[hpsdr] Ozy with Gb Ethernet

[Eric Blossom]

On Sat, Mar 10, 2007 at 02:32:11PM -0800, Lyle Johnson wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> > Why an Ozy... Well, in looking through the list archives, I found Lyle's
> > message from February 11th calling for project leaders. He mentioned the 
> > Ozy with a Gb Ethernet controller. If there is a better/different idea,
> > I'm open.
> 
> Part of the idea is to be free from a local PC and free from USB.  We'll 
> probably need the FPGA fabric since a configuration with this board 
> probably wouldn't have an Ozy. I didn't mean to restrict it to the same 
> I/O configuration as Ozy (e.g., a port designed to drive an SDR-1000).
> 
> > One thing about a Gb Ethernet board, it's not going to be simple.
> 
> If a Xilinx Virtex-4FX were used as the core processor and FPGA, 
> reference designs exist with 1 Gbps Ethernet. I suspect one of these 
> could be leveraged (e.g., Avnet's DS-KIT-4VFX12LC at http://em.avnet.com).
> 
> Of course, the PowerPC cores in the Virtex won't run WindowsVista, but 
> might run MontaVista :-)
> 
> Neither simple nor cheap, but perhaps interesting?
> 
> 73,
> 
> Lyle KK7P

AFAICT, it requires a GigE PHY chip connected to the FPGA and an
appropriate GigE MAC in the FPGA.

With those in place you can send and receive raw ethernet frames.
With a small amount of additional work, you can read and write UDP
packets. 

Eric K7GNU

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