User's Manual
Table Of Contents
- Contents
- Figures
- Tables
- Document history
- Introduction
- Product concept
- GSM application interface
- GSM/GPRS operating modes
- Power supply
- Power up / down scenarios
- Automatic GPRS Multislot Class change
- Charging control of the GSM part
- Power saving
- Summary of state transitions (except SLEEP mode)
- RTC backup for GSM part of XT55/56
- Serial interfaces of the XT55/56 GSM part
- Audio interfaces
- SIM interface
- Control signals
- GPS application interface
- GSM and GPS antenna interfaces
- Electrical, reliability and radio characteristics
- Mechanics
- Reference approval
- Example applications
- List of parts and accessories
XT55/56 Hardware Interface Description
Confidential / Released
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XT55/56_hd_v02.06a Page 5 of 125 17.12.2004
6.5.4 Voiceband receive path .......................................................................105
6.5.5 Voiceband transmit path ......................................................................106
6.6 Air interface of the XT55/56 GSM part...............................................................107
6.7 Electrostatic discharge.......................................................................................108
6.8 Reliability characteristics ...................................................................................109
7 Mechanics..................................................................................................................110
7.1 Mechanical dimensions of XT55/56...................................................................110
7.2 Mounting XT55/56 onto the application platform ...............................................112
7.3 Board-to-board connector..................................................................................114
8 Reference approval...................................................................................................116
8.1 Reference equipment for type approval.............................................................116
8.2 Compliance with FCC Rules and Regulations (XT55 only) ...............................117
8.3 Compliance with FCC Rules and Regulations (XT56 only) ...............................118
9 Example applications ...............................................................................................119
10 List of parts and accessories...................................................................................123