Control Signal Summary; Rtsi Bus Interface - National Instruments DIO 6533 User Manual

Signal Name
REQ<1..2>
ACK<1..2>
STOPTRIG<1..2>
PCLK<1..2>

RTSI Bus Interface

© National Instruments Corporation

Control Signal Summary

The direction and function of each group's signal timing and
handshaking lines vary, depending on the mode of operation you select
for the group. Table 4-2 shows the direction and function of each
control signal in each mode.
Table 4-2. Control Signal Summary
Direction in Function in
Handshaking Handshaking
Mode Mode
input request
output acknowledge
—
input or output peripheral
clock
The PCI-DIO-32HS, PXI-6533, and AT-DIO-32HS each contains a
RTSI bus interface.
The PCI-DIO-32HS and AT-DIO-32HS each contains a RTSI
connector and an interface to the National Instruments RTSI bus. The
RTSI bus provides seven trigger lines and a system clock line. All
National Instruments AT and PCI boards that have RTSI bus connectors
can be cabled together inside a computer to share these signals.
The PXI-6533 uses pins on the PXI J2 connector to connect the RTSI
bus to the PXI trigger bus as defined in the PXI Specification, rev. 1.0.
All National Instruments PXI boards that provide a connection to these
pins can be connected together by software. This feature is available
only when the PXI-6533 is used in a PXI-compatible chassis. It is not
supported in CompactPCI chassis.
Direction in
Pattern
Generation
input or
output
input
— input
—
4-7
Chapter 4 Signal Connections
Function in Function in
Pattern Unstrobed
Generation Mode
request extra inputs
(IN<3..4>)
start trigger extra outputs
(START– (OUT<3..4>)
TRIG<1..2>)
stop trigger extra inputs
(IN<1..2>)
— extra outputs
(OUT<1..2>)
DIO 6533 User Manual