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

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Document Description	Exhibit 8a Preliminary Users Manual Draft
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Date Submitted	2003-05-23 00:00:00
Date Available	2003-05-23 00:00:00
Creation Date	2003-03-31 16:58:42
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Document Lastmod	2003-05-23 14:36:53
Document Title	g20 Cellular Engine Module Description
Document Creator	Windows NT 4.0
Document Author:	Motorola Communications Ltd.

DRAFT 1 (31.3.03)
g20 Cellular Engine
Module Description
© Motorola Communications Ltd., 2003
A subsidiary of Motorola Inc.
All rights reserved.
Developer’s Guide
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REVISION HISTORY
Revision
Date
Purpose
DRAFT 1 (31.3.03)
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
© Motorola Inc., 2003
March 2003
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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
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2. INTRODUCTION
2.1
GENERAL DESCRIPTION
The g20 is Motorola’s 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 system’s 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 product’s 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
Table 1. Terms and Abbreviations (Continued)
Acronym/Term
Definition/Description
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
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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
Table 2. Product Specifications (Continued)
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
Specifications are subject to change without prior notice.
Note
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Introduction
2.4
MODELS DESCRIPTION
Table 3 lists the available g20 models.
Table 3. g20 Models
Model
2.5
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
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
2.7.1
SAFETY PRECAUTIONS
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:
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Introduction
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:
Ant
Serial
USB
Transmitter
IC
Control
Driver
Main
Processor
DSP
PCM
SIM
GPIO
SPI
ADC
Receiver
IC
Interface Connector
Memories
Audio
Power & Audio
Management IC
Charger
Power
On/Off / IGN
G20
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.
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Hardware Description
• 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
10
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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.
Ant
DTE
UART
USB
Memories
Transmitter
IC
Control
Main
Processor
DSP
Driver
PCM
SIM
GPIO
SPI
ADC
Receiver
IC
Interface Connector
Serial
SIM
Socket
Mic
SPKR
Audio
Power & Audio
Management IC
Charger
Power
Power
Supply
On/Off - IGN
G20
On/Off or
Ignition
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.
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Hardware Description
Ant
DTE
UART
USB
Memories
Transmitter
IC
Control
Driver
Main
Processor
DSP
PCM
SIM
GPIO
SPI
ADC
Receiver
IC
Interface Connector
Serial
DTE
DSP
SIM
Socket
Audio
Power & Audio
Management IC
Charger
Power
Supply
Power
On/Off / IGN
G20
On/Off or IGN
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).
Ant
USB
Driver
USB
Memories
Transmitter
IC
Control
Main
Processor
DSP
Driver
PCM
SIM
GPIO
SPI
Receiver
IC
ADC
Power & Audio
Management IC
Interface Connector
Serial
USB
Connector
SPI
Device
Audio
Charger
Power
G20
Figure 4. Additional g20 Connectivity
12
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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.
Ant
Display
Control
Transmitter
IC
Main
Processor
DSP
Display
Key Pad
SIM
Vibrator
Alert
Receiver
IC
Power & Audio
Management IC
Audio
Key Pad
Interface Connector
Memories
Charger
SIM
Socket
Vibrator
Alert
Mic
SPKR
Charger
Power
G20
Battery
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.
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Hardware Description
• 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.
TX
Transmit
Periods
TX
TX
VCC
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.
The power supply should be able to drive at least 2.5 A.
Note
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.
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
14
@ Power level #5 < 350 mA, Typical 270 mA
@ Power level #10, Typical 160 mA
@ Power level #19, Typical 135 mA
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Hardware Description
Table 4. g20 Current Consumption (Continued)
Mode
Current Consumption (mA RMS)
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
DRX2/9 is the rate used by the base station to query the mobile station. The network operator sets this parameter.
Note
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 200kΩ 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.
T1
T2
T3
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.
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Hardware Description
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 entering 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
16
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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.
DTE TXD
Wake up
In line
30 ms
30 ms
30 ms
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.
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Hardware Description
• 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.
RXD
Wake up Out
line
S10x ms
S10x ms
S10x ms
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 hardware 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
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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
A buffer is required whenever DTE levels do not match g20 levels.
Note
3.3.1.2
RS232 Connection
Figure 13 shows an RS232 connection diagram:
G20
DTE
TXD
RXD
21
11
RTS
G20 Main
Processor
CTS
DTR
DSR
DCD
RI
15
19
13
17
23
3 state
D+
USB
Driver
USB
Detect
DUSB VBUS
12
14
10
USB
connector
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.
In g20 models without a USB driver (F3001and F3002 models), RS232 signals can be used to connect an external
USB driver.
Note
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Hardware Description
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:
G20
DTE
TXD
RXD
RTS
G20 Main
Processor
CTS
DTR
DSR
DCD
RI
21
11
15
19
13
17
23
3 state
D+
USB
Detect
USB
Driver
DUSB VBUS
12
14
10
USB
connector
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.
The DTE UART loads the USB driver/main processor lines. Therefore, the UART should be kept in tri-state.
Note
20
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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:
*,QWHUIDFH
&RQQHFWRU
6,09&&
6,05HVHW
48
44
6,0&ORFN
SIM
Driver

6,03'


1-4
1uF
6.8V Zeners
with low
Capacitance
For ESD protection
6,0,B2
G20
6,0933 1&
*5281'
Figure 16. g20 SIM Connection
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Hardware Description
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
Developer’s 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 Developer’s 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
Table 5. SPI Pinout
Pin #
3.3.5
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
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
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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 KΩ or lower. The antenna must have a resistance
to ground of less than 100 KΩ. 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.
No GPRS Coverage
GPRS Coverage
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 entertainment 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.
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Hardware Description
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.
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
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
The measurements shown in Table 6 apply in the following configuration:
Figure 20. SPKR_N Output Configuration
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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 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
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
max
2900
900
Table 8 shows the SPKR_N output at different volume levels, when a 500mV RMS signal is transmitted from the network.
Table 8. SPKR_N Output when a 500mV RMS Signal is Transmitted
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SPKR_N
0 (lowest gain)
15
20
28
39
55
78
110
7 (highest gain)
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DRAFT 1 (31.3.03)
Hardware Description
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 9. SPKR_N Output when g20 is in Handset Mode
Handset Volume
SPKR_N
122
172
244
342
482
678
954
Table 10 shows the keypad tone levels generated by the g20 when in headset mode (meaning the handset-detect signal is pulled
low).
Table 10. SPKR_N Output when g20 is in Headset Mode
26
Handset Volume
SPKR_N
5.5
7.5
10.5
14
19.5
27.5
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Hardware Description
Table 11 shows the levels of the alert transducer measured on the ALERT_P signal at different ring volumes.
Table 11. Alert Transducer Levels for the ALERT_P Signal
3.4.1.3
Handset Volume
ALRT_P
107
153
206
305
424
600
850
1200
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.
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Hardware Description
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.
Table 12. Antenna Performance Recommendations
Frequencies:
GSM 850
GSM 900
DCS 1800
PCS 1900
3.6
TX
824 – 849 MHz
RX
869 – 893 MHz
TX
880 – 915 MHz
RX
925 – 960 MHz
TX
1710 – 1785 MHz
RX
1805 – 1880 MHz
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
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
Developer’s 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.
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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
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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
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)
PIN ASSIGNMENTS
The g20 interface is provided via a 70-pin connector. Table 13 describes the pin assignments for the g20 interface connector.
Table 13. g20 Interface Connector Pin Assignments
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
Models
with USB
Driver/
Alternate
Function
Power:
GND
Ground
GND
GND
Ground
GND
GND
Ground
GND
GND
Ground
GND
VCC
Power supply
DC
3.0
3.6
4.2
VCC
Power supply
DC
3.0
3.6
4.2
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Connector Pin Assignments
Table 13. g20 Interface Connector Pin Assignments (Continued)
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
Models
with USB
Driver/
Alternate
Function
VCC
Power supply
DC
3.0
3.6
4.2
VCC
Power supply
DC
3.0
3.6
4.2
16
WAKEUP_IN
Wakeup input
Logic
2.775
26
WAKEUP_
OUT
Wakeup
output
Logic
2.775
25
RESET
Reset signal
output
Logic
2.775
53
ON_OFF
On/off switch
DC
3.0
3.6
4.2
51
IGN
Ignition input
Logic
2.775
3.6
16
39
TX_EN
GSM transmit
indicator
Logic
2.775
41
ANT_DET
Antennapresence
detect
Logic
2.775
49
GPRS_DET
GPRS
coverage
indicator
Logic
2.775
37
ENT_MUTE
Entertainment
mute
Logic
2.775
21
TXD
RS232 TXD
Logic
2.775
USB VMIN
11
RXD
RS232 RXD
Logic
2.775
USB
VPOUT
RTS
RS232 RTS
Logic
2.775
USB XRXD
15
CTS
RS232 CTS
Logic
2.775
USB
VMOUT
19
DTR
RS232 DTR
Logic
2.775
USB VPIN
GPIO:
UART:
32
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DRAFT 1 (31.3.03)
Connector Pin Assignments
Table 13. g20 Interface Connector Pin Assignments (Continued)
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
Models
with USB
Driver/
Alternate
Function
13
DSR
RS232 DSR
Logic
2.775
USB
TXENB
17
DCD
RS232 DCD
Logic
2.775
USB
SUSPEND
23
RI
RS232 RI
Logic
2.775
USB
SOFTCON
10
USB_DET
USBconnection
detect
DC
USB_
VBUS
12
Not
connected
USB_D+
14
Not
connected
USB_D-
USB:
4.4
5.25
SPI:
70
SPI_CS
SPI chipselect
Logic
2.775
62
SPI_IRQ
SPI interrupt
Logic
2.775
64
SPI_DIN
SPI MISO
input
Logic
2.775
68
SPI_DOUT
SPI MOSI
output
Logic
2.775
66
SPI_CLK
SPI clock
Logic
2.775
2.775
SIM Card:
50
SIM_PD
SIMpresence
detect
Logic
48
SIM_VCC
SIM VCC
DC
1.8
44
SIM_RST
SIM reset
Logic
1.8
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Connector Pin Assignments
Table 13. g20 Interface Connector Pin Assignments (Continued)
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
52
SIM_DIO
SIM serial
data
I/O
Logic
1.8
46
SIM_CLK
SIM clock
Logic
1.8
Models
with USB
Driver/
Alternate
Function
PCM Audio:
18
PCM_DIN
Digital audio
receive
Logic
2.775
20
PCM_DOUT
Digital audio
transmit
Logic
2.775
22
PCM_CLK
Digital audio
clock
Logic
2.775
24
PCM_FS
Digital audio
frame sync
Logic
2.775
54
LCD_CS
Display chipselect
Logic
2.775
60
LCD_RS
Display
register-select
Logic
2.775
56
LCD_DATA
Display serial
data
Logic
2.775
58
LCD_CLK
Display serial
clock
Logic
2.775
30
KBC0
Keypad
column 0
Logic
2.775
28
KBC1
Keypad
column 1
Logic
2.775
32
KBR0
Keypad row 0
Logic
2.775
34
KBR1
Keypad row 1
Logic
2.775
36
KBR2
Keypad row 2
Logic
2.775
Display:
Keypad:
34
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Connector Pin Assignments
Table 13. g20 Interface Connector Pin Assignments (Continued)
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
38
KBR3
Keypad row 3
Logic
2.775
40
KBR4
Keypad row 4
Logic
2.775
42
KBR5
Keypad row 5
Logic
2.775
67
SPKR_N
Speaker
inverted
Audio
69
SPKR_P
Speaker
Audio
63
ALRT_N
Alert speaker
inverted
Logic
65
ALRT_P
Alert speaker
Audio
61
MIC
Microphone
input
Audio
59
MIC_GND
Microphone
ground What
goes in I/O
column for
this pin?
GND
57
HDST_MIC
Headset
microphone
Audio
55
HDST_INT
Headsetdetect
interrupt
Logic
2.775
35
CHRG_DET
Chargerpresence
detect
Logic
2.775
33
CHRG_
STATE
Charger rate
indicator
Logic
2.775
31
CHRG_SW
Accessory
current control
Logic
2.775
Models
with USB
Driver/
Alternate
Function
Audio:
Charger:
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DRAFT 1 (31.3.03)
Connector Pin Assignments
Table 13. g20 Interface Connector Pin Assignments (Continued)
Level
Pin #
Signal Name
Description
I/O
Signal
Min
Typ
Max
Units
CHRG_DIS
Charger
disable
Logic
45
CHRG_TYP
Accessorytype detect
Logic
2.775
47
THERM
Temperature
measurement
Logic
2.775
100
mA
29
2.775
Models
with USB
Driver/
Alternate
Function
ADC:
Miscellaneous:
36
27
BL_SINK
Backlight
current sink
DC
80
43
VIB_OUT
Vibrator
regulator
DC
1.3
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DRAFT 1 (31.3.03)
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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DRAFT 1 (31.3.03)
Mechanical Description
38
98-08901C64-O
DRAFT 1 (31.3.03)
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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DRAFT 1 (31.3.03)
Service Support
40
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DRAFT 1 (31.3.03)
7. INDEX
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DRAFT 1 (31.3.03)
Index
42
98-08901C64-O

---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.4
Linearized                      : No
Create Date                     : 2003:03:31 16:58:42Z
Modify Date                     : 2003:05:23 14:36:53-03:00
Page Count                      : 48
Has XFA                         : No
Creation Date                   : 2003:03:31 16:58:42Z
Producer                        : Acrobat Distiller 4.0 for Windows
Mod Date                        : 2003:05:23 14:36:53-03:00
Author                          : Motorola Communications Ltd.
Metadata Date                   : 2003:05:23 14:36:53-03:00
Title                           : g20 Cellular Engine Module Description
Creator                         : Motorola Communications Ltd.

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