Mode 2 Bidirectional Timing; Figure 4-40. Mode 2 Bidirectional Timing - National Instruments AT-MIO/AI E Series User Manual

WR *
OBF *
INTR
ACK *
STB *
IBF
RD *
DATA
National Instruments Corporation

Mode 2 Bidirectional Timing

The following are the timing specifications for bidirectional transfers in
Mode 2:
T1
T3
T4
T2

Figure 4-40. Mode 2 Bidirectional Timing

Name Description
T1 WR* = 1 to OBF* = 0
T2 Data before STB* = 1
T3 STB* Pulse Width
T4 STB* = 0 to IBF = 1
T5 Data after STB* = 1
T6 ACK* = 0 to OBF = 1
T7 ACK* Pulse Width
T8 ACK* = 0 to Output
T9 ACK* = 1 to Output Float
T10 RD* = 1 to IBF = 0
All timing values are in nanoseconds.
T6
T7
T5 T8
4-57
Chapter 4 Signal Connections
T9
Minimum Maximum
– 150
20 –
100 –
– 150
50 –
– 150
100 –
– 150
20 250
– 150
AT-MIO/AI E Series User Manual
T10