Hi
I downloaded the XDC file from the following location:
https://github.com/Digilent/digilent-xdc/blob/master/Eclypse-Z7-Master.xdc
I see contradictions between the file and the schematics of the board.
I downloaded a reference design which includes the PS (pod-adc-ltc2264).
From the XDC file of the design there is a pin B7 for adc_out1_p which do not appear in the above file.
I took the design because I didn't find any other reference design which include a PS configuration (DDR, flash and other ports).
Also, as I understand the ZMOD ADC include one ADC but the outputs from ADC A are not connected and instead the outputs from both ADC's are multiplexed as function of DCO state from ADC B
Regards
Omer