Mode 2 Bidirectional Timing - National Instruments AT E Series User Manual

Chapter 4 Connecting Signals
WR *
OBF *
INTR
ACK *
STB *
IBF
RD *
DATA
Name
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.
AT E Series User Manual

Mode 2 Bidirectional Timing

Figure 4-40 details the timing specifications for bidirectional transfers in
Mode 2.
T1
T3
T4
T2
Description
Figure 4-40. Mode 2 Bidirectional Timing
T6
T7
T5 T8
Minimum
4-54
T10
T9
Maximum
— 150
20 —
100 —
— 150
50 —
— 150
100 —
— 150
20 250
— 150
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