Re: Embedded Linux and PCI (over AT91?)

bill.valores@xxxxxxxxx wrote:

I'm currently making the initial design decisions (and hence the most
important ones) about a project, which will involve a processor
running Linux. The project's initial definition is to take data from
an MPEG video chipset and store the stream in a long file on a Disk-on-
Key.

So the concept is simple: Write a driver for whatever video hardware
we're going to choose (still not defined), and make use of the Linux
environment to handle all the USB and filesystem magic. Left on the
todo-list is to write a simple application to copy the data. Neat and
simple. Or so I thought.

The first headache was to choose the processor. I was told that ARM9
is the preferred architecture (for historic reasons, so this issue is
open) and I'm pretty much in favor of Atmel AT91RM9200, mainly because
it appears to have some community mileage (see http://maxim.org.za/at91_26.html
).

And now to the point: I'd like the processor to talk with some of its
peripherals over a PCI bus. For example, the on-chip USB 2.0 is only
full-speed, which may be too slow for a video stream, so I'd like the
option to connect a high-speed USB chipset over the PCI bus (I suppose
such are available).

Have you considered getting an ARM9 with integrated high speed USB ?

For instance:

http://www2.okisemi.com/site/productscatalog/mcumpu/availabledocs/Intro-5430.html
.

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