Mode 2 Bidirectional Timing; Figure 4-4. Timing Specifications For Mode 2 Bidirectional Transfer - National Instruments PCI-DIO-96 User Manual

Mode 2 Bidirectional Timing

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.
© National Instruments Corporation
Figure 4-4 shows the timing specifications for bidirectional transfers in
mode 2.
T1
T3
T4
T2
Description

Figure 4-4. Timing Specifications for Mode 2 Bidirectional Transfer

T6
T7
T5
T8
Minimum
4-7 PCI-DIO-96/PXI-6508/PCI-6503 User Manual
Chapter 4 Theory of Operation
T10
T9
†
Maximum
— 150
20 —
100 —
— 150
50 —
— 150
100 —
— 150
20 250
— 150
†