National Instruments DIO 6533 사용자 설명서
Chapter 5
Signal Timing
© National Instruments Corporation
5-17
DIO 6533 User Manual
Figure 5-14. Leading-Edge Mode Input 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
—
t
dir(1)
Input data setup to REQ active
(with REQ-edge latching)
(with REQ-edge latching)
0
—
t
rdi
Input data hold from REQ active
(with REQ-edge latching)
(with REQ-edge latching)
10
—
t
dir(2)
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
125
—
t
r*a*
REQ inactive to ACK inactive
150
—
All timing values are in nanoseconds.
REQ
ACK
Input Data
(REQ-edge
latching disabled)
tr*r
tr*a*
tdir(2)
tadi
tar
taa*
trr*
Input Data
(REQ-edge latching)
trdi
tdir(1)