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can I change the reference clock for Dynamic Clock Generator?


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Hello @theUltimateSource,

I'm sorry for the late reply. The  Dynamic Clock Generator ip core is generally used in video applications. As it names says, it can dynamically adjust the frequency, a more common term would be "on the fly",  depending on your actual needs. For example you can use it for changing the frequency of a pixel clock signal. I think that this specific ip core simulate the behavioral of an phase looked loop control system. And for this kind of control systems the ref clock input has to be a free running one with a fixed frequency that in most cases is directly inputted  from sys-clock pins. For more details on how exactly we used this core, please check the fallowing project : https://reference.digilentinc.com/learn/programmable-logic/tutorials/zybo-z7-hdmi-demo/start 

Best Regards,

Bogdan Vanca

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