National Instruments DIO 6533 - Manual (Page 81)

Chapter 5 Signal Timing
DIO 6533 User Manual 5-22 © National Instruments Corporation
Figure 5-19. Long-Pulse Mode Output Timing
Parameter Description Minimum Maximum
Input Parameters
t
rr*
REQ pulse width 75 —
t
r*r
REQ inactive duration 75 —
t
ar
ACK to next REQ 0 —
Output Parameters
t
aa* ACK pulse width 125
1 —
t
r*do
REQ inactive to new output data
(with REQ-edge latching) 0 50
t
rdo
REQ to new output data
(with REQ-edge latching disabled) 0 —
t
doa
Output data valid to ACK
(with REQ-edge latching disabled) 25 —
1 t
aa*
(min) = 125 + programmable delay All timing values are in nanoseconds.
REQ
ACK
Output Data
(REQ-edge latching)
Output Data
(REQ-edge
latching disabled)
tr*r
tr*do
tdoa
tar
taa*
trr*
trdo