Does anyone have any experience using USB to SPI? I know USB to serial is commonplace but I have an application that needs a high speed SPI master, and going to serial and then to SPI would be too slow. The FT2232 is alleged to have an SPI mode on one channel, and I found a Cypress PSOC application note. I could use an AT90USBxxx, but I'm on a tight schedule and prefer not to have to develop the code from scratch. I heard rumors of a PIC solution, but I don't want to go there :?
So I thought I'd ask here and see if anyone has already done it.