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Chapter 1
Introduction
Getting Started with Your PCI/PXI-6810 SDA
1-4
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National Instruments Corporation
Using PXI with CompactPCI
♦
PXI-6810 only
Compatibility between PXI-compatible products and standard
CompactPCI products is an important feature of 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
PXI trigger bus on your PXI-6810 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 either between CompactPCI
devices with different sub-buses or between CompactPCI devices with
sub-buses and PXI. The standard implementation for CompactPCI does
not include these sub-buses. Your PXI-6810 device will work in any
standard CompactPCI chassis adhering to the PICMG CompactPCI 2.0
R2.1 document.
PXI-specific features, the RTSI bus trigger, RTSI Clock, and Serial
Communication are all implemented on the J2 connector of the
CompactPCI bus. Table 1-1 lists the J2 pins used by your PXI-6810,
which is compatible with any CompactPCI chassis with a sub-bus that
does not drive these lines. Even if the sub-bus can drive these lines, the
PXI-6810 is still compatible as long as those pins on the sub-bus are
disabled by default and are never enabled.
Caution:
Damage to your equipment can occur if these lines are driven by the
sub-bus.
!