Honored Contributor
Honored ContributorWhat have you setup for the clock source?
Page 2 of the schematic has the ADC. There is a POWERON signal, and ADC_CLKA and ADC_CLKB clocks. Have you got something driving those signals? The ADC_CLKA and ADC_CLKB signals come from the headers JP1 and JP2. Which jumper do you have attached? Do you have an input signal attached? If you do not, then the ADC will sample whatever the center tap value is. Assuming the ADC outputs in 2's compliment format, that could be zero (0) or all ones (-1). Cheers, Dave
