The options can be set through the first DWORD of the table (shown in bold below)
| [FtdiPort232.NT.HW.AddReg]
|
| HKR,,"ConfigData",1,01,00,3F,3F,10,27,88,13,C4,09,E2,04,71,02,38,41,9C,80,4E,C0,34,00,1A,00,0D,00,06,40,03,80,00,00,D0,80
|
This entry is byte-reversed, so MSB the DWORD reads 3F 3F 00 01 and the least significant bit is Bit 0. The values are given as follows:
Bits 16 - 23: Receive transfer size
Bits 24 - 31: Transmit transfer size
The maximum value permitted in each case is 3F this is the standard default value.
The transfer size in bytes may be calculated as
| Transfer size in bytes = (Transfer size entry + 1) * 0x40
|
The USB transfer sizes used by a device are located in the registry under
| HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\FTDIBUS\{Device VID, PID and serial number}\0000\Device Parameters\ConfigData
|