Re: [Discuss-gnuradio] GNU Radio on ARM

The last multimode MAC/PHY I worked with required major upheaval to
support 10/100. Different clocks required and everything.

--
Principal Investigator
Shirleys Bay Radio
Astronomy Consortium
http://www.sbrac.org

On Oct 8, 2010, at 8:54 PM, Elvis Dowson <elvis.dowson@mac.com> wrote:

> Hi Marcus,
>
> On Oct 9, 2010, at 4:44 AM, Marcus D. Leech wrote:
>
>> Not to be a wet-blanket or anything, but the USRP2 requires 1GiGe.
>> The
>> PHY/MAC isn't set up to negotiate 100Mbit. To support
>> USRP2, you need a 1GiGE interface. That's part of the reason I went
>> with the Sheeva Plug--it has 1GiGe. But it doesn't have floating
>> point :-(
>
> I wasn't aware of that. Perhaps in this special case, the PHY/MAC
> FPGA code could be reprogrammed to operate at 100Mbit, just to make
> it work with the Overo?
>
> If that is sufficient bandwidth would depend upon the application,
> but it is an interesting experiment to try out.
>
> I already got GNU Radio running on the Mac from sources. I also have
> been working on the Gumstix Overo for about 2 years now with
> OpenEmbedded, so it should be interesting just to port it across and
> run it off the overo.
>
> Elvis Dowson
>

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