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DSB45 Development Support Box
Confidential / Released
Contents
0
Document history..........................................................................................................5
1
Introduction ...................................................................................................................6
1.1
Supported products ...............................................................................................6
1.2
Revision history of DSB45 Support Box ................................................................6
1.3
Related documents................................................................................................6
1.4
Scope of delivery ...................................................................................................7
1.5
Terms and abbreviations .......................................................................................8
2
Description of DSB45 interfaces .................................................................................9
2.1
DSB45 - system overview .....................................................................................9
2.2
Block diagram ......................................................................................................10
2.3
Placement of connectors, switches, LEDs, variable resistors .............................11
2.4
Overview of inner and outer interfaces ................................................................12
2.4.1
Summary of outer interfaces..................................................................12
2.4.2
Summary of inner interfaces ..................................................................13
2.5
Turn on / off the GSM module .............................................................................14
2.5.1
Non-locking ignition key X132................................................................14
2.5.2
Non-locking emergency-off / power-off key X131 ..................................14
2.5.3
Turn off the GSM module using the AT^SMSO command ....................14
2.6
SIM card interface X507 ......................................................................................15
2.7
Application interfaces...........................................................................................16
2.7.1
Internal application mode.......................................................................16
2.7.2
External application mode......................................................................17
2.7.3
Application interface 1 (COM1)..............................................................19
2.7.4
Application interface 2 (COM2)..............................................................20
2.7.5
Audio interfaces .....................................................................................21
2.7.5.1 Audio interface 1 (for handset).................................................21
2.7.5.2 Audio interface 2 (for handsfree operation) .............................22
2.7.5.3 Digital audio interface (DAI) .....................................................23
3
Power supply...............................................................................................................24
3.1
Power supply for DSB45 and GSM module.........................................................24
3.1.1
Module specific power supply settings...................................................25
3.1.2
Internal supply voltages .........................................................................26
3.1.3
Adjusting the V
3.1.3.1 Module specific limits of V
3.1.4
Power supply for GSM module from PSU or battery .............................28
3.1.5
Charging the battery ..............................................................................29
3.1.6
Real time clock (RTC) supply ................................................................29
4
Summary of switches, test points and LEDs ...........................................................30
4.1
Summary of all switches located on DSB45 ........................................................30
4.2
Test points on DSB45..........................................................................................32
4.3
Status LEDs on DSB45 .......................................................................................34
5
Connecting the GSM module to DSB45 ....................................................................35
5.1
Connecting the antenna.......................................................................................37
6
Technical data of DSB45 Development Support Box ..............................................38
6.1
Cable requirements .............................................................................................39
6.1.1
Length of data cables ............................................................................39
7
List of parts and accessories.....................................................................................40
8
Appendix: Circuit diagrams of DSB45 ......................................................................42
DSB45_HD_V05
supply voltage for the GSM module ......................27
Page 3 of 50
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(BATT+)...................................27
01.02.2008
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