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Contents
653X User Manual viii ni.com
Choosing Whether or Not to Use a Programmable Delay..............................2-8
Choosing Continuous or Finite Data Transfer................................................2-9
Finite Transfers.................................................................................2-9
Continuous Input ..............................................................................2-9
Continuous Output............................................................................2-9
Choosing DMA or Interrupt Transfers.............................................2-10
Connecting Signals .........................................................................................2-10
Choosing the Startup Sequence.......................................................................2-11
Using an Initialization Order............................................................2-11
Controlling Line Polarities ...............................................................2-12
Creating a Program .........................................................................................2-12
Generating and Receiving Digital Patterns and Waveforms—Pattern I/O ................... 2-17
Deciding the Width of Data to Transfer..........................................................2-17
Deciding Transfer Direction ...........................................................................2-18
Choosing an Internal or External REQ Source...............................................2-18
Deciding the REQ Polarity .............................................................................2-18
Deciding the Transfer Rate .............................................................................2-18
Deciding How to Start and Stop Data Transfer—Triggering.........................2-19
Start and Stop Trigger.......................................................................2-20
Choosing Continuous or Finite Data Transfer................................................2-21
Finite Transfers.................................................................................2-21
Continuous Input ..............................................................................2-21
Continuous Output............................................................................ 2-22
Choosing DMA or Interrupt Transfers.............................................2-22
Monitoring Data Transfer ...............................................................................2-23
Connecting Signals .........................................................................................2-23
Creating a Program .........................................................................................2-24
Monitoring Line State—Change Detection...................................................................2-26
Deciding the Width of Data to Acquire ..........................................................2-26
Deciding Which Lines You Want to Monitor................................................. 2-27
Deciding How to Start and Stop Data Transfer—Triggering.........................2-27
Start and Stop Trigger.......................................................................2-28
Choosing Continuous or Finite Data Transfer................................................2-30
Finite Transfers.................................................................................2-30
Continuous Input ..............................................................................2-30
Choosing DMA or Interrupt Transfers.............................................2-31
Connecting Signals .........................................................................................2-31
Creating a Program .........................................................................................2-31
Chapter 3
Timing Diagrams
Pattern I/O Timing Diagrams........................................................................................3-1
Internal REQ Signal Source............................................................................3-1