National-instruments PCI-6023E User Manual download pdf (Page 58)

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

WR* = 1 to OBF* = 0

—150

Data before STB* = 1

20 —

STB* Pulse Width

100 —

STB* = 0 to IBF = 1

—150

Data after STB* = 1

50 —

ACK* = 0 to OBF* = 1

—150

ACK* Pulse Width

100 —

ACK* = 0 to Output

—150

ACK* = 1 to Output Float

20 250

T10

RD* = 1 to IBF = 0

—150

All timing values are in nanoseconds.

T10

WR *

OBF *

INTR

ACK *

STB *

IBF

RD *

DATA

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National-instruments PCI-6023E User Manual Page 58