On Sun, Aug 3, 2008 at 3:32 PM, Eric A. Cottrell <[EMAIL PROTECTED]> wrote: > Philip Balister wrote: >> >> On Fri, Aug 1, 2008 at 6:31 PM, Eric Brombaugh <[EMAIL PROTECTED]> >> wrote: >> >>> >>> On Aug 1, 2008, at 1:58 PM, Philip Balister wrote: >>> >>>> >>>> I've been talking to a friend (he knows FPGA stuff much better than >>>> me) about using the expansion port to communicate with an FPGA via a >>>> SDIO interface. I don't think we can beat the current USRP data rate, >>>> but we should be able to reduce the latency introduced by the USB >>>> interface. >>>> >>> >>> Looks like the SDIO ports run up to 50MHz and have 8-bit wide data. No >>> idea >>> how much overhead there is in that, but it might be able to go a bit >>> faster >>> than USB2.0 and as you note would have a lot less latency. Hook up to a >>> decent FPGA and you could cram a bit of external pre-processing in as >>> well. >>> I picked up one of the Avnet Xilinx Spartan 3A boards for $50 that would >>> probably work well for that. >>> >> >> We are hoping to create a board with a reasonable FPGA that works with >> existing USRP daughterboards. This would make a really neat system for >> small SDR nodes. I'll be sure to keep you updated on out progress. >> >> Using an existing dev board for developing the beagle to FPGA >> interface is a really good idea, thanks for suggesting it! >> >> Philip >> > > Hello, > > Since I have some receive only applications I would like to see a box that > took one RX or a RX/TX set of USRP daughterboard(s). > > The OMAP has some interesting interfaces and I wonder if some of them could > be adapted for a more general I/O use. I am more familiar with the earlier > versions of the OMAP. It will be nice to use the DSP for some signal blocks > and use the ARM for more general UI and I/O blocks.
We made a list to discuss our Beagle/FPGA project. You can subscribe by sending an email to [EMAIL PROTECTED] We are definitively open to ideas and suggestions. Philip _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
