Synchronous serial interface for PCI

The PCI GP-SSD has been discontinued and is no longer supported; the information below is for reference only. For comparable products, see EDT’s FPGA I/O products.

  • Serial rates up to 60 Mbits/sec (4 channel), 4 Mbits/sec (16 channel)
  • Independent clock per channel
  • Standard RS-422 or EIA-644 (LVDS), driver/receivers, or optionally RS-485 (please specify when ordering)
  • Compatible with PCI platforms running Linux or Windows
  • Single PCI Local Bus slot
  • Monitoring serial data communications
  • Telecom receiver

The PCI GP-SSD is a family of synchronous serial interfaces. It can be ordered with RS-422, or EIA-644 (LVDS) drivers and receivers and preconfigured for 4 or 16 channels (4 channels is faster), or converted from one to the other in the field through a firmware download.

Two 4-channel modes are provided. In SSD4 mode, there are 1, 2 or 4 data bits plus 1 clock per channel, input only. In SSD4IO mode, there is 1 data bit plus 1 clock per channel, each channel independently selected as input or output.

When configured for 16 channels, there is 1 clock and 1 data bit per channel. In 16 channel mode, channels are programmed for either input or output in groups of four as follows: 0-3, 4-7, 8-11, and 12-15. The data is sampled on the rising edge of the clock and stored in the host computer memory by the PCI GP-SSD DMA. Data from each channel is stored in a different region of host memory.


Device drivers for Linux and Windows are included with the PCI GP-SSD. The drivers provide access to the PCI through standard and asynchronous read and write system calls. A DMA ring buffer management library is provided for high speed continuous transfers. Example and utility programs written in the ‘C’ language are also provided.


Custom cable assemblies suited to your application can be provided. click here for a list of standard EDT cable assemblies.


When ordering, specify either 4- or 16-channel configuration, as well as signal level: RS422, EIA-644 (LVDS), or RS485. For ECL, order the PCI GP-ECL.


PCI Local Bus Compliance

PCI 2.1s
32 bits
Data transfer protocol: synchronous
Transfer 1, 2, or 4 separate


2 A @ 5 volts


Temperature: Operating, 10° to 40° C; non-operating, -20° to 60° C
Humidity: Operating, 20% to 80% noncondensing at 40° C; non-operating, 95% noncondensing at 40° C


Single standard PCI bus slot
Dimensions: 3.9″ x 5.05″ x 0.5″
Weight: 3.8 oz.

Related Products



The PCI GP-ECL is discontinued and no longer supported; the information below is provided for reference only. Please see the ECL / LVDS-E / RS422-E, which has superseded this product. >Features 1-4 or 16 channels 1-4 data bits per channel (4… Read more »



The PCI GP-SSE is a legacy product, with limited availablity to existing customers only. Please see the SSE Mezzanine which has superseded this product. >Features 2 channels (one in/out, one in only) 1 data bit per channel ECL compatible driver/receivers… Read more »