PCI-HPDI32A-1M General Standards High-Speed Parallel Digital I/O PCI Board

The General Standards PCI-HPDI32A High-Speed Parallel Digital I/O PCI Board provides for data I/O via the cable at 80 MB per second (RS422/485 differential I/O) or 200 MB per second (Pseudo ECL Differential I/O) and can transfer data indefinitely without host intervention. The board employs General Standards' high performance PCI-DMA (PLX) engine. The PCI-DMA is easily set up and operated by writing only a few programming instruction statements to the board. Once the link between the PCI-HPDI32A board and the external customer device is established, the desired data transfers between the two devices are performed and are transparent to the user. The board employs differential (RS-422/485) or Pseudo ECL transceivers and the data path is 32 bits wide.

The PCI-HPDI32A board includes the PCI-DMA engine, FIFO memory, a 32-Bit cable input/output controller, and cable receivers (Differential Pseudo ECL or RS-422/485). The DMA engine is capable of transferring data to host memory using D32 block transfers; while the FIFO memory provides continuous transmission of data without interrupting the DMA transfers or requiring intervention from the Host CPU. After the DMA is initialized and started, the Host CPU will be free to proceed with other duties and will need to only respond to interrupts. The board also includes interrupt generation for interface flexibility and end-of-transfer indication. Interrupts are also available to indicate FIFO status (Transmit and Receive FIFO almost-empty and almost-full), cable status, and frame and line valid for easy manipulation of the cable interface. The PCI-HPDI32A also offers 7 Bi-directional signals that can be customized to accommodate almost any handshaking protocol. General Standards routinely modifies the cable protocol to meet the customer's exact interface protocol.