National Instruments DIO 6533 사용자 설명서

Chapter 5

Signal Timing

© National Instruments Corporation

5-13

DIO 6533 User Manual

Figure 5-11.  Level-ACK Mode Output Timing

t

rr*

REQ pulse width

75

—

t

r*r

REQ inactive duration

75

—

t

ar

ACK to next REQ

0

—

t

aa*

ACK pulse width

225

—

t

ra*

REQ to ACK inactive

100

200

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

—

1 

t

doa

 (min) = 25 + 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

tra*

tdoa

tar

taa*

trr*

trdo