Sorry, but my question was not clear en ought.
I understand the SETUDAT from Firmware FX2LP18 side.
What i need to know, is HOW can i managed it from USB Host Side using your SDK (Lib / dll / etc ...) ?
Using the C# project from the AN.
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Please refer to the below example snippet:
The length parameter (SETUPDAT[6:7] = wLength) of the control transfer will be taken from the second parameter in the XferData() call.
In the above example the length SETUPDAT[6:7] will be equal to len.
Please let me know if you have any more queries.
Crystal Clear : THANKS !