National Instruments 653 Series User Manual page 78

When REQ
Unasserted
Wait
For
REQ
When REQ
Asserted
Initial State: ACK Cleared
© National Instruments Corporation
Programmable
Delay
Clear
ACK
Wait
For
REQ
* With REQ-edge latching enabled, the data input
is from the last inactive-going REQ edge.
Figure 3-21. Trailing-Edge Input State Machine
3-23
Chapter 3
Wait
For
Space
When 6533 Device
Send
has space for data,
ACK
input data.*
Programmable
Delay
Timing Diagrams
NI 653X User Manual