PCI CD-20

PCI CD-20
RS-422 interface for PCI

The PCI CD-20 has been discontinued and is no longer available. The PCI CDa usually can be used in its place.

The information on this page is provided for use by existing customers; however, our ability to provide ongoing support is limited.

>Features
  • Transfer rates up to 20 MB per second
  • 4 KByte FIFO
  • Implements a high-speed DMA channel between an external device and a PCI computer
  • RS-422 driver/receivers
  • Customizable by a RAM-based programmable gate array
  • Synchronous protocol
  • Clock timing from DMA interface, user device, or both
  • Device drivers for Linux and Windows
  • Single PCI bus slot
  • PMC version also available
>Description

The PCI CD-20 interface provides a high speed 16-bit parallel DMA channel between an external device and a PCI bus computer. The device interface uses RS422 compatible driver/receivers connected to a RAM-based programmable gate array and 4 KByte FlFOs. The PCI CD-20 uses direct virtual memory access (DVMA) and asynchronous I/O to achieve transfer rates to or from memory of up to 20 MB per second. The hardware protocol is synchronous. That is, all data and control signals are sampled with a clock transmitted along with the data and control signals. This clock may be generated by the DMA interface or the user device or both. All signals are differential using RS422 specifications. The PCI CD-20 includes a versatile, straightforward protocol but optional customer-specific protocols may be developed.

>Applications
  • Telecom receivers
  • Simulation
  • Imaging devices
  • Scanners
  • Plotters
  • Device control
  • Research and development
  • General purpose data acquisition
>Software

Device drivers for supported operating systems are included with the PCI CD-20. The drivers provide access to the PCI CD-20 through standard and asynchronous read and write system calls. Continuous transfers are implemented with asynchronous I/O.

Support

EDT provides several levels of customer support, from phone consultation to custom design of hardware, firmware, or software, at hourly rates. Technical support is also provided though the Technical Information section of this web site.

>Specifications

PCI Bus compliance

PCI 2.1s
33Mhz
32 bits

Device interface

Protocol:

Synchronous streaming

Buffers:

4 KB FIFO for input 4 KB FIFO for output

Connectors:

AMP 787190-8 (mates with AMP 749621-8, backshell 749196-2)

Environmental

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

Physical

Single standard PCI bus slot
Dimensions: 3.3″ x 5.78″ x 0.5″
Weight: 3.5 oz.

Power

1.2A at 5 volts
(can operate in either a 3.3v or 5v slot)

Software

Device drivers for Linux and Windows
Standard read/write system call support
Asynchronous I/O support for continuous transfers


Related Products

PCI CDa

PCI CDa

High-speed DMA I/O board, providing one high-speed 16-bit parallel channel or an optional 16 synchronous serial channels between an external device and a PCI local bus computer (or optional 16-channel* synchronous serial interface). Uses LVDS- or RS422-compatible driver/receivers connected to a field-programmable gate array (FPGA).
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