Overview and Applications

The NI 653x devices are high-speed, 32-bit, parallel, digital I/O

interfaces for PCI, PXI,

PCMCIA, and ISA. They incorporate the

National Instruments DAQ-DIO ASIC, specifically designed to deliver

high performance on plug-in DIO devices. The NI 653x devices perform

unstrobed I/O, pattern I/O, and handshaking at speeds up to

20 MHz, or 80 Mbytes/s for 32-bit transfers (NI 6534). The NI 6534

family delivers digital I/O coupled with large onboard memory for high-

speed pattern I/O at deterministic rates.

Features

Data Latches and Drivers

The 32 digital I/O lines are divided into four 8-bit ports. For pattern

I/O or handshaking, the ports can be grouped into two 8-bit or

16-bit groups, or a single 32-bit group. When configured for output,

each data line can sink or source up to 24 mA when set logic low or

high, respectively. When configured as inputs, the 653x data lines

are diode-terminated to dampen the input signals at TTL levels.

When performing static or unstrobed I/O, you can individually

configure each of the 32 I/O lines as input or output.

Pattern I/O and Handshaking I/O

With pattern I/O, you can input or output

patterns under timing control of a clock

signal. When using handshaking I/O to interface your NI 653x to a

peripheral device, data is transferred when both the NI 653x and the

peripheral are ready. See page 376 in the Digital I/O overview and

page 787 in the Digital I/O tutorial for more information.

Change Detection

You can program the 653x devices to acquire data when one or

more user-specified digital input lines changes state. See page

377 in the Digital I/O overview and page 787 in the Digital I/O

tutorial for more information.

• 32 (5 V TTL/CMOS) digital

input/output lines

•20 MHz (80 Mbytes/s) maximum

transfer rate

• 8, 16, or 32-bit transfers

• Start and stop triggering, pattern

and change detection

• 32 MB onboard memory per data

path (group) (NI 6534 only)

• NI-DAQ driver simplifies

configuration and measurements

Models

NI 6534

• NI PCI-6534

• NI PXI-6534

NI 6533

• NI PCI-DIO-32HS

• NI PXI-6533

• NI DAQCard-6533

• NI AT-DIO-32HS

Operating Systems

•Windows 2000/NT/XP/Me/9x

• Mac OS 9*

• Real-time performance with

LabVIEW (page 56)

Recommended Software

• LabVIEW

• LabWindows/CVI

• Measurement Studio for Visual

Basic (NI 6533 only)

Other Compatible Software

•Visual Basic

• C/C++

Driver Software (included)

• NI-DAQ

*See ordering information

NI 653x

High-Speed 32-bit Digital

Pattern I/O and Handshaking

Digital

Maximum

Onboard

Logic

Handshaking Pattern

Family

Bus

I/O Lines

Rate

Memory

Level

Isolation

I/O

I/O

Messaging Triggering

NI 6534

PCI, PXI

32

20 MHz (80 Mbytes/s

64 MB

2

5 V TTL/

–

✓✓

✓

✓

for 32-bit transfers)

CMOS

NI 6533

PCI

PXI

(pattern I/O)

5 V TTL/

ISA

32

–

CMOS

–

✓✓

✓

✓

PCMCIA

(handshaking)

1

INFO CODES

For more information

or to order products

and enter:

pci6534

pxi6534

pcidio32hs

pxi6533

daqcard6533

atdio32hs

BUY ONLINE!

Table 1. NI 653x Specifications Overview (See page 391 for detailed specifications)