High-Speed 32-bit Digital
Pattern I/O and Handshaking
NI 653x
• 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
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++
Models
NI 6534
• NI PCI-6534
• NI PXI-6534
NI 6533
Driver Software (included)
• NI-DAQ
• NI PCI-DIO-32HS
• NI PXI-6533
• NI DAQCard-6533
• NI AT-DIO-32HS
*See ordering information
Digital
I/O Lines
Maximum
Rate
Onboard Logic
Handshaking Pattern
INFO CODES
For more information
or to order products
online, visit ni.com/info
and enter:
Family
Bus
Memory Level Isolation
I/O
I/O Messaging Triggering
2
NI 6534 PCI, PXI
32
20 MHz (80 Mbytes/s
for 32-bit transfers)
64 MB 5 V TTL/
CMOS
–
✓
✓
✓
✓
2
NI 6533
PCI
PXI
Up to 5 MHz
(pattern I/O)
5 V TTL/
pci6534
pxi6534
2
ISA
32
Up to 19.9 MHz
–
CMOS
–
✓
✓
✓
✓
PCMCIA
(handshaking)
1Configured as 32 MB/group. 2Rates may depend on application, computer, and software. See detailed specifications on page 390.
pcidio32hs
pxi6533
Table 1. NI 653x Specifications Overview (See page 391 for detailed specifications)
daqcard6533
atdio32hs
Overview and Applications
Pattern I/O and Handshaking I/O
With pattern I/O, you can input or output
patterns under timing control of a clock
BUY ONLINE!
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.
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.
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.
378 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
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