Specifications

Wireless ModemModule GSM/GPRS Developer’s Guide 3
Table of Contents
CHAPTER 1 – PRODUCT DESCRIPTION AND SPECIFICATIONS ................................................................5
INTRODUCTION ...........................................................................................................................................................5
Scope of the Developer Guide ................................................................................................................................5
AT Command Info ..................................................................................................................................................5
GENERAL CHARACTERISTICS......................................................................................................................................6
General...................................................................................................................................................................6
Electrical ................................................................................................................................................................6
Mechanical .............................................................................................................................................................6
FEATURE DETAILS ......................................................................................................................................................6
Telephony ...............................................................................................................................................................6
Short Message Service (GSM and GPRS mode).....................................................................................................6
GSM Circuit Data Features ...................................................................................................................................7
GPRS Packet Data Features ..................................................................................................................................7
GSM Supplementary Services.................................................................................................................................7
Other Features .......................................................................................................................................................7
Interfaces................................................................................................................................................................7
FEATURE DESCRIPTIONS .............................................................................................................................................8
APPLICATIONS ............................................................................................................................................................9
MECHANICAL DESIGN OVERVIEW ............................................................................................................................10
CHAPTER 2 – MECHANICAL SPECIFICATIONS............................................................................................11
MECHANICAL DIMENSIONS.......................................................................................................................................11
CLIMATIC AND MECHANICAL ENVIRONMENT TESTING COMPLIANCE ......................................................................12
CHAPTER 3 – ELECTRICAL CHARACTERISTICS.........................................................................................13
INTRODUCTION .........................................................................................................................................................13
50-PIN CONNECTOR INTERFACES..............................................................................................................................14
50-Pin Connector Description..............................................................................................................................14
Power Supply........................................................................................................................................................17
Serial Link ............................................................................................................................................................19
ON / ~OFF Interface............................................................................................................................................20
BOOT ...................................................................................................................................................................22
Reset Signal (~RST)..............................................................................................................................................22
Flashing LED .......................................................................................................................................................23
General Purpose Input/Output .............................................................................................................................24
Analog to Digital Converter.................................................................................................................................24
Audio Interface.....................................................................................................................................................25
SIM interface ........................................................................................................................................................29
SIM Schematic (5V)..............................................................................................................................................30
SPI Bus .................................................................................................................................................................32
Keypad Interface ..................................................................................................................................................32
CHAPTER 4 – INTERFACES .................................................................................................................................33
FLASHING LED.........................................................................................................................................................33
SIM INTERFACE........................................................................................................................................................33
RF INTERFACE..........................................................................................................................................................34
RF Connector .......................................................................................................................................................34
RF Performances..................................................................................................................................................34
DTE/DCE INTERFACE RATES...................................................................................................................................34
CHAPTER 5 – TEST BOARD .................................................................................................................................35
SERIAL TEST/DEMO BOARD COMPONENTS...............................................................................................................35
SERIAL TEST/DEMO BOARD BLOCK DIAGRAM .........................................................................................................36