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[usb] help on USB 2.0!



Dear Rudolf,
I am a student of electronic engineering in the University of Palermo (Italy) and I'm working on USB interface!
I'm testing your Core USB 2.0 and I pheraps have found some errors. For example in usbf_defines: the row "define USBF_T1_C_5_MS          7' d50"         I have changed it, in "define USBF_T1_C_5_MS          7' d80".
Further example: in usbf_utmi_ls   I have changed   "reg      [5:0]    idle_cnt_2"   in   "reg       [6:0]    idle_cnt_2"   because idle_cnt_2   wasn't able to count up to 5ms................and so on!
I'm testing your core, but could you suggest me any tool for verifying the IP Core?
Could you give me any suggestions about it?
Besides I'm making a function for interfacing the Core, which manages the data change with a flash memory.
Could you give me suggestions where to find any data?
I thank you
 
Sostene Mannino