User manual

Table of Contents
PC-DIO-96/PnP User Manual vi © National Instruments Corporation
Digital I/O Signal Connections .....................................................................................3-7
Power Connections ........................................................................................................3-9
Digital I/O Power-up State Selection ............................................................................3-9
High DIO Power-up State ...............................................................................3-9
Low DIO Power-up State ...............................................................................3-11
Timing Specifications ...................................................................................................3-12
Mode 1 Input Timing ......................................................................................3-14
Mode 1 Output Timing ...................................................................................3-15
Mode 2 Bidirectional Timing .........................................................................3-16
Chapter 4
Theory of Operation
Data Transceivers ..........................................................................................................4-2
PC I/O Channel Control Circuitry .................................................................................4-2
Plug and Play Circuitry .................................................................................................4-2
Interrupt Control Circuitry ............................................................................................4-2
82C55A Programmable Peripheral Interface ................................................................4-3
82C53 Programmable Interval Timer ...........................................................................4-3
Digital I/O Connector ....................................................................................................4-4
Appendix A
Specifications
Appendix B
OKI 82C55A Data Sheet
Appendix C
OKI 82C53 Data Sheet
Appendix D
Register-Level Programming
Appendix E
Using Your PC-DIO-96 (Non-PnP) Board
Appendix F
Customer Communication