National Instruments DIO 6533 사용자 설명서
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
t
rr*
REQ pulse width
75
—
t
r*r
REQ inactive duration
75
—
t
dir*
Input data setup to REQ inactive
(with REQ-edge latching)
(with REQ-edge latching)
0
—
t
r*di
Input data hold from REQ inactive
(with REQ-edge latching)
(with REQ-edge latching)
10
—
t
dir
Input data setup to REQ
(with REQ-edge latching disabled)
(with REQ-edge latching disabled)
0
—
t
adi
Input data hold from ACK
(with REQ-edge latching disabled)
(with REQ-edge latching disabled)
0
—
Output Parameters
t
aa*
ACK pulse width
225
1
275
2
t
a*r*
ACK inactive to next REQ inactive
0
—
1
t
aa*
(min)
= 225 + programmable delay
All timing values are in nanoseconds.
2
t
aa*
(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