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Altera_Forum's avatar
Altera_Forum
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14 years ago

how to input an external clock source on DE0 board

I want to input an external 8MHZ clock source to the DE0 FPGA poard, but the DE0 board doesn't have the external clock pin for this. Can I use any other pin or method to realsise this? Thank you for ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

I'm not aware of the clock distribution scheme of your design, but you can basically clock it from CLKIN0 instead of the 50 MHz crystal. If you only want to change the clock frequency without needing synchronicity to an external clock, changing the PLL settings would be the easier way.