PCI-7811R
May 16, 2026

PCI-7811R

Model: PCI‑7811R Brand: NI (National Instruments) Type: 160-channel FPGA reconfigurable digital I/O (RIO) PCI card FPGA: Xilinx Virtex-II XC2V1000 (1M gates) Bus: 32-bit 5V PCI Connector: 4 × 68-pin VHDCI Driver: LabVIEW FPGA, NI-RIO Status: Mature (Mature), available for purchase / maintenance; recommended as an alternative to PCIe‑7841R Core Overview PCI-7811R is a high-speed digital RIO board in the R series, integrating a user-programmable FPGA. It is suitable for hard real-time, custom timing, high-speed digital I/O, and onboard processing scenarios. With 160 bidirectional DIO, it can be individually configured as input/output/counter/encoder/PWM/communication protocol. Combined with LabVIEW FPGA, it enables hardware-level timing, synchronization, and decision-making, and is widely used in industrial control, HIL testing, high-speed waveform generation, sensor simulation, motion control, etc.

Description

Main technical parameters (simplified)

1. FPGA core

Model: Virtex-II XC2V1000 (1M logic gates)

Resources: 10,240 flip-flops, 40×18×18 multipliers, 720 Kbit block RAM

Development: LabVIEW FPGA graphical programming, hardware execution

2. Digital I/O (DIO)

Number of channels: 160 bidirectional DIO (can be configured as input/output arbitrarily)

Channel rate: Up to 40 MHz (hardware timing)

Function configuration:

Digital input/output (TTL level)

32-bit counter/timer, PWM output

Encoder A/B/Z phase input (up to 40 MHz)

Custom serial protocols (SPI, UART, etc.)

Isolation: I/O isolated from the chassis at 2500 Vrms, strong anti-interference

3. Synchronization and storage

Synchronization bus: RTSI (8 channels of trigger + 1 channel of clock, multi-card synchronization)

On-board cache: 80 KB FIFO, supports DMA streaming data

FPGA RAM: 720 Kbit block RAM (user available)

4. Electrical and environmental

Power supply: +3.3 V @ 650 mA; +5 V @ 9 mA

Power consumption: Approximately 2.2 W

Operating temperature: 0 - 55 °C (standard); -40 - 85 °C (extended temperature version)

Size: Standard half-length PCI (170 × 109 mm)

5. Typical Applications

High-speed digital I/O control: Industrial automation, semiconductor testing, electronic manufacturing

Hardware-in-the-Loop (HIL) testing: Control algorithm verification, real-time simulation

Custom timing/triggers: Synchronous sampling, pulse sequence generation, precise timing

Motion control: High-speed pulse output, encoder acquisition, multi-axis synchronization

Communication protocols: Custom serial ports, parallel interfaces, dedicated buses

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