National Instruments DIO 6533 - page 80

Chapter 5 Signal Timing
© National Instruments Corporation 5-21 DIO 6533 User Manual
Figure 5-18. Long-Pulse Mode Input Timing
Parameter Description Minimum Maximum
Input Parameters
trr* REQ pulse width 75 —
tr*r REQ inactive duration 75 —
tar ACK to next REQ 0—
t
dir(1) Input data setup to REQ active
(with REQ-edge latching) 0—
t
rdi Input data hold from REQ active
(with REQ-edge latching) 10 —
tdir(2) Input data setup to REQ
(with REQ-edge latching disabled) 0—
t
adi Input data hold from ACK
(with REQ-edge latching disabled) 0—
Output Parameters
taa* ACK pulse width 1251—
tr*a* REQ inactive to ACK inactive 150 —
1 taa*(min) = 125 + programmable delay All timing values are in nanoseconds.
REQ
ACK
Input Data
(REQ-edge latching)
Input Data
(REQ-edge
latching disabled)
tr*r
tr*a*
tdir(2) tadi
tar
taa*
trr*
trdi tdir(1)