High-Speed 32-bit Digital
Pattern I/O and Handshaking
Data Lines
(32)
Data Lines
Data Latches
and
Drivers
Bus
Interface
Internal
FIFOs
Driver Software
Onboard
Scarab
Memory
MITE PCI,
PCMCIA, or AT
Plug and Play
Interface
Control
Lines (8)
DMA/
Interrupt
Requests
Handshaking
and
Control
(for 6534 only)
With NI-DAQ driver software, you can configure your devices
interactively, write custom programs, and perform digital I/O
transfers easily. With NI-DAQ, the NI 6533 and NI 6534 devices
are software-compatible, providing a seamless upgrade path.
Sharing clocks and triggers between NI 653x and other
measurement devices is also greatly simplified. To get you started
with your application quickly, NI-DAQ includes numerous example
programs for LabVIEW and other ADEs.
DAQ-DIO
Counters
and
Timers
Request
Processing
Clock
Selection
EEPROM
20 MHz
RTSI Interface
(PCI/PXI/AT only)
Oscillator
RTSI Bus (PCI/PXI/AT only)
Figure 1. NI 653x Hardware Block Diagram
Messaging
Signal Names
Signal Types
data
Signal Descriptions
Digital input/output lines
Handshaking, timing
You can develop event-driven application programs with NI 653x devices
by programming them to generate a message when conditions you
specify are met. The messages can be generated when a specified
number of bytes have been transferred, when a specified input pattern
is matched, or when a measurement operation completes.
DIOAx, DIOBx, DIOCx, DIODx
REQ1, REQ2, ACK1, ACK2
control
and trigger lines
STOPTRIG1, STOPTRIG2
PCLK1, PCLK2
control
control
Trigger lines
Handshaking timing lines
Lines determine power-up states
CPULL, DPULL
power-up
Onboard Memory
Table 2. Signal Names and Descriptions
NI 6534 devices provide two groups of 32 MB of onboard memory, so
you can perform pattern I/O at deterministic high rates as long as the
patterns can fit in one of these memory locations. To improve system
performance for repetitive pattern output applications, you can load
your patterns into the onboard memory once and then output them
repeatedly, without reloading them across the computer bus.
Related Products
High-Speed Digitizers ......................................see page 440
Arbitrary Waveform and Function Generators ......see page 467
Multifunction Data Acquisition ........................see page 188
DMA Control Circuitry
NI 653x devices for PCI and PXI use the National Instruments MITE PCI
interface. The MITE provides bus-master operation, PCI burst transfers,
and high-performance DMA controllers for fast, continuous, scatter-
gather DMA.
Ordering Information
NI PCI-6534* ........................................................778287-01
NI PXI-6534* ........................................................778288-01
NI PCI-DIO-32HS ..................................................777314-01
NI PXI-6533 ..........................................................777429-01
NI DAQCard-6533.................................................777315-01
NI AT-DIO-32HS* ..................................................777313-01
Includes NI-DAQ driver software.
Multidevice Synchronization
34 68
GND 33 67
DIOD7
GND
All NI 653x devices except the DAQCard-6533 use
the PXI trigger bus or RTSI Bus to send and
receive clock and trigger signals to and from other
devices in your system. Using these buses, you
can create synchronized systems with large
numbers of digital I/O lines and systems in which
digital I/O is synchronized with other types of
measurements. The PXI-653x modules feature
phase-lock loop (PLL) circuitry to tightly
synchronize with other PLL devices.
DIOD6
DIOD5
GND
DIOD4
32 66
31 65
30 64
29 63
28 62
DIOD3
GND
DIOD2
DIOD1
GND
DIOD0
DIOC7
GND 27 61
DIOC6
DIOC5
GND
DIOC4
DIOC3
26 60
25 59
GND 24 58
DIOC2
DIOC1
RGND
GND
*Windows only
DIOC0
23 57
22 56
21 55
DIOB7
DIOB6
For information on extended warranty and value added
services, see page 20.
GND 20 54
19 53
GND 18 52
DIOB5
DIOB4
DIOB3
RGND
DIOB1
17 51
16 50
15 49
DIOB2
DIOB0
DIOA7
GND
GND
Recommended Configurations
GND 14 48
DIOA6
DIOA5
GND
Family
DAQ Device
Accessory
Cable
SH68-68-D1 (183432-01)
N/A*
DIOA4
DIOA3
13 47
12 46
NI 6534
PCI-6534
SCB-68 (776844-01)
TB-2715 (778242-01)
SCB-68 (776844-01)
TB-2715 (778242-01)
I/O Connector and Power-Up States
All digital I/O is through a 68-pin cable connector.
See pin assignments and descriptions in
Figure 2 and Table 2. You can independently
select the power-on state for the control and
data lines through the use of CPULL and
DPULL, respectively.
GND 11 45
DIOA0
10 44
DIOA2
DIOA1
RGND
GND
PXI-6534
REQ2
ACK2
9
8
7
6
5
4
3
2
1
43
42
41
40
39
38
37
36
35
NI 6533
PCI-DIO-32HS
PXI-6533
SH68-68-D1 (183432-01)
N/A*
STOPTRIG2
PCLK2
GND
CPULL
GND
DAQCard-6533
SCB-68 (776844-01) PSHR68-68-D1 (777420-01)
PCLK1
STOPTRIG1
ACK1
DPULL
GND
AT-DIO-32HS
SCB-68 (776844-01) SH68-68-D1 (183432-01)
*TB-2715 plugs directly into device; no cable required.
REQ1
GND
+5 V
RGND
See page 384 for accessory and cable information.
Figure 2. NI 653x I/O Connector
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com 379
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