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Chapter 4 Signal Connections
National Instruments Corporation 4-57 AT-MIO/AI E Series User Manual
Mode 2 Bidirectional Timing
The following are the timing specifications for bidirectional transfers in
Mode 2:
Figure 4-40. Mode 2 Bidirectional Timing
Name
Description Minimum Maximum
T1
WR* = 1 to OBF* = 0 – 150
T2 Data before STB* = 1 20 –
T3 STB* Pulse Width 100 –
T4 STB* = 0 to IBF = 1 – 150
T5 Data after STB* = 1 50 –
T6 ACK* = 0 to OBF = 1 – 150
T7 ACK* Pulse Width 100 –
T8 ACK* = 0 to Output – 150
T9 ACK* = 1 to Output Float 20 250
T10 RD* = 1 to IBF = 0 – 150
All timing values are in nanoseconds.
T1
T6
T7
T3
T4
T10
T2 T5 T8 T9
WR *
OBF *
INTR
ACK *
STB *
IBF
RD *
DATA