Re: [Discuss-gnuradio] Interested in joining the hardware project

[Eric Blossom]

On Sat, Mar 15, 2003 at 06:06:34PM -0800, Arrigo Benedetti wrote:
> Hermann Gausterer wrote:
> >On Sat, Mar 15, 2003 at 01:19:05PM -0800, Arrigo Benedetti wrote:

> If the aim of this project is to get to a working board as quickly
> as possible, then using another IC for the PCI interface may be a
> good idea. PLX is a company that makes these chips:
>
> http://www.plxtech.com/products/9030/default.htm

FWIW, the Measurement Computing PCI-DAS 4020/12 that we're currently
using uses the PLX 9080 as the PCI interface.  Nice part, good docs,
bus mastering, scatter gather, and we've already got a linux driver
that talks to it (mc4020-0.6.tar.gz)

> I've read in previous posting someone suggesting that this board would 
> have a USB interface instead of PCI.
> opencores.org has an USB2 (480 Mb/s) core. What sampling frequency are 
> you targeting?

The current limiting factor is the host controller.  The USB card
can saturate the USB.

Eric