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Digilent PCI-DIO96 PCI-Based Digital I/O Board

Digilent PCI-DIO96 PCI-Based 96-Channel Logic-Level Digital Input/Output (I/O) Board is a high-density solution for digital interfacing, offering 96 TTL-compatible I/O lines organized into four programmable 24-bit groups. Designed for seamless integration into PCI-based systems, the Digilent PCI-DIO96 PCI-based board supports buffered I/O, interrupt-driven inputs, and emulates the widely used 82C55 PPI for flexible control. With dual 50-pin headers and compatibility with both Windows® and Linux® environments, the board is ideal for applications requiring reliable, high-speed digital signal monitoring, automation control, and embedded system testing.

Features

  • 96 digital I/O lines organized into four 24-bit groups, each configurable as input or output
  • TTL compatibility, supporting standard logic levels
  • 8255-compatible I/O ports - emulates the functionality of industry-standard 82C55 PPI chips for flexible I/O control
  • Programmable direction control - each 24-bit group can be independently programmed for input or output
  • Buffered I/O for improved signal integrity and drive capability
  • Supports interrupt generation on selected input lines for event-driven applications
  • High-speed PCI interface, fully compliant with PCI 2.2, supporting 32-bit data transfers at 33MHz
  • Two 50-pin headers for easy interfacing with external devices or custom wiring
  • Includes drivers and libraries for Windows and Linux, plus example code for rapid development
  • Compact PCI form factor fits standard PCI slots, making it suitable for desktop and industrial PCs

Applications

  • Industrial automation
  • Data acquisition systems
  • Embedded system testing
  • Robotics and motion control
  • Digital signal monitoring
  • Custom digital interfaces

Specifications

  • 150mA maximum power consumption at +5V quiescent
  • Digital input/output
    • 4x 82C55
    • 96 I/Os total
    • 0.4V to 3.0V output
    • 0.8V to 2.0V input
    • Input mode (high impedance)
    • User-installed pull-up/pull-down resistors, dual footprint allows pull-up or pull-down configuration
  • Counters
    • 82C54 type
    • 3x counters, 16-bit each
    • Counter 1 - 2MHz (xtal /8) source, tied to +5V gate, with selectable interrupt source
    • Counter 2 - Counter 1 OUT source, tied to +5V gate, with selectable interrupt source
    • Counter 3 - not used
  • Interrupts
    • INTA# - mapped to IRQn via PCI BIOS at boot-time
    • PCI interrupt enable is programmable through the PLX9052 INTCSR register (INTCSR 4-channel)
    • Interrupt polarity
      • High or low level, programmable through PLX9052
      • Rising or falling edge, programmable through PLX9052
  • AT-cut crystal oscillator
    • 16MHz frequency
    • ±100ppm frequency stability
  • Main connector
    • 100-pin high-density Robinson-Nugent type
    • Pinout identical to PCI-DIO96H, compatible with CIO-DIO96H using C100FF-x
  • 0°C to +70°C operating temperature range
  • 136.0mm x 100.6mm x 11.00mm (LxWxH) PCI short card dimensions
Published: 2025-07-23 | Updated: 2025-08-01