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NI 6581

Digital Adapter Module for NI FlexRIO (FPGA Programming Req)

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  • 100 MHz maximum clock rate
  • 54 single-ended digital I/O channels
  • Selectable voltages of 1.8, 2.5, and 3.3 V or external reference voltage (1.8 to 5.5 V)
  • Mates with an NI FlexRIO FPGA module for reliable and deterministic control of digital communication


The NI 6581 is a 100 MHz digital adapter module for NI FlexRIO field-programmable gate array (FPGA) modules. This adapter module features 54 single-ended digital I/O lines with software-selectable voltages of 1.8, 2.5, and 3.3 (5 V tolerant). You can also reference an external voltage (ranging from 1.8V to 5.5V independently for each of the two connectors). You can combine it with an NI FlexRIO FPGA module to create an NI FlexRIO digital instrument (NI PXI-6581R) for a wide variety of applications from high-speed communication with a device under test to custom protocol emulation.

You can also use this adapter module with an NI FlexRIO FPGA module for customized semiconductor testing, electronics testing and interfacing, and implementation and testing of custom digital protocols.

In addition, you can configure the digital I/O lines as custom counter/timers, pulse-width modulation (PWM) channels, or communication buses for user-defined protocols or applications requiring serial triggering. You can even customize the communications with the onboard DRAM for optimized streaming operations.

Specifications Documents

Specifications Summary

General
Product Family High-Speed Digital I/O
Form Factor PXI Platform
PXI Bus Type PXI Hybrid Compatible
Part Number 780565-01
Operating System/Target Real-Time , FPGA , Windows
LabVIEW RT Support Yes
Triggering Digital
Synchronization Bus (RTSI) No
External Clocking Yes
Length 12.9 cm
Width 2 cm
Height 12.1 cm
I/O Connector 68-pin VHDCI female
Product Name NI 6581
Analog Input
Channels 0
Analog Output
Channels 0
Digital I/O
Bidirectional Channels 54
Timing Hardware
Maximum Clock Rate 100 MHz
Maximum Data Rate / Channel 100 Mbits/s
Logic Levels TTL , 2.5 V , 3.3 V , Other , 1.8 V
Differential Logic No
Watchdog Timer No
Supports Handshaking I/O? Yes
Supports Pattern I/O? Yes
Digital Interface Parallel
Per Cycle Bidirectional Yes
Logic State Control Deterministic
Supports Hardware Data Compare? Yes
Supports Linking/Looping Segments? Yes
Supports Data Delay? Yes
Offers Dedicated Bandwidth? Yes
On-Board Memory 0 MB
Part Number Description Est Ship  US Dollars Qty
NI 6581 Digital Adapter Module for NI FlexRIO
780565-01NI 6581 100MHz DIO (54 Channel) NI FlexRIO Adapter Module12 - 20$ 1,035.00
Accessories and NI FlexRIO FPGA modules
780560-01NI PXI-7951R NI FlexRIO FPGA Module (Virtex-5 LX30)12 - 20$ 3,105.00
780561-01NI PXI-7952R NI FlexRIO FPGA Module (Virtex-5 LX50, 128MB RAM)5 - 10$ 4,350.00
780562-01NI PXI-7953R NI FlexRIO FPGA Module (Virtex-5 LX85, 128MB RAM)5 - 10$ 5,900.00
780563-01NI PXI-7954R NI FlexRIO FPGA Module (Virtex-5 LX110, 128MB RAM)12 - 20$ 7,250.00
196275-01SHC68-C68-D4 Shielded Single-Ended Cable, 1 m10 - 15$ 319.00
192681-1R5SHC68-H1X38 High-Speed Digital Flying-Leads Cable Accessory, 1.5m10 - 15$ 535.00
195949-01C68-C68-D4 Unshielded Cable, 2X68-Position VHDCI Offset, 1 m10 - 15$ 212.00
778592-01CB-2162 Single-ended Digital I/O Accessory10 - 15$ 341.00
778747-01SMB-2163 Single-Ended Digital I/O Accessory (Rack-Mountable)12 - 20$ 1,120.00
780390-01VHDCI Connector, Dual Stack, 68-Pin, R-Angle, Through Hole Mount10 - 15$ 21.00
780389-01VHDCI Connector, 68-Pin, Vertical, PWB Through Hole Mount10 - 15$ 21.00

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This service is only available for PXI, NI CompactRIO, and NI Compact FieldPoint systems.

Extended Warranties

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  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
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