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Chapter 4 Connecting Signals
AT E Series User Manual 4-54 ni.com
Mode 2 Bidirectional Timing
Figure 4-40 details the timing specifications for bidirectional transfers in
Mode 2.
Figure 4-40. Mode 2 Bidirectional Timing
Name Description Minimum Maximum
T1
WR*=1toOBF*=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*=1toIBF=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