User Manual

XT55/56 Hardware Interface Description
Confidential / Preliminary
s
XT55/56_hd_v02.96 Page 6 of 125 18.08.2005
Figure 33: Never use antenna connector and antenna pad at the same time ....................... 82
Figure 34: Restricted area around antenna pad..................................................................... 82
Figure 35: GPS antenna connector (U.FL-R-SMT connector) ...............................................83
Figure 36: Mechanical dimensions of U.FL-R-SMT connector...............................................84
Figure 37: U.FL-R-SMT connector with U.FL-LP-040 plug ....................................................85
Figure 38: U.FL-R-SMT connector with U.FL-LP-066 plug ....................................................85
Figure 39: Specifications of U.FL-LP-(V)-040(01) plug .......................................................... 86
Figure 40: Pin assignment (top view on XT55/56) ................................................................. 90
Figure 41: Typical current consumption vs. return loss in EGSM 900 network......................98
Figure 42: Typical current consumption vs. return loss in GSM 1800 network ......................99
Figure 43: Typical current consumption vs. return loss in GSM 1900 network ......................99
Figure 44: Peak current consumption during transmit burst in EGSM 900 network.............100
Figure 45: Peak current consumption during transmit burst in GSM 1800 network ............. 100
Figure 46: Peak current consumption during transmit burst in GSM 1900 network ............. 101
Figure 47: Typical current consumption vs. return loss........................................................ 102
Figure 48: AT audio programming model............................................................................. 104
Figure 49: XT55/56 – top view .............................................................................................111
Figure 50: XT55/56 bottom view .......................................................................................... 111
Figure 51: Mechanical dimensions of XT55/56 .................................................................... 112
Figure 52: Mounting holes on XT55/56 ................................................................................ 113
Figure 53: Recommended dowel ......................................................................................... 114
Figure 54: Mechanical dimensions of Hirose DF12 connector............................................. 116
Figure 55: Reference equipment for approval...................................................................... 117
Figure 56: Block diagram of XT55/56 for SiRF Demo application........................................ 120
Figure 57: Block diagram of XT55/56 with AVL application (optional) .................................121
Figure 58: XT55/56 tracking phone with external µC (example application) ........................122
Tables
Table 1: XT55/56 key features ............................................................................................... 22
Table 2: GSM coding schemes and maximum net data rates over air interface.................... 24
Table 3: Overview of GSM/GPRS operating modes .............................................................. 27
Table 4: Power supply pins of board-to-board connector....................................................... 29
Table 5: AT commands available in Alarm mode................................................................... 35
Table 6: Temperature dependent behavior ............................................................................ 39
Table 7: Bill of material for external charging circuit............................................................... 43
Table 8: Specifications of recommended battery pack........................................................... 45
Table 9: Comparison Charge-only and Charge mode............................................................48
Table 10: AT commands available in Charge-only mode.......................................................49
Table 11: Wake-up events in NON-CYCLIC and CYCLIC SLEEP modes.............................53
Table 12: State transitions of XT55/56 (except SLEEP mode) .............................................. 55
Table 13: DCE-DTE wiring of 1st serial interface (GSM part) ................................................58
Table 14: DCE-DTE wiring of 2nd serial interface (GSM part)...............................................58
Table 15: Signals of the SIM interface (board-to-board connector) ....................................... 63
Table 16: Pin assignment of Molex SIM card holder on DSB45 Support Box........................65
Table 17: Input control signals of the GSM part of the XT55/56 module................................ 66
Table 18: Coding of the status LED .......................................................................................68
Table 19: ASC0 ring signal.....................................................................................................70
Table 20: Return loss .............................................................................................................81
Table 21: Product specifications of U.FL-R-SMT connector .................................................. 84
Table 22: Material and finish of U.FL-R-SMT connector and recommended plugs ...............85
Table 23: Ordering information for Hirose U.FL Series .......................................................... 87
Table 24: Absolute maximum ratings (GSM part) .................................................................. 88
Table 25: Absolute maximum rating (GPS part).....................................................................88