12-29-2020 03:03 PM
Hello, I am designing a board with an Zynq Ultrascale+ MPSOC XCZU7CG-1FFVC1517I. I am deciding the frequency of the PS Reference Clock and see that on many of the Development boards they use 33.33Mhz. I would like to use 60Mhz. Is there a reason why so many Dev Boards choose 33.33Mhz?
I'm choosing 60Mhz so I'm able to get better clock resolution when I have the PS generate clocks for the PL side.
01-19-2021 07:44 AM
The Data Sheet has a section on the PS REFCLK requirements : https://www.xilinx.com/support/documentation/data_sheets/ds925-zynq-ultrascale-plus.pdf
You just need to ensure your choice meets the requirements.