Chapter 3
Timing Diagrams
©
National Instruments Corporation
3-39
Figure 3-36.
Long Pulse Output State Machine
Wait
For
Data
Wait
For
REQ
Programmable
Delay
Programmable
Delay
Wait
For
REQ
When REQ
Asserted
When 6533 Device has
data to output, output data.*
Clear
ACK
Pulse
When REQ
Unasserted
Initial State: ACK Cleared
Send
ACK Pulse
* With REQ-edge latching enabled, the data output is
delayed until the next inactive-going REQ edge.