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Altera_Forum
Honored Contributor
Honored ContributorCyclone IV PLL Reconfiguration parameter setting
Hi, im using cyclone IV now, and i want to change one of the PLLs output frequence from 3MHz to 99MHz by step 3MHz when FPGA works. I use ALTPLL_RECONFIG IP core, and want to set parameter manua...
Altera_ForumHonored Contributor
Honored ContributorHi,
Few years ago I have filled service request for Altera support asking about those parameters. They answered that they can not share formulas used to calculate PLL bandwidth and loop filter settings, and suggested to use PLL reconfiguration calculator spreadsheet (currently I can not find it). For other parameters see: https://www.altera.com/support/support-resources/operation-and-testing/pll-and-clock-management/pll-basics.html
