Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook

ID 683461
Date 1/21/2022
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4.2.11. PLL Reconfiguration and Dynamic Phase Shift

fPLLs and I/O PLLs support PLL reconfiguration and dynamic phase shift with the following features:

  • PLL reconfiguration—Reconfigure the M, N, and C counters. Able to reconfigure the fractional settings (for fPLL).
  • Dynamic phase shift—Perform positive or negative phase shift. fPLLs support only single phase step in one dynamic phase shift operation, where each phase step is equal to 1/4 of the VCO period. I/O PLLs support multiple phase steps in one dynamic phase shift operation, where each phase step is equal to 1/8 of the VCO period.