Hello folks,

I have designed a customized PCB board based on the evaluation kit ZC7020 of Xilinx. And I am having issued to run the Flash with the preescaler x2 (maximum speed) in my customized board. The same flash chip and same configuration works perfect in the ZC7020. my customized board only achieves x8 o bigger preescaler configurations. I have already checked signal integrity and it is fine to that speed. I am always read 0x0000.
Anyone knows anything about this?