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Altera_Forum's avatar
Altera_Forum
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9 years ago

altpll "loop filter resistance" parameter: resistance to filtercap or to charge pump?

Hi, the altpll reconfiguration interface has a parameter called "loop filter resistance". Is this the resistance imposed between the charge pump and the VCO control node, or is it the resistanc...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

It would be R1. See attached .jpg. You would think this would be in the altpll user guide, but alas it is not.