Re: Bridges

["Peter Marek" <peter.marek@marekmicro.de>]

Hi,

you need to use a PCI interface chip which supports bus mastering. The data
might either be transfered between the DSP and the PCI bus (which includes
host memory) by issuing direct writes by the DSP or using a DMA controller
in the PCI ínterface chip. The later is the prefered solution.

There are a couple of vendors for such PCI interface chips. FPGA base
solutions are also possible. QuickLogic has a mixture of both, an FPGA with
built in PCI interface macro. Such a chip might help to interface gluelessly
to your dsp. Saves costs and increases performance.

regards,

Peter Marek
General Director
MarekMicro GmbH
tel.: 049-9621-9732-110
fax: 049-9621-9732-199
www.marekmicro.de

----- Original Message -----
From: "Dhaliwal, Jaswinder" <Jaswinder.Dhaliwal@eu.anritsu.com>
To: <pci-sig@znyx.com>
Sent: Thursday, November 07, 2002 3:34 PM
Subject: Bridges


> Hi
>
> I'm new to PCI/cPCI so these questions might be bit insulting to the
> Intelligent people on the list.
>
> Setting the scene..
> If I have a cPCI system card (CPU has it's own Host/PCI bridge) with some
> embedded PCI devices( Bus 0) as well as a transparent PCI-to-PCI bridge to
> give me the compact PCI slots (Bus 1)
>
> If we design a peripheral master card with a DSP on board. What sort of
> bridge
> should I use on this card to interface to the cPCI (bus 1)?
>
> I know I can access the memory on the peripheral card from System Card
> (memory map etc)but can I use the peripheral card to access the
> main mem on the System Card? How does this work ?
>
> Can somebody point me to some online info.
>
> jaz
>
>
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