only when the g20 is awake. The DTE waits when the g20 is in Sleep mode.
The DTE should drop RTS during the sleep period in order to prevent the loss of data sent by the g20.
Figure 8. CTS Sleep Mode Timing
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Hardware Description
3.2.4.2 DCE/DTE Connectivity
Figure 9 shows DCE/DTE connectivity:
Figure 9. DCE/DTE Connectivity
Waking Up the DCE:
The following apply when waking up the DCE:
The Wake-up In line is used to awaken the g20. This input is routed into an Interrupt in the g20.
Whenever the Wake-up In line is at logic low, the g20 remains in an awake state.
When the DTE needs to send data, it should activate this line, wait 30 ms (the wake time required for the g20), and then start
sending the data.
While the DTE is sending data, the wake-up line should remain low, so that the g20 does not enter Sleep mode.
Figure 10. Waking Up the g20 when the DTE Wants to Send Data
Waking Up the DTE:
The following apply when waking up the DTE:
The g20 uses the Wake-up Out line to indicate to the DTE that data is present.
The DTE should not enter Sleep mode when the Wake-up Out line is low.
When the g20 has data to send to the DTE, it drops the Wake-up Out line to low.
The g20 will send the Wake-up Out line #ms to low, as indicated by S10x in Figure 11.
DTE TXD
Wake up
In line
30 ms 30 ms 30 ms
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Hardware Description
18 98-08901C64-O
While the g20 is sending data, the Wake-up Out line remains low.
After the sending of data is completed, the g20 brings the Wake-up Out line to high.
The DTE should keep RTS off during this sleep period in order to avoid sending data when it is not ready.
Figure 11. Waking Up the DTE when the g20 Wants to Send Data
3.3 COMMUNICATION INTERFACES
This section describes the following four interfaces that are available in the g20:
RS232
USB
SIM
SPI
3.3.1 RS232
The following apply when using
the RS2332 interface of the g20:
The g20 supports full hard-
ware flow control (9 pins),
software flow control (Xon/
Xoff) and non-flow control.
The g20 UART is connected directly to the interface connector.
The g20 is a DCE device. Applicable line terminology is shown in Figure 12.
Figure 12. g20 RS232 Interface
RXD
Wake up Out
line
S10x ms S10x ms S10x ms
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98-08901C64-O 19
Hardware Description
3.3.1.1 RS232 Levels
RS232 levels are as follows:
Vih = 1.95 V minimum, 3.0 V maximum
Vil = 0.8 V maximum
Voh = 2.56 V minimum @ 100 uA
Vol = 0.2 V maximum @ 100 uA
3.3.1.2 RS232 Connection
Figure 13 shows an RS232 connection diagram:
Figure 13. RS232 Connection
The following apply for g20 RS232 connections:
The g20 can use both UART and USB connectors, but cannot use them both simultaneously.
When USB is detected (by sensing the USB VBUS signal), the UART is disconnected from the g20 main processor pins and
USB functionality is added instead.
The DTE should unload the RS232 lines when USB is used in order for the USB to function properly.
RS232 signals are routed directly from the main processor to the connector.
Note
A buffer is required whenever DTE levels do not match g20 levels.
Note
In g20 models without a USB driver (F3001and F3002 models), RS232 signals can be used to connect an external
USB driver.
G20 Main
Processor
U
A
R
T
U
S
B
M
U
X
USB
Driver
D+
D-
USB VBUS
USB
Detect
TXD 21
RXD 11
RTS
CTS
DTR
DSR
DCD
RI
9
15
19
13
17
23
12
14
10
D
T
E
U
A
R
T
USB
connector
3 state
G20 DTE
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Hardware Description
20 98-08901C64-O
3.3.2 USB
The following apply for g20 USB connections:
The g20 can use a USB port to communicate with a DTE device.
The USB port is also used to load software into the g20. It is recommended to include connectivity to this port in the user
application.
The g20 supports USB1.1 at a baud rate of 12 Mbps.
The g20 supports two basic types, one with a USB driver (models F3003 and F3004), and one with the USB driver removed
(models F3001 and F3002).
3.3.2.1 USB Connection
Figure 14 shows g20 connection for g20 models with a USB driver:
Figure 14. g20 USB Connection for g20 Models with a USB Driver
As shown in Figure 14, the g20 USB is connected via three lines to the USB connector in the user application: D+, D- and USB
VBUS. When USB VBUS is applied, the g20 detects it and switches the main processor to USB mode.
Note
The DTE UART loads the USB driver/main processor lines. Therefore, the UART should be kept in tri-state.
G20 Main
Processor
U
A
R
T
U
S
B
M
U
X
USB
Driver
D+
D-
USB VBUS
USB
Detect
TXD 21
RXD 11
RTS
CTS
DTR
DSR
DCD
RI
9
15
19
13
17
23
12
14
10
D
T
E
U
A
R
T
USB
connector
3 state
G20 DTE
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98-08901C64-O 21
Hardware Description
Figure 15 shows g20 USB connection for g20 models without a USB driver, using an external USB driver connection. The
circuit shown in this figure can be used by the user application in cases where a USB driver is needed.
Figure 15. g20 USB Connection for g20 Models without a USB Driver
3.3.3 SIM
The g20 includes a SIM card driver, however, it does not contain a SIM socket. SIM signals are routed to the interface connector
and include all the functionality required for SIM card operation.
3.3.3.1 SIM Connection
Figure 16 shows a g20 SIM connection:
Figure 16. g20 SIM Connection
48
44
1-4
SIM
Driver
6.8V Zeners
with low
Capacitance
For ESD protection
1uF
G20
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Hardware Description
22 98-08901C64-O
The following apply for g20 SIM connections:
The g20 passes all SIM ETSI tests when an external socket is connected to the g20 with lines shorter than 10 cm.
Longer connections require SIM testing to be performed in the user application.
The g20 can work with 1.8 V or 3 V SIM cards.
The g20 provides ESD protection for the SIM lines (6.8V Zener diodes with low capacitance), and for 1uF capacitors to the
SIM VCC.
The SIM_PD (SIM Present Detect) signal is active when it is pulled low.
3.3.4 SPI
The SPI is a standard microprocessor bus used as a g20 debugging port. This port activates a debug option that enables logs to
be taken from the g20 while it is operating. It is recommended that this bus be accessible in the user application. In the g20
Developers Kit, the SPI is driven to an SPI/RS232 interface. The SPI is then converted and uses the RS232 port for debugging.
In the g20 Developers Kit, the SPI bus is converted to an RS232 protocol using a special interface circuit. It then uses the
standard RS232 port for debugging. Table 5 shows the pins available on the SPI bus.
3.3.4.1 SPI Connection
3.3.5 Unique g20 Interfaces
The g20 features certain unique functions (pins) that may be required by selected user applications, such as TX_EN, Antenna
Detect, GPRS Detect and Entertainment Mute. Each of these functions is described in the sections that follow.
3.3.5.1 Transmit Enable
This pin indicates when the g20 is transmitting RF in the antenna.
Figure 17. TX_EN Transmission
Table 5. SPI Pinout
Pin # Name Function Input/Output
70 SPI_CS SPI chip-select Output
62 SPI_IRQ SPI Interrupt Input
64 SPI_DIN SPI MISO input Input
68 SPI_DOUT SPI MOSI output Output
66 SPI_CLK SPI clock Output
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Hardware Description
3.3.5.2 Antenna Detect
This pin indicates whether or not the antenna is inserted. This option was requested by a specific customer and was prepared
specifically for their board layout. Thus, this option is not supported by the basic g20 models.
The antenna-detect circuit detects whether the impedance of the antenna is 100 K or lower. The antenna must have a resistance
to ground of less than 100 K. in order to be detected.
Figure 18. Antenna-detect Circuit
3.3.5.3 GPRS-detect Coverage Indication
This pin indicates whether or not the g20 is located in an area with GPRS network coverage. This pin can be used to indicate
the GPRS coverage status before GPRS section activation has occurred, or before a switch to circuit-switched data is made.
Figure 19. GPRS-detect Coverage Indication
3.3.5.4 Entertainment Mute
This pin is reserved for future use. It will be dedicated to automotive applications in which there is a need to mute the entertain-
ment radio when there is a cellular call.
3.4 AUDIO INTERFACES
The g20 has an analog audio interface and a digital audio interface. Both of these interfaces are described in the sections that
follow.
3.4.1 Analog Audio Interfaces
The g20 supports microphone input, headset microphone input, differential speaker output, and a differential alert speaker.
3.4.1.1 Analog Input
The g20 has two analog inputs that are referenced to the microphone ground (pin 59):
Headset microphone: Pin 57 is the headset microphone input. Input to this line can be directly from a headset microphone.
In order for the headset microphone to be active, the headset interrupt signal (pin 55) must be pulled low. The maximum
input to the g20 headset microphone before there is a distortion of the signal in the network is 12 mV RMS.
Hands-free microphone: Pin 61 is the microphone input to the g20. The microphone is active when the headset interrupt
signal is not pulled low. The maximum input to the g20 microphone before there is a distortion of the signal in the network
is 32 mV RMS.
No GPRS Coverage GPRS Coverage
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Hardware Description
24 98-08901C64-O
3.4.1.2 Analog Output
The g20 has a differential speaker output and an alert output:
Speaker output: When headset mode is used, the headset speaker should be connected to the SPKR_N signal of the g20.
When a differential amplifier is used, both lines should be connected. An 8-ohm speaker can be connected directly to the
speaker lines.
Alert: The g20 supports a direct connection for an alert transducer, in order to build a handset from the g20. All the sounds
that are transmitted to the alert can be routed to the speaker using the appropriate AT command.
Table 6 shows the SPKR_N output in headset mode for different network signal levels when the g20 is set to the maximum
volume level and the headset interrupt is pulled low.
The measurements shown in Table 6 apply in the following configuration:
Figure 20. SPKR_N Output Configuration
Table 6. SPKR_N Output when g20 Set to Maximum Volume Level and Headset Interrupt is Low
dBm0 mV RMS SPKR_N
3.14 1111.9 94
0 774.6 67
-5 435.6 38
-10 244.9 22
-15.5 130 12.5
-16 122.8 12
-17 109.4 11
-20 77.5 8.5
-25 43.6 6.5
-30 24.5 5.5
3000 250
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98-08901C64-O 25
Hardware Description
Table 7 shows the output of the SPKR_N signal for different network signal levels when the g20 is set at the maximum volume
level and the headset interrupt is not pulled low.
Table 8 shows the SPKR_N output at different volume levels, when a 500mV RMS signal is transmitted from the network.
Table 7. SPKR_N Output when g20 Set to Maximum Volume Level and Headset Interrupt is Not Low
dBm0 mV RMS SPKR_N
3.14 1111.9 335
0 774.6 242
-5 435.6 134
-10 244.9 76
-15.5 130 41
-16 122.8 39
-17 109.4 34
-20 77.5 24
-25 43.6 14
-30 24.5 8
max 2900 900
Table 8. SPKR_N Output when a 500mV RMS Signal is Transmitted
Handset Volume SPKR_N
0 (lowest gain) 15
120
228
339
455
578
6110
7 (highest gain) 155
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Hardware Description
26 98-08901C64-O
Table 9 shows the typical keypad tone levels generated by the g20. These measurements taken with the g20 in handset mode
(meaning the headset-detect signal is not pulled low).
Table 10 shows the keypad tone levels generated by the g20 when in headset mode (meaning the handset-detect signal is pulled
low).
Table 9. SPKR_N Output when g20 is in Handset Mode
Handset Volume SPKR_N
00
1122
2172
3244
4342
5482
6678
7954
Table 10. SPKR_N Output when g20 is in Headset Mode
Handset Volume SPKR_N
00
14
25.5
37.5
410.5
514
619.5
727.5
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98-08901C64-O 27
Hardware Description
Table 11 shows the levels of the alert transducer measured on the ALERT_P signal at different ring volumes.
3.4.1.3 Audio Circuit Design Considerations
In order to design an audio circuit that produces clear audio, without being affected by the GSM transmission, the following
guidelines should be considered when designing the circuit:
The audio input to the g20 should be referenced to the MIC_GND line of the g20.
The microphone bias of the g20 for both the microphone and headset is 2.2 V. If a microphone with a different voltage is
used, the bias should be as clean as possible, and referenced to MIC_GND. Because most GSM buzz (217Hz TDMA noise)
is generated from the microphone path, if a different bias is created, it should be filtered to supply DC only.
The MIC_GND and GND are connected inside the g20 and should not be connected to the application board.
Keep the lines of the microphone inputs as short as possible. To filter the lines from RF emission, 39pF capacitors can be
used.
The g20 GND should be connected on all four pins, with two mounting screws to the application ground.
If possible, the RF cable ground from the g20 should be connected to the GND of the g20.
The digital lines of the application should never be referenced to the MIC_GND.
3.4.2 Digital Audio Interface
The g20 digital audio interface is a full-duplex SAP (serial audio port) comprised of four signals:
PCM_FS: This pin is used for frame sync output provided by the g20.
PCM_CLK: This pin is used for the clock output provided by the g20.
PCM_DIN: This pin is the serial input to the g20 SAP.
PCM_DOUT: This pin is the serial output of the g20 SAP.
The following conditions apply to the digital audio interface of the g20:
The g20 SAP works in network mode, with four slots in each frame. Each slot consists of 16-bit data.
The frame sync rate is 8 KHz, and the clock rate is 512 KHz.
The g20 is the master in the SAP network. Therefore, the connected DSP should be configured as the host.
Table 11. Alert Transducer Levels for the ALERT_P Signal
Handset Volume ALRT_P
0107
1153
2206
3305
4424
5600
6850
71200
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Hardware Description
28 98-08901C64-O
3.5 ANTENNA
The g20 has two models, one for North America Frequency bands (850/1900 MHz), and one for European Bands
(900/1800 MHz). The following connection requirements apply for the g20 antenna:
The g20 is terminated with an MMCX connector, and with 50-ohm impedance in the relevant frequencies.
The g20 can be connected to any antenna with 50-ohm impedance in the relevant frequency bands.
The g20 is designed to work on VSWR, up to 3:1 The antenna should meet this requirement.
3.5.1 Antenna Performance Recommendations
Table 12 lists the performance recommendations for the g20 antenna.
3.6 CHARGER INTERFACE
g20 software supports charging circuitry for 3.6 V Lithium Ion batteries on some g20 models. The software interface is designed
to work with a charging IC from National Semiconductor, model LM3652. Refer to the schematics chapter in the g20
Developers Kit for more details about the design of the charging circuitry.
3.7 DISPLAY INTERFACE
The g20 supports a four-level gray-scale display with 96 x 65 pixels. The following five lines should be connected to the display:
LCD_CS
LCD_RS
LCD_DATA
LCD_CLK
RESET_N
Use the BL_SINK line for backlighting (display and keypad) when using the display. The backlight sink can provide current up
to 100 mA, and can be used as an open drain output for more than 100 mA.
Table 12. Antenna Performance Recommendations
Frequencies:
GSM 850 TX 824 849 MHz
RX 869 893 MHz
GSM 900 TX 880 915 MHz
RX 925 960 MHz
DCS 1800 TX 1710 1785 MHz
RX 1805 1880 MHz
PCS 1900 TX 1850 - 1910 MHz
RX 1930 1990 MHz
Gain: 0 dBi (unity) gain or greater
Impedance: 50 Ohm
VSWR: Typical: 1.5:1
Worst case: 2.5:1
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Hardware Description
3.8 ESD PROTECTION
In general, the g20 does not include embedded ESD protection circuits. This type of protection should be implemented in the
customer application. Partial ESD protection is provided, as follows:
SIM lines are protected up to 3 KV with 6.8 V Zener Diodes.
VCC input is protected with a 2.2 uF capacitor.
Ignition input is protected with a 100 nF capacitor.
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Hardware Description
30 98-08901C64-O
DRAFT 1 (31.3.03)
98-08901C64-O 31
4. CONNECTOR PIN
ASSIGNMENTS
4.1 CONNECTORS
The g20 has two connectors: the g20 interface connector and the g20 RF connector. Each is described below.
4.2 PIN ASSIGNMENTS
The g20 interface is provided via a 70-pin connector. Table 13 describes the pin assignments for the g20 interface connector.
g20 Interface Connector Mating Connector Stacking Height
70-pin, 0.5mm pitch, Molex 53748-0708 Molex 52991-0708 3.0 mm
g20 RF Connector Mating Connector
Standard MMCX female Standard MMCX male (connector for cable)
Table 13. g20 Interface Connector Pin Assignments
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
Power:
1 GND Ground GND
2 GND Ground GND
3 GND Ground GND
4 GND Ground GND
5 VCC Power supply I DC 3.0 3.6 4.2 V
6 VCC Power supply I DC 3.0 3.6 4.2 V
DRAFT 1 (31.3.03)
Connector Pin Assignments
32 98-08901C64-O
7 VCC Power supply I DC 3.0 3.6 4.2 V
8 VCC Power supply I DC 3.0 3.6 4.2 V
GPIO:
16 WAKEUP_IN Wakeup input I Logic 2.775 V
26 WAKEUP_
OUT Wakeup
output O Logic 2.775 V
25 RESET Reset signal
output O Logic 2.775 V
53 ON_OFF On/off switch I DC 3.0 3.6 4.2 V
51 IGN Ignition input I Logic 2.775 3.6 16 V
39 TX_EN GSM transmit
indicator O Logic 2.775 V
41 ANT_DET Antenna-
presence
detect O Logic 2.775 V
49 GPRS_DET GPRS
coverage
indicator O Logic 2.775 V
37 ENT_MUTE Entertainment
mute O Logic 2.775 V
UART:
21 TXD RS232 TXD I Logic 2.775 V USB VMIN
11 RXD RS232 RXD O Logic 2.775 V USB
VPOUT
9 RTS RS232 RTS I Logic 2.775 V USB XRXD
15 CTS RS232 CTS O Logic 2.775 V USB
VMOUT
19 DTR RS232 DTR I Logic 2.775 V USB VPIN
Table 13. g20 Interface Connector Pin Assignments (Continued)
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
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98-08901C64-O 33
Connector Pin Assignments
13 DSR RS232 DSR O Logic 2.775 V USB
TXENB
17 DCD RS232 DCD O Logic 2.775 V USB
SUSPEND
23 RI RS232 RI O Logic 2.775 V USB
SOFTCON
USB:
10 USB_DET USB-
connection
detect I DC 4.4 5 5.25 V USB_
VBUS
12 Not
connected USB_D+
14 Not
connected USB_D-
SPI:
70 SPI_CS SPI chip-
select O Logic 2.775 V
62 SPI_IRQ SPI interrupt I Logic 2.775 V
64 SPI_DIN SPI MISO
input I Logic 2.775 V
68 SPI_DOUT SPI MOSI
output O Logic 2.775 V
66 SPI_CLK SPI clock O Logic 2.775 V
SIM Card:
50 SIM_PD SIM-
presence
detect I Logic 2.775 V
48 SIM_VCC SIM VCC O DC 1.8 3 V
44 SIM_RST SIM reset O Logic 1.8 3 V
Table 13. g20 Interface Connector Pin Assignments (Continued)
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
DRAFT 1 (31.3.03)
Connector Pin Assignments
34 98-08901C64-O
52 SIM_DIO SIM serial
data I/O Logic 1.8 3 V
46 SIM_CLK SIM clock O Logic 1.8 3 V
PCM Audio:
18 PCM_DIN Digital audio
receive I Logic 2.775 V
20 PCM_DOUT Digital audio
transmit O Logic 2.775 V
22 PCM_CLK Digital audio
clock O Logic 2.775 V
24 PCM_FS Digital audio
frame sync O Logic 2.775 V
Display:
54 LCD_CS Display chip-
select O Logic 2.775 V
60 LCD_RS Display
register-select O Logic 2.775 V
56 LCD_DATA Display serial
data O Logic 2.775 V
58 LCD_CLK Display serial
clock O Logic 2.775 V
Keypad:
30 KBC0 Keypad
column 0 I Logic 2.775 V
28 KBC1 Keypad
column 1 I Logic 2.775 V
32 KBR0 Keypad row 0 I Logic 2.775 V
34 KBR1 Keypad row 1 I Logic 2.775 V
36 KBR2 Keypad row 2 I Logic 2.775 V
Table 13. g20 Interface Connector Pin Assignments (Continued)
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
DRAFT 1 (31.3.03)
98-08901C64-O 35
Connector Pin Assignments
38 KBR3 Keypad row 3 I Logic 2.775 V
40 KBR4 Keypad row 4 I Logic 2.775 V
42 KBR5 Keypad row 5 I Logic 2.775 V
Audio:
67 SPKR_N Speaker
inverted OAudio V
69 SPKR_P Speaker O Audio V
63 ALRT_N Alert speaker
inverted OLogic V
65 ALRT_P Alert speaker O Audio V
61 MIC Microphone
input IAudio V
59 MIC_GND
Microphone
ground What
goes in I/O
column for
this pin?
GND V
57 HDST_MIC Headset
microphone IAudio V
55 HDST_INT Headset-
detect
interrupt I Logic 2.775 V
Charger:
35 CHRG_DET Charger-
presence
detect I Logic 2.775 V
33 CHRG_
STATE Charger rate
indicator I Logic 2.775 V
31 CHRG_SW Accessory
current control O Logic 2.775 V
Table 13. g20 Interface Connector Pin Assignments (Continued)
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
DRAFT 1 (31.3.03)
Connector Pin Assignments
36 98-08901C64-O
29 CHRG_DIS Charger
disable O Logic 2.775 V
ADC:
45 CHRG_TYP Accessory-
type detect I Logic 0 2.775 V
47 THERM Temperature
measurement I Logic 0 2.775 V
Miscellaneous:
27 BL_SINK Backlight
current sink IDC 80100mA
43 VIB_OUT Vibrator
regulator ODC 1.3 V
Table 13. g20 Interface Connector Pin Assignments (Continued)
Pin # Signal Name Description I/O Signal
Level Models
with USB
Driver/
Alternate
Function
Min Typ Max Units
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98-08901C64-O 37
5. MECHANICAL DESCRIPTION
5.1 MECHANICAL DETAILS
This section describes the mechanical details for the g20:
Size: 45.2x24.4x6 mm
Mounting: Two 2.4 mmØ holes are provided that accommodate M2 screws or #1-64 UNC 2A machine screws. Torque to
2 inches per pound. Refer to Figure 21 below for mounting requirements.
Figure 21. Mechanical Mounting Requirements
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Mechanical Description
38 98-08901C64-O
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98-08901C64-O 39
6. SERVICE SUPPORT
6.1 CUSTOMER ASSISTANCE
For customer assistance, contact us as directed below:
Helpdesk email: n2cshd@motorola.com
Helpdesk telephone: +972-3-568-4040
6.2 TESTING A STANDALONE UNIT
PLEASE PROVIDE DETAILS FOR THIS SECTION.
6.3 TROUBLESHOOTING
PLEASE PROVIDE DETAILS FOR THIS SECTION.
6.4 PROGRAMMING
PLEASE PROVIDE DETAILS FOR THIS SECTION.
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40 98-08901C64-O
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98-08901C64-O 41
7. INDEX
DRAFT 1 (31.3.03)
Index
42 98-08901C64-O
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