USB 1.1 enumeration .. XP's EP0 SETUP sequence

已知OK的裝置，USB1.1看enumeration process:

Request. Value(H). Length(L)
0x06   . 0x01    . 0x40  Get Device Descriptor, Length 0x40
0x05   . 0x00    . 0x00         Set Address
0x06   . 0x01    . 0x12         Get Device Descriptor, (again) with accurate length
0x06   . 0x02    . 0x09         Get Configuration Descriptor, 1st 9 byte section.
0x06   . 0x02    . 0xFF         Get Configuration Descriptor, full size
0x06   . 0x03    . 0xFF         Get String ID  1
0x06   . 0x03    . 0xFF         Get String ID  2
0x06   . 0x03    . 0xFF         Get Stirng ID  3
0x06   . 0x03    . 0xFF         Get String ID  4
0x06   . 0x03    . 0xFF         Get String ID  5
0x06   . 0x01    . 0x12         Get Device Descriptor, (again) with accurate length
0x06   . 0x02    . 0x09         Get Configuration Descriptor, 1st 9 bytes section
0x09   . 0x00    . 0x00         Set Configuration

...
次序不一樣，這個device的device descriptor中, iManufacturer=1, iProduct=2.