National Instruments PC-DIO-24, User Manual

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Configuration and Installation Chapter 2
PC-DIO-24 User Manual 2-10 © National Instruments Corporation
Mode 1 Output Timing
The following figure illustrates the timing specifications for an output transfer in mode 1.
T2
T3
WR*
OBF*
INTR
DATA
T4
T6
T5
ACK*
T1
Name Description Minimum Maximum
T1 WR* = 0 to INTR = 0 – 250
T2 WR* = 1 to output – 200
T3 WR* = 1 to OBF* = 0 – 150
T4 ACK* = 0 to OBF* = 1 – 150
T5 ACK* pulse width 100 –
T6 ACK* = 1 to INTR = 1 – 150
All timing values are in nanoseconds.