The Engineering Design Team PCI CDa LVDS is a high-performance PCI interface module for demanding data acquisition and control applications. It delivers high-speed DMA and synchronous I/O operations, enabling efficient data transfer between external devices and host computer memory. The module achieves precise timing and high data throughput through integrated FIFOs, configurable FPGA firmware, and flexible clocking options. It supports multiple channel configurations and protocols, making it suitable for complex instrumentation and real-time systems.
Technical Specifications
Interface & Bus Compliance
• PCI local bus, PCI-X compatible
• PCI 2.1 compliant, 33 MHz and 33/66 MHz operation
• 33 MHz operation may reduce data rates
FPGA & Signaling
• Xilinx Spartan IIE FPGA standard
• Optional Xilinx XC2S600E for 16-channel capability
• LVDS (EIA-644) or optional RS-422 signaling
• All I/O signals are differential
Channel Configuration
• Single-channel 16-bit parallel
• Optional: 16 synchronous serial channels
• Optional: 8 synchronous serial channels
• Optional: 4-channel synchronous serial protocol
• Optional: 8-bit parallel protocol
• Optional: 32-bit parallel channel
Data Rates
• Up to 210 MB/s (single 16-bit channel at 66 MHz PCI)
• Up to 70 Mb/s per channel (16 channels)
Memory & Protocol
• Integrated input/output FIFOs for buffering
• Synchronous hardware protocol with transmitted clock
• Sample clock generated by DMA interface, user device, or both
• Hardware-queued DMA transfers minimize FIFO requirements
Firmware
• Xilinx FPGA-based configuration
• Firmware files provided
• Source VHDL available for custom designs
– Key Features
• High-speed DMA channel for continuous host memory transfers
• Flexible clock sourcing reduces external timing complexity
• Configurable channel counts and data widths
• Differential signaling for noise immunity in demanding environments
– Physical & Power
• Single PCI local bus slot form factor
• Operates in 3.3 V or 5 V PCI slots
• PCI CD-60 reference dimensions: 3.3″ × 5.78″ × 0.5″
– Compatibility & Integration
• Device drivers available for Linux and Windows
• Host integration via standard PCI local bus
• External connectivity through LVDS or RS-422 interfaces
