GR47/GR48 Technical description
GBBA/SEM/BMS 03:0001 Rev A3
Contents
1INTRODUCTION ...........................................................................................................5
1.1 OVERVIEW ...............................................................................................................5
1.2 FEATURES ...............................................................................................................6
1.2.1 Type of Mobile Station ......................................................................................6
1.2.2 SMS ................................................................................................................7
1.2.3 Voice calls .......................................................................................................7
1.2.4 Data ................................................................................................................7
1.2.5 SIM Card .........................................................................................................8
1.2.6 Power consumption ..........................................................................................8
1.2.7 Other features ..................................................................................................8
1.2.8 Development Kit...............................................................................................8
1.3 PRECAUTIONS ..........................................................................................................9
1.4 ABBREVIATIONS ........................................................................................................9
2MECHANICAL DESCRIPTION ....................................................................................11
2.1 INTERFACE DESCRIPTION .........................................................................................11
2.2 PHYSICAL DIMENSIONS ............................................................................................12
3SYSTEM CONNECTOR INTERFACE ..........................................................................13
3.1 OVERVIEW .............................................................................................................13
3.2 GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS................................................16
3.2.1 General Protection Requirements....................................................................17
3.3 GROUNDS ..............................................................................................................18
3.3.1 The Analogue Ground.....................................................................................18
3.3.2 The Digital Ground (DGND) ............................................................................18
3.4 REGULATED POWER SUPPLY ....................................................................................19
3.4.1 Power Supply (VCC).......................................................................................19
3.4.2 Battery Charging Input (CHG_IN) ....................................................................19
3.5 ON/OFFAND EXTERNAL POWER SIGNALS..................................................................20
3.5.1 Module ON/OFF.............................................................................................20
3.5.2 External 2.75 V (VIO)......................................................................................21
3.6 ANALOGUE AUDIO ...................................................................................................22
3.6.1 Audio To Mobile Station (ATMS)......................................................................22
3.6.2 Audio From Mobile Station (AFMS)..................................................................24
3.7 MICROPHONE SIGNALS ............................................................................................24
3.8 SPEAKER SIGNALS ..................................................................................................25
3.9 DIGITAL AUDIO........................................................................................................25
3.10 SERIAL DATA ......................................................................................................27
3.10.1 UART 1 (RS232) -RD, TD, RTS, CTS, DTR, DCD, DSR and RI........................29
3.10.2 Serial Data Signals -RD, TD...........................................................................29
3.10.3 Control Signals -RTS, CTS, DTR, DCD, RI, DSR.............................................30
3.10.4 UART 2 -TD2, RD2........................................................................................32
3.10.5 UART 3 -TD3, RD3........................................................................................32
3.11 SIM CARD RELATED SIGNALS.................................................................................33
3.11.1 SIM Detection –SIM Presence........................................................................34
3.12 SERVICE/PROGRAMMING ......................................................................................34
3.13 BUZZER..............................................................................................................35
3.14 LED..................................................................................................................35
3.15 TX_ON -BURST TRANSMISSION............................................................................36
3.16 REAL TIME CLOCK ...............................................................................................36
3.17 EXTENDED IO CAPABILITIES...................................................................................37
3.17.1 LED/IO6.........................................................................................................37
3.17.2 I#/O# .............................................................................................................37
