ALTPLL (Phase-Locked Loop) IP Core User Guide

ID 683732
Date 6/16/2017
Document Table of Contents

Advanced PLL Parameters

The ALTPLL parameter editor provides an option for you to generate output files using the ALTPLL advanced parameters. Examples of advanced parameters are charge_pump_current, loop_filter_r, and loop_filter_c. This option is supported in all Altera devices.

This option is intended for advanced users who know the exact details of their PLL configuration and for users who understand the parameters well enough to set them optimally. The files generated are not intended to be re-used by the ALTPLL parameter editor, because after the ALTPLL IP core output files are specified using the advanced parameters, the Quartus® Prime compiler cannot change them. For example, the compiler cannot perform optimization. Thus, your design cannot benefit from improved algorithms to pick better settings or to make changes to some settings that the ALTPLL parameter editor finds to be incompatible with your design.