User's Manual

XT55/56 Hardware Interface Description
Confidential / Released
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XT55/56_hd_v02.06a Page 7 of 125 17.12.2004
Figure 53: Recommended dowel ......................................................................................... 113
Figure 54: Mechanical dimensions of Hirose DF12 connector............................................. 115
Figure 55: Reference equipment for approval...................................................................... 116
Figure 56: Block diagram of XT55/56 for SiRF Demo application........................................ 119
Figure 57: Block diagram of XT55/56 with AVL application (optional) ................................. 120
Figure 58: XT55/56 tracking phone with external µC (example application) ........................ 121
Tables
Table 1: XT55/56 key features ............................................................................................... 21
Table 2: GSM coding schemes and maximum net data rates over air interface.................... 23
Table 3: Overview of GSM/GPRS operating modes .............................................................. 26
Table 4: Power supply pins of board-to-board connector....................................................... 28
Table 5: AT commands available in Alarm mode................................................................... 33
Table 6: Temperature dependent behavior ............................................................................ 38
Table 7: Bill of material for external charging circuit............................................................... 42
Table 8: Specifications of recommended battery pack........................................................... 44
Table 9: Comparison Charge-only and Charge mode............................................................46
Table 10: AT commands available in Charge-only mode.......................................................47
Table 11: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes.............................51
Table 12: State transitions of XT55/56 (except SLEEP mode) .............................................. 53
Table 13: DCE-DTE wiring of 1st serial interface (GSM part) ................................................ 56
Table 14: DCE-DTE wiring of 2nd serial interface (GSM part)............................................... 56
Table 15: Signals of the SIM interface (board-to-board connector) ....................................... 61
Table 16: Pin assignment of Molex SIM card holder on DSB45 Support Box........................ 63
Table 17: Input control signals of the GSM part of the XT55/56 module................................ 64
Table 18: Coding of the status LED ....................................................................................... 66
Table 19: ASC0 ring signal.....................................................................................................69
Table 20: Return loss .............................................................................................................80
Table 21: Product specifications of U.FL-R-SMT connector .................................................. 83
Table 22: Material and finish of U.FL-R-SMT connector and recommended plugs ...............84
Table 23: Ordering information for Hirose U.FL Series .......................................................... 86
Table 24: Absolute maximum ratings (GSM part) .................................................................. 87
Table 25: Absolute maximum rating (GPS part)..................................................................... 87
Table 26: Operating temperatures ......................................................................................... 87
Table 27: Electrical description of application interface ......................................................... 90
Table 28: Power supply ratings (GSM part) ...........................................................................95
Table 29: Power supply ratings (GPS part)............................................................................ 96
Table 30: Audio parameters adjustable by AT command .................................................... 102
Table 31: Voiceband characteristics (typical).......................................................................104
Table 32: Voiceband receive path........................................................................................105
Table 33: Voiceband transmit path....................................................................................... 106
Table 34: Air Interface ..........................................................................................................107
Table 35: Measured electrostatic values..............................................................................108
Table 36: Summary of reliability test conditions ................................................................... 109
Table 37: Ordering information DF12 series ........................................................................114
Table 38: Electrical and mechanical characteristics of the Hirose DF12C connector ..........114
Table 39: List of parts and accessories................................................................................ 123
Table 40: Molex sales contacts (subject to change) ............................................................125
Table 41: Hirose sales contacts (subject to change)............................................................125