I've been looking into finding a USB host controller that will work with blackfin and the only one I've been able to find that meets the industrial temp range and that I believe is supported is the Renesas R8A66597DFP. I can't find too much information about this particular HC being implemented in any blackfin linux environment. I'm wondering if there are any better alternatives that more people have been using. I've found that the ISP1760 would do the job, but I can't seem to find it anywhere and digikey has yet to get back to me about a suitable replacement part.
If there is anyone who has used the Renesas part, are there any special harware interconnect requirements, especially regarding the DMA requests??