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
s
XT55/56_hd_v02.06a Page 8 of 125 17.12.2004
0 Document history
Preceding document: "XT55 Hardware Interface Description" Version 02.06
New document: "XT55/56 Hardware Interface Description" Version 02.06a
Chapter What is new
Throughout the
document
Added XT56.
4.4 Notes about power supply of RTC and SRAM of GPS part.
5.3 Table 23: Corrected Hirose part number U.FL-LP-068.
10 Added Siemens ordering number for module XT56.
Preceding document: "XT55 Hardware Interface Description" Version 01.06
New document: "XT55 Hardware Interface Description" Version 02.06
Chapter What is new
Throughout the
document
Deleted remarks regarding TCP/IP software which is currently not supported.
1.1 Updated list of related documents.
Preceding document: "XT55 Hardware Interface Description" Version 01.00b
New document: "XT55 Hardware Interface Description" Version 01.06
Chapter What is new
1.3 Updated list of standards.
2.1, 4.2 SDn1, SDn2: both GPS interfaces support baud rates from 4800 … 115200 bps
3.6, 3.12.2 More detailed description of status LED patterns
3.11, 3.11.2
• Use GSM_CCGND line to shield GSM_CCIO line from GSM_CCCLK line.
• Connect a 47 pF capacitor from the GSM_CCIO to the GSM_CCGND line.
3.11.2 Improved Figure 19
4.2 GPS receiver sensitivity has been changed from –142 dBm to –138 dBm
4.7 GPS_RFPC0 and GPS_RFPC1 must be connected as shown in Figure 58 in order
to use the Trickle Power mode, deleted GPS_GPIO9 (T_MARK)
6.4 Added footnote regarding test conditions
6.5.3 Table 31: Sidetone gain at default settings for audio mode 5 and 6 set to - dB
7.2 Figure 53: Improved figure
8.2 Added IC: 267W-XT55/56
9 Figure 58:
• Two pull-up resistors must be added in order to ensure the correct voltage level
during start-up and reset procedure of the GPS base-band processor
• Added 47 pF capacitor
10 Added new Siemens ordering numbers