Introduction - If you have any usage issues, please Google them yourself
This is a very good USB procedures.
Packet : 41695026usb_xilinx_vhdl.zip filelist
firmware.a51
FIRMWARE.HEX
GPL.txt
SRAM.vhd
TBxsp010.vhd
TBxsp010pak.vhd
usbEP0.vhd
usbTSTPAK.vhd
XSP010.vhd
xspCLK.vhd
xspCORE.vhd
xspFPGA.vhd
xspLED.vhd
xspPHY.vhd
xspUC.vhd
xspUSB.vhd