National Instruments 653X 用户手册

Contents

© National Instruments Corporation

ix

653X User Manual

External REQ Signal Source ...........................................................................3-2

Handshaking I/O Timing Diagrams...............................................................................3-4

Comparing the Different Handshaking Protocols ...........................................3-4
Using the Burst Protocol .................................................................................3-5
Using Asynchronous Protocols .......................................................................3-12
Using the 8255-Emulation Protocol ................................................................3-12
Using the Level-ACK Protocol .......................................................................3-18
Using Protocols Based on Signal Edges..........................................................3-24
Using the Trailing-Edge Protocol....................................................................3-25

Appendix A
Specifications

Appendix B
Using PXI with CompactPCI

Appendix C
Connecting Signals with Accessories

Appendix D
Hardware Considerations

Appendix E
Optimizing Your Transfer Rates

Appendix F
Technical Support Resources