User Manual
Table Of Contents
- 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 / Preliminary
s
XT55/56_hd_v02.96 Page 8 of 125 18.08.2005
0 Document History
Preceding document: "XT55/56 Hardware Interface Description" Version 02.94
New document: "XT55/56 Hardware Interface Description" Version 02.96
Chapter What is new
1.4 Deleted section “Compliance with international rules and regulations”.
3.3.1.1 Added further details of timing after power-up.
3.6.2, 0,
3.6.5.1
More detailed description of RTS wake-up.
3.12.2.2 Some text changes related to LED behavior in CYCLIC SLEEP mode.
8.2, 8.3 Deleted note on extra FCC certification for OEM products. Changed note on
recommendations for mobile and fixed devices. Added FCC labeling requirements.
Preceding document: "XT55/56 Hardware Interface Description" Version 02.06c
New document: "XT55/56 Hardware Interface Description" Version 02.94
Chapter What is new
Throughout
document
Updated module images.
1.4 Added European Directives related to RoHS and WEEE. Updated version numbers
of several standards.
3.5.3 Described charging procedure if battery was deeply discharged.
3.12.3 Same description of RING line behavior for voice, data, fax.
7.2 Deleted screw and washer restrictions for mounting holes of XT55/56.
7.1 Updated figure “Mechanical dimensions of XT55/56”.
10 Siemens ordering numbers changed.
Preceding document: "XT55/56 Hardware Interface Description" Version 02.06b
New document: "XT55/56 Hardware Interface Description" Version 02.06c
Chapter What is new
1.1 New chapter: Supported Software and Hardware Releases
2.1 New temperature range of GPS part: -25°C to +55°C.
2.2 Corrected GPS processor speed.
4.2 GPS receiver sensitivity has been changed from –138dBm to –142dBm + 2dB.
10 Updated Siemens ordering numbers of the XT55/56 modules.
Preceding document: "XT55/56 Hardware Interface Description" Version 02.06a
New document: "XT55/56 Hardware Interface Description" Version 02.06b
Chapter What is new
4.2 XT55/56 is now supporting the ZDA protocol
8.3 Modified chapter, deleted note on required FCC certification for OEMs, antenna
value has been changes from 1.4dBi to 2.2dBI (GSM 850)