96-Bit Parallel Digital I/O Interface User Manual

Chapter 3 Signal Connections

PCI-DIO-96 User Manual 3-10

National Instruments Corporation

Mode 1 Input Timing

The timing specifications for an input transfer in mode 1 are as follows:

Figure 3-4. Timing Specifications for Mode 1 Input Transfer

Name Description Minimum Maximum

STB* Pulse Width

100 —

STB* = 0 to IBF = 1

— 150

Data before STB* = 1

20 —

STB* = 1 to INTR = 1

— 150

Data after STB* = 1

50 —

RD* = 0 to INTR = 0

— 200

RD* = 1 to IBF = 0

— 150

All timing values are in nanoseconds.

DATA

RD *

INTR

IBF

STB *