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Multiplexer Driver Developer’s Guide

Contents

Mux_Drv_DevGuide_v07 Page 3 of 36 2006-9-27

Confidential / Released

Contents

0 Document History.................................................................................................................................... 7

1 Introduction.............................................................................................................................................. 9

1.1 Supported Product Versions ......................................................................................................... 10

1.2 Related Documents....................................................................................................................... 11

1.3 Abbreviations................................................................................................................................. 11

2 Architecture............................................................................................................................................ 12

2.1 Hierarchy Chart in the System ...................................................................................................... 12

2.2 Handling of the Physical Serial Port.............................................................................................. 13

2.3 Module Detection .......................................................................................................................... 13

2.4 Handling of Control Lines on Virtual Ports .................................................................................... 14

2.5 Limitation of Virtual Ports .............................................................................................................. 14

2.6 Module Initializing Sequence......................................................................................................... 15

2.7 Module Re-initialization ................................................................................................................. 16

2.8 Power Down.................................................................................................................................. 16

2.8.1 Power Down on PC Suspend ........................................................................................ 16

2.8.2 Power Down after Closing the Last Port........................................................................ 16

2.8.3 Power Down on PC Shutdown ...................................................................................... 17

3 Installation.............................................................................................................................................. 18

3.1 Files Required for WinMux2k Driver Installation ........................................................................... 18

3.2 Installing the WinMux2k Driver...................................................................................................... 18

3.3 Deinstalling the Driver ................................................................................................................... 19

4 Device Settings and Properties............................................................................................................ 20

4.1 Settings on the Serial Multiplexer Properties Page....................................................................... 20

4.2 Settings Stored in the Windows Registry ......................................................................................21

5 Settings for Applications ...................................................................................................................... 25

5.1 Dial-up Network Settings............................................................................................................... 25

5.2 Fax Settings .................................................................................................................................. 25

6 Translate Source Code.......................................................................................................................... 26

6.1 Software Requirements................................................................................................................. 26

6.2 Preparing the Translation.............................................................................................................. 26

6.3 Compiler Flags .............................................................................................................................. 26

7 Additional Source Documentation....................................................................................................... 27

7.1 Interaction of the Different Driver Objects ..................................................................................... 27

7.2 Internal Driver States..................................................................................................................... 28

7.3 Buffer Handling.............................................................................................................................. 29

7.4 Data Transfer ................................................................................................................................ 30

7.4.1 Block Flow Diagram for Data Received by the Module ................................................. 30

7.4.2 Block Flow Diagram for Data Sent to the Module via Virtual Port ................................. 31

7.4.3 SerMuxSend Function ................................................................................................... 32

7.5 The +++-Parser............................................................................................................................. 34

8 Known Problems ................................................................................................................................... 35

8.1 Booting Operating System ............................................................................................................ 35

1 2 3 4 5 6 7 8 ... 35 36

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