National Instruments DIO 6533 사용자 설명서
Chapter 5
Signal Timing
DIO 6533 User Manual
5-16
© National Instruments Corporation
Figure 5-13 shows an output transfer in leading-edge mode.
Figure 5-13. Leading-Edge Mode Output
Leading-Edge Mode Timing Specifications
and
mode.
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
Unasserted
Initial State
ACK Cleared
Send
ACK
Pulse
* With REQ-edge latching enabled, the data written is
delayed until the next inactive-going REQ edge.