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Praxis_Kernfeld's avatar
Praxis_Kernfeld
Icon for New Contributor rankNew Contributor
2 months ago

Fitter Error with Clock Switchover Enabled in Altera PLL (Normal Mode)

Hi everyone, I ran into the following Fitter Error when enabling Clock Switchover on an Altera PLL in Normal mode: Error (14996): The Fitter failed to find a legal placement for all periphery comp...
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Ash_R_Altera's avatar
Ash_R_Altera
Icon for Regular Contributor rankRegular Contributor
2 months ago

Hi,

Thanks for the design. I am able to reproduce the issue. Till now I could figure out that the issue is mainly due to the location which you are trying to use. If I disable the pin constraints and let the tool allocate it, is goes through the compilation. With this first thing that I would like to check with you is whether the input clock pin constraints are hard requirement for you or there is a flexibility to move to some other pins.

Let me know please.

 

Regards