A/D converter-FPGA-USB

If you have an oscilloscope, probe the HSMC connector pin and check that you can see a clock there. Alternatively, use SignalTapII - you don't have to use a synchronous clock for this, just use whatever clock is on the DE board to capture the clock pin from the HSMC board. If you do not see toggling, then you are not getting a clock with your data.

Read the data sheet to see what to do with the POWERON signal ... from its name I suspect you need to use it :) Probe the board and see if it is at the correct level to enable the ADC channel.

Cheers,

Dave