National Instruments DIO 6533 user manual t

Chapter 5 Signal Timing
DIO 6533 User Manual 5-26 © National Instruments Corporation
Figure 5-22. Trailing-Edge Mode Input Timing
Parameter Description Minimum Maximum
Input Parameters
trr* REQ pulse width 75 —
tr*r REQ inactive duration 75 —
tdir* Input data setup to REQ inactive
(with REQ-edge latching) 0—
t
r*di Input data hold from REQ inactive
(with REQ-edge latching) 10 —
tdir 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 22512752
ta*r* ACK inactive to next REQ inactive 0—
1
t
aa* (min) = 225 + programmable delay All timing values are in nanoseconds.
2 taa*(max) = 275 + programmable delay
REQ
ACK
Input Data
(REQ-edge latching)
Input Data
(REQ-edge
latching disabled)
tdir*
tr*r
tdir
taa* ta*r*
trr*
tr*di
tadi tadi