Benutzerhandbuch für Gemalto M2M GmbH XT56

Inhaltsverzeichnis

• Contents

  3
• Figures

  6
• Tables

  7
• Document history

  8
• Introduction

  11
  • Related documents

    11
  • Terms and abbreviations

    12
  • Type approval

    16
  • Safety precautions

    18
• Product concept

  20
  • XT55/56 key features at a glance

    21
  • Circuit concept

    24
• GSM application interface

  26
  • GSM/GPRS operating modes

    26
  • Power supply

    28
    • Power supply pins on the board-to-board connector

      28
    • Minimizing power losses

      29
    • Monitoring power supply

      29
  • Power up / down scenarios

    30
    • Turn on the GSM part of XT55/56

      30
      • Turn on the GSM part of XT55/56 using the ignition line GSM_

        31
      • Timing of the ignition process

        32
      • Turn on the GSM part of XT55/56 using the GSM_POWER signal

        33
      • Turn on the GSM part of XT55/56 using the RTC (Alarm mode)

        33
    • Turn off the GSM part of XT55/56

      35
      • Turn off GSM part of the XT55/56 module using AT command

        35
      • Emergency shutdown using GSM_EMERGOFF pin

        36
    • Automatic shutdown

      37
      • Temperature dependent shutdown

        37
      • Temperature control during emergency call

        38
      • Undervoltage shutdown if battery NTC is present

        38
      • Undervoltage shutdown if no battery NTC is present

        39
      • Overvoltage shutdown

        39
  • Automatic GPRS Multislot Class change

    40
  • Charging control of the GSM part

    41
    • Battery pack characteristics

      43
    • Recommended battery pack specification

      44
    • Implemented charging technique

      45
    • Operating modes during charging

      46
    • Charger requirements

      47
  • Power saving

    48
    • No power saving (AT+CFUN=1)

      48
    • NON-CYCLIC SLEEP mode (AT+CFUN=0)

      48
    • CYCLIC SLEEP mode (AT+CFUN=5, 6, 7, 8)

      48
    • CYCLIC SLEEP mode AT+CFUN=9

      49
    • Timing of the GSM_CTS signal in CYCLIC SLEEP modes

      49
    • Wake up XT55/56 from SLEEP mode

      51
  • Summary of state transitions (except SLEEP mode)

    53
  • RTC backup for GSM part of XT55/56

    54
  • Serial interfaces of the XT55/56 GSM part

    55
    • Features supported on the first serial interface of GSM part

      55
    • Features supported on the second serial interface of GSM par

      56
    • ASC0 and ASC1 configuration

      56
  • Audio interfaces

    57
    • Microphone circuit

      58
    • Speech processing

      59
    • DAI timing

      59
  • SIM interface

    61
    • Requirements for using the GSM_CCIN pin

      62
    • Design considerations for SIM card holder

      63
  • Control signals

    64
    • Inputs

      64
    • Outputs

      65
      • Synchronization signal

        65
      • Using the GSM_SYNC pin to control a status LED

        66
    • Behavior of the GSM_RING0 line (ASC0 interface only)

      68
• GPS application interface

  70
  • Theory of operation

    70
  • Technical data

    71
  • GPS operating modes

    72
    • Trickle Power mode

      73
    • Comparison of Trickle Power and Push-to-Fix mode

      74
  • Power supply of the XT55/56 GPS part

    75
  • General purpose input/output

    75
  • Serial interfaces of the XT55/56 GPS part

    76
  • GPS control signals

    76
  • Receiver architecture

    77
  • Operation procedure

    78
  • Start-up procedures

    79
    • Coldstart

      79
    • Warmstart

      79
    • Hotstart

      79
• GSM and GPS antenna interfaces

  80
  • GSM antenna installation

    80
    • GSM antenna connector

      80
    • GSM antenna pad

      82
  • Installing the GPS antenna

    82
  • Hirose antenna connector

    83
• Electrical, reliability and radio characteristics

  87
  • Absolute maximum ratings

    87
  • Operating temperatures

    87
  • Pin description

    89
  • Power supply ratings

    95
    • Current consumption during GSM transmit burst

      97
  • Electrical characteristics of the voiceband part

    102
    • Setting audio parameters by AT commands

      102
    • Audio programming model

      103
    • Characteristics of audio modes

      104
    • Voiceband receive path

      105
    • Voiceband transmit path

      106
  • Air interface of the XT55/56 GSM part

    107
  • Electrostatic discharge

    108
  • Reliability characteristics

    109
• Mechanics

  110
  • Mechanical dimensions of XT55/56

    110
  • Mounting XT55/56 onto the application platform

    112
  • Board-to-board connector

    114
• Reference approval

  116
  • Reference equipment for type approval

    116
  • Compliance with FCC Rules and Regulations (XT55 only)

    117
  • Compliance with FCC Rules and Regulations (XT56 only)

    118
• Example applications

  119
• List of parts and accessories

  123