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JLee25's avatar
JLee25
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5 years ago

Cyclone 10 Gx FPLL Settings

Hi, I am looking for Cyclone 10GX FPLL data about the values for loop filter resistance, charge pump current... My main application is using Nios II to dynamically change the values but I am ...
JLee25's avatar
JLee25
Icon for Contributor rankContributor
5 years ago

Hi JonWay,

Thank you for the shared data.

What I am trying to know is how to find proper fPLL settings for,

" loop filter resistance, charge pump current..".

I am not able to fine the guidelines like "AN-728".

As my design needs to manually adjust the M values dynamically.

BRs,

Johnson

JonWay_altera's avatar
JonWay_altera
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hi,

The excel sheet has the info of the loop filter resistance and charge pump as well.
Just like IOPLL, these values are auto calculated.

I would suggest that you follow the Youtube how-to to generate the mif, and then compare what are the changes in the loop filter/charge pump.