National Instruments PCI-6023E, PCI-6024E, PCI-6025E Mode 2 Bidirectional Timing

Chapter 4 Signal Connections
© National Instruments Corporation 4-29 PCI-6023E/6024E/6025E User Manual
Mode 2 Bidirectional Timing
Timing specifications for a bidirectional transfer in mode 2 are as follows:
Figure 4-15. Timing Specifications for Mode 2 Bidirectional Transfer
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
PCI.book Page 29 Wednesday, September 16, 1998 9:09 AM