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Chapter 1
Introduction
Using PXI with CompactPCI
IMAQ PCI/PXI-1408 User Manual
between the 1408 device and up to four National Instruments DAQ boards
in your computer. The RTSI bus can even synchronize multiple 1408 device
image captures.
Detailed specifications of the PCI-1408 and PXI-1408 are in Appendix A,
Specifications.
Using PXI-compatible products with standard CompactPCI products is an
important feature provided by the PXI Specification, Revision 1.0. If you
use a PXI-compatible plug-in device in a standard CompactPCI chassis,
you will be unable to use PXI-specific functions, but you can still use the
basic plug-in device functions. For example, the RTSI bus on your
PXI-1408 device is available in a PXI chassis, but not in a CompactPCI
chassis.
The CompactPCI specification permits vendors to develop sub-buses that
coexist with the basic PCI interface on the CompactPCI bus. Compatible
operation is not guaranteed between CompactPCI devices with different
sub-buses nor between CompactPCI devices with sub-buses and PXI. The
standard implementation for CompactPCI does not include these
sub-buses. Your PXI-1408 device will work in any standard CompactPCI
chassis adhering to the PICMG 2.0 R2.1 CompactPCI core specification
using the 64-bit definition for J2.
PXI specific features are implemented on the J2 connector of the
CompactPCI bus. Table 1-1 lists the J2 pins your PXI-1408 device uses.
Your PXI device is compatible with any CompactPCI chassis with a
sub-bus that does not drive these lines. Even if the sub-bus is capable of
driving these lines, the PXI device is still compatible as long as those pins
on the sub-bus are disabled by default and not ever enabled. Damage may
result if these lines are driven by the sub-bus.
Table 1-1. Pins Used by the PXI-1408 Device
PXI-1408 Signal
RTSI Trigger <0..6>
PXI Pin Name
PXI Trigger <0..6>
1-2
PXI J2 Pin Number
B16, A16, A17, A18,
B18, C18, E18
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