National Instruments DIO 6533 - Manual (Page 14)

Chapter 1 Introduction
DIO 6533 User Manual 1-2 © National Instruments Corporation
Each 6533 device contains the National Instruments DAQ-DIO chip,
providing two independent channels of digital input and output, pattern
generation, and handshaking. Each channel offers the following
functions:
• Selectable data path width (8, 16, or 32 bits)
• 16-sample-deep FIFO buffer
• 16-bit and 32-bit counters for timebase and interval generation,
with a maximum timing resolution of 50 ns
• A handshaking controller implementing six flexible timing
protocols
• Start and stop trigger detection and digital pattern detection
• 24 mA outputs
• Hysteresis and diode-based line termination on all inputs
With 6533 devices, you can use your computer or chassis as a digital
I/O tester, logic analyzer, or system controller for laboratory testing,
production testing, and industrial process monitoring and control.
For detailed 6533 device specifications, see Appendix A,
Specifications.
Using PXI with CompactPCI
Using PXI-compatible products with standard CompactPCI products is
an important feature provided by the PXI Specification, rev. 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-6533 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-6533 device will work in any
standard CompactPCI chassis adhering to the PICMG
CompactPCI 2.0 R2.1 document.