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jiec's avatar
jiec
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2 years ago
Solved

Cyclone Ⅳ PLL Output Clock Frequency not Right

Hi, I am using the chip EP4CE15M8I7N, andi tried to use PLL in ip-core, but the frequency of the clock output is wrong. The frequency of the input clock is 50MHz, and what the frequency of the outpu...
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  • FvM's avatar
    FvM
    2 years ago
    Hi,
    low frequency PLL output is usually indicating missing input clock. I suspect wrong pin assignment or similar.

    Regards
    Frank
jiec's avatar
jiec
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2 years ago

Hi,Frank

Thanks for your reply, I am trying to solve this problem by your suggestion, and I will reply u again in few days, Thanks again!

Jiec