Manuels d'utilisation pour Siemens Mux_guide_v06

Table des matières

• Contents

  3
• Figures

  4
• Tables

  4
• Document history

  5
• Introduction

  6
  • Supported products and related documents

    7
  • References

    7
  • Term and abbreviations

    8
• Multiplexer protocol – an overview

  9
  • Product concept and architecture

    9
  • Virtual channels and AT commands

    10
• Integrating multiplexer into the customer application

  11
  • Characteristics

    11
    • Basic requirements

      11
    • Restrictions

      11
    • Dependencies between multiplexer channels and restrictions of use

      12
    • Functions without channel dependencies

      12
    • Timing conditions

      13
    • Operation of a second physical serial interface ASC1 (if applicable)

      13
  • Multiplexer control and signaling lines

    14
    • Flow control

      14
    • Escape sequence

      16
  • Power saving

    16
  • Bandwidth of logical channels

    16
• Structure of the multiplexer protocol

  17
  • Introduction of the multiplexer protocol

    17
  • Data link layer

    17
    • Flag sequence

      18
    • Address field

      18
    • Control field

      19
    • Length indicator

      20
    • Information field

      20
    • Frame checking sequence field (FCS)

      20
  • State diagrams

    21
    • Start-up procedure

      25
    • DLC establishment

      25
    • Information transfer

      25
    • DLC release

      26
    • Close-down procedure

      26
    • Multiplexer control channel

      26
    • Multiplexer close down (CLD)

      27
    • Test command (Test)

      27
    • Modem status command (MSC)

      28
    • Power saving control (PSC)

      30
    • Non-supported command response (NSC)

      31
  • Example: Establishing logical channels without parameter negotiation

    32
• Multiplexer protocol version control

  33
  • Introduction

    33
  • Multiplexer protocol versions

    34
  • Implementing version control

    35
    • Troubleshooting

      35
    • Coding of “TestCommand” message

      36
    • Example of “TestCommand” message

      36