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Jan_AM's avatar
Jan_AM
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5 years ago

Cyclone V A7; PLL temperature Issue

Hello, We use the Cyclone V "5CEFA7U19A7N" on a PCB with a 25MHz clock, which is redundantly driven on two PINS of the FPGA (same oscillator). The clock is fed by a MEMS oscillator via a hardware ...
EngWei_O_Intel's avatar
EngWei_O_Intel
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5 years ago

Hi Jan

From your description, are you using 2 dedicated clock pins as refclk to 7 PLLs?

What is the temperature when we referring to warm up and cool down? How did you warm up or cool down the board? How do you narrow down the issue is on the PLL itself when the PCB is warming up and cooling down, as the board has multiple components, have we check if the failure is not on the clock source or components like regulator?

Thanks.

Eng Wei

  • EngWei_O_Intel's avatar
    EngWei_O_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    5 years ago

    Hi Jan

    We do not receive any response from you to the previous reply that have been provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

    Eng Wei