Hi
thank you for the suggestions. German is not a problem so I will take a look on the links you have posted @xc6lx45
Our purpose is to use our own on-board FT2232H chip and omit any additional HW. Currently we have designed an adapter where the Xilinx programmer can be attached to but some products are/will be placed in a housing which will later no longer be accessible. The only "visible" connector would be the one of the USB.
Regards
Valentin