The NI PCI-7813 / PCI-7813R Series Digital RIO is a reconfigurable I/O device built on a Virtex-II 3M Gate FPGA for custom hardware development and real-time applications. It delivers 160 bidirectional digital I/O channels with hardware-timed precision, supporting counter/timers, PWM, encoder inputs, and user-defined communication protocols via LabVIEW FPGA programming. The device executes onboard decision-making at 25 ns resolution timing and provides 196 KB of onboard memory for high-speed digital pattern generation with DMA data streaming support.
Technical Specifications
FPGA Resource
• Virtex-II V3000: 28,672 flip-flops, 28,672 4-input LUTs, 96 multipliers (18×18), 1,728 Kbits embedded block RAM
Digital I/O
• 160 bidirectional channels (TTL compatible, 3.3 V logic)
• Minimum sampling period: 5 ns
• Minimum input pulse width: 25 ns
• Minimum output pulse width: 12.5 ns
• Configurable power-up state per channel
Timing & Memory
• Selectable onboard clocks: 40 MHz, 80 MHz, 120 MHz, 160 MHz, or 200 MHz
• User-defined triggering and timing at 25 ns resolution
• 196 KB onboard memory for pattern generation
Connectors & Integration
• Four 68-pin female VHDCI connectors
• RTSI bus for inter-device synchronization
• NSC68-262650 link for 5B and SSR backplane connectivity
Power & Physical
• +3.3 VDC (±5%): 850 mA typical
• +5 VDC (±5%): 9 mA typical; 4.50–5.25 VDC at 1 A max on connector
• 6.7 × 4.3 inches (17 × 11 cm); 0.25 lb (112 g)
• PCI expansion slot form factor
Environmental
• Operating: 0 °C to 55 °C; Storage: -20 °C to 70 °C
– Key Features
• Hardware-timed onboard processing eliminates latency in control loops
• Flexible I/O reconfiguration without daughterboard changes
• DMA streaming for high-throughput data acquisition and generation
• RTSI timing synchronization with other NI hardware
– Typical Applications
• High-speed waveform generation and acquisition
• Hardware-in-the-loop (HIL) testing
• Sensor simulation and stimulus generation
• Custom digital protocol implementation
• Real-time counter and timing operations
– Compatibility & Integration
The PCI-7813 and PCI-7813R share identical specifications; the latter is the original designation. Integration with NI 5B and SSR signal conditioning backplanes is enabled via optional NSC68-262650 link. LabVIEW FPGA development tools provide direct compilation to Virtex-II hardware.
