I dont other than we have the dev kit because we were looking at using it, and might still use it but the ADI Blackfin has a USB HighSpeed OTG, and thats what we will end up using hopefully. On the drivers, I meant the standard windows drivers. The issue dealt with isochronous transfers rathter than bulk transfers, ie...streaming video stuff. Since I do hardware for this project, the software guys are ending up having to figure out how the USB works, running uClinuix on it. Somedays im glad to be more hardware centric Herbert Graf wrote: On Tue, 2007-10-23 at 11:25 -0700, alan smith wrote: > You need a HighSpeed USB chip. Cypress makes a couple....EZ-USB I think (have to look at the dev kit for sure...but its in the lab), and I think that Silicon Labs also makes one. Do you have experience using that chip? Which one specifically? > But your drivers and hardware on the PC side also need to support that. I don't think the stock USB drivers from Winders does, or at least in the isochrounous transfer format. I'm not sure I understand this bit. Do you mean the USB drivers Cypress includes (which scares me right there...) doesn't support HighSpeed mode? Does what I'm looking for just not exist? FWIW I'm perfectly happy with bulk mode, the FPGA has the appropriate circuitry and FIFOs to deal with a bursty link. Thanks, TTYL -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist