Mode 1 Input Timing - National Instruments PC-DIO-96/PnP User Manual

Chapter 3 Signal Connections

Mode 1 Input Timing

STB*
IBF
INTR
RD*
DATA
Name
T1
T2
T3
T4
T5
T6
T7
All timing values are in nanoseconds.
PC-DIO-96/PnP User Manual
The following figure illustrates the timing specifications for an input
transfer in mode 1.
T1
T2
T3
Description
STB* pulse width
STB* = 0 to IBF = 1
Data before STB* = 1
STB* = 1 to INTR = 1
Data after STB* = 1
RD* = 0 to INTR = 0
RD* = 1 to IBF = 0
T4
T6
T5
Minimum
100
3-14
T7
Maximum
–
– 150
20 –
– 150
50 –
– 200
– 150
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