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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
• 24mA 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 AppendixA,
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
CompactPCI2.0R2.1 document.