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TABLE OF CONTENTS 

 
 

Section 

Paragraph  Title   

 

 

 

        Page 

 

                        Visual Index – Quick Reference 

 

 

 

 

 
1 General 

Information 

1-1 

1.1 Features 

1-1 

1.2 

 

 General 

Description 

 

     

1-1

 

1.3 

 

 Specifications 

 

      

1-2

 

 
2  

 

PCM-DSPIO Technical Reference   

 

 

2-1

 

2.1 

 

 Introduction 

 

      

2-1

 

2.2  

 

Serial I/O Address Selection   

 

 

 

2-1

 

2.3  

 

Serial Interrupt Selection  

 

 

 

 

2-2

 

2.4  

 

RS- 232 Mode Configuration  

 

 

 

2-2

 

2.5  

 

RS- 422 Mode Configuration  

 

 

 

2-3

 

2.6  

 

RS- 485 Mode Configuration  

 

 

 

2-5 

2.7  

 

SAE J1708 Mode Configuration  

 

 

 

2-7

 

2.8  

 

Parallel Port I/O Address 

Selection 

 

   

2-8 

2.9  

 

Parallel Port Direction Control  

 

 

 

2-9

 

2.10    

Parallel Port Interrupt Routing Selection  

 

 

2-9

 

2.11    

Parallel Port I/O Connector 

Pinout 

 

   

2-9

 

2.12 

 

 PC/104 

Bus 

Connectors 

 

    

2-10

 

2.13 

 

 Connector/Jumper 

Summary 

 

    

2-11 

 
APPENDIX 

 

 

Summary of Contents for PCM-DSPIO

Page 1: ...OPERATIONS MANUAL PCM DSPIO PCM J1708 WinSystems reserves the right to make changes in circuitry and specifications at any time without notice Copyright 1996 WinSystems All Rights Reserved...

Page 2: ...REVISION HISTORY P N 403 0247 000 ECO Number Date Code Revision ORIGINATED 960508 A 98 88 980826 A1 98 105 981117 A2 WinSystems The Embedded Systems Authority...

Page 3: ...ess Selection 2 1 2 3 Serial Interrupt Selection 2 2 2 4 RS 232 Mode Configuration 2 2 2 5 RS 422 Mode Configuration 2 3 2 6 RS 485 Mode Configuration 2 5 2 7 SAE J1708 Mode Configuration 2 7 2 8 Para...

Page 4: ...J3 CHANNEL 2 RS 485 J1708 CONFIGURATION JUMPER J5 J6 CHANNEL 1 RS 485 J1708 CONFIGURATION JUMPER J4 PARALLEL PORT I O CONNECTOR J8 PARALLEL PORT BI DIRECTIONAL MODE CONTROL JUMPER J9 SERIAL I O MAP SE...

Page 5: ...TION The PCM DSPIO is a small low cost add on module for PC 104 based systems that pro vides two PC compatible serial ports and a PC compatible parallel printer port Both serial channels come standard...

Page 6: ...ort requires 4 consecutive I O port addresses 1 3 2 Mechanical Dimensions 3 8 X 3 8 X 0 5 PC Board FR4 Epoxy Glass with 2 signal layers with screened component legend and plated through holes Jumpers...

Page 7: ...8 Appendix C contains the complete re print of the Startech 16C552 datasheet and is provided to the programmer as a source of in formation for all UART registers and parallel port register details 2 2...

Page 8: ...ard on both serial channels The two serial channels are terminated at J1 and a dual DB9 cable is available from WinSystems under part number CBL 173 1 The following illustrations show the correct jump...

Page 9: ...cations reserved for them The methodology in deter mining the correct resistor values is beyond the scope of this document but we recommend trial values of 100 Ohms in all three locations at the recei...

Page 10: ...o 3 o U1 Not Installed U3 Installed U4 Installed 1 o o 6 2 o o 7 3 o o 8 4 o o 9 5 o J2 J3 CH2 DB9 Jumper Positions Driver IC Status I O Connector Pin Defs N C TX TX N C GND RX RX N C N C 1 o 2 o 3 o...

Page 11: ...ed U6 Not Installed 1 o o 6 2 o o 7 3 o o 8 4 o o 9 5 o J5 J6 CH1 DB9 Jumper Positions Driver IC Status I O Connector Pin Defs N C TX RX TX RX N C GND TX RX TX RX N C N C 1 o 2 o 3 o 1 o 2 o 3 o RS 48...

Page 12: ...nly one station may transmit or have its transmitter en abled at a time The transmitter En able Disable is controlled by Bit 1 in the Modem Control register RTS When set the transmitter is enabled whe...

Page 13: ...tering components The following illustrations show the correct jumpering driver IC installation DB9 I O con nector pin definitions and termination network details for each of the channels when used in...

Page 14: ...es Page 2 8 PCM DSPIO J1708 OPERATIONS MANUAL 981117 WinSystems The Embedded Systems Authority U1 Not Installed U3 Installed U4 Not Installed 1 o o 6 2 o o 7 3 o o 8 4 o o 9 5 o J2 J3 CH2 DB9 Jumper P...

Page 15: ...he bus using a jumper wire from pin 19 on J7 to the desired bus interrupt The pin definitions for the J7 interrupt routing header are shown below 2 11 Parallel Port I O Connector Pinout The parallel p...

Page 16: ...B14 o o A14 B15 o o A15 B16 o o A16 B17 o o A17 B18 o o A18 B19 o o A19 B20 o o A20 B21 o o A21 B22 o o A22 B23 o o A23 B24 o o A24 B25 o o A25 B26 o o A26 B27 o o A27 B28 o o A28 B29 o o A29 B30 o o...

Page 17: ...Channel 1 RS 485 J1708 configuration jumper 2 3 J6 Channel 1 RS 485 J1708 configuration jumper 2 3 J7 Interrupt routing header 2 2 J8 Parallel Port Bi directional mode control jumper 2 9 J9 Serial I...

Page 18: ...NTIC pdf Cables Software Simple C routine that uses receive interrupt 8250INTA ZIP Part Number Description CBL 101 3 26 pin ribbon to 25 pin male D connector parallel adapter cable CBL 173 1 20 pin ri...

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