Re: [Discuss-gnuradio] GNU Radio on ARM

[Marcus D. Leech]

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 <address@hidden> 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