Although some FX1-based devices may use the FX1鈥檚 CPU
to process USB data directly (Port I/O Mode), most applica-
tions use the FX1 simply as a conduit between the USB and
external data-processing logic (e.g., an ASIC or DSP, or the
IDE controller on a hard disk drive).
This is a PCI to USB bridge schematic that i was draw by hand from a PCI to USB card, the schematic use VT6212L to make bridge, the idear is that we can use microcontroler interface to PC through PCI slot by USB, ha ha it is too easy.
