Change of Clock setting on ZYBO

[Nan-Sheng]

Hi, 

 

We use ZYBO for the application and the mastering clock is 125MHz from  pin L16. However, if we would like to speed up to 150MHz or lower to 80MHz. What can we do? Would you please guide me on how to modify the clock source or speed on ZYBO? Is there any similar example?  Thanks

[jpeyron]

Hi @Nan-Sheng,

Please give more details about your project. I.E.  HDL or ZYNQ processor? IP Cores? external peripherals?

In section 12 Clock Sources of the reference manual here it describes the clocking options. If you are using HDL(VHDL/Verilog) you can use the clocking wizard to generate your desired frequencies. 

If you are using the ZYNQ processor you can add an addition clock in the PL that will be accessible in the block design. 

thank you,

Jon