CDA CD 60 Guia do Utilizador descarregar pdf (Página 4)

EDT, Inc. May 2007 1

PCD8 8-bit DMA Interface

The PCD8 8-bit DMA Interface implements a high-speed DMA channel between an external device

and the PCI Bus host computer for the PCI SS/GS or PCI CD/CDa main boards. This document

describes modifications made to the main board firmware to implement this eight-bit bidirectional

parallel interface.

To use this interface, the PCI SS/GS main board requires an RS-422, LVDS, or ECL mezzanine board;

the PCI CD/CDa comes in either LVDS or RS-422 versions and requires no mezzanine board. Both

main boards require you to load the PCI Xilinx with the single-channel FPGA configuration file

appropriate for the board, and the user interface Xilinx with the appropriate PCD8 FPGA configuration

file.

The eight-bit Interface comprises eight input signals and eight output signals, which can transfer one

byte per clock cycle in each direction independently. The interface signals are the same as the

PCI CD/CDa signals, except that the high-order eight signals are changed to output signals and the

low-order eight are input signals.

You can use the PCD8 with the normal PCI CD/CDa cable.

Related Documents

The following related publications may prove useful:

Document URL

EDT DMA & Digital Video Software Library www.edt.com/api (HTML)

EDT DMA & Digital Video Software Library www.edt.com/manuals/misc/api.pdf (PDF)

PCI SS/GS Main Board User’s Guide www.edt.com/manuals/PCD/pciss_gs.pdf

PCI CD/CDa User’s Guide www.edt.com/manuals/PCD/pcicd.pdf

About the DMA Interface

The PCD8 implements the DMA interface using two field-programmable gate arrays (FPGAs), referred

to as the PCI FPGA and the UI (user interface) FPGA:

1 2 3 4 5 6 7 8 9 ... 13 14

Sem comentários

CDA CD 60 Guia do Utilizador Página 4