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

ID 683777
Date 9/26/2022
Document Table of Contents Manual Clock Switchover

The Intel® Cyclone® 10 LP PLLs support manual switchover, in which the clkswitch signal controls whether inclk0 or inclk1 is the input clock to the PLL. The characteristics of a manual switchover are similar to the manual override feature in an automatic clock switchover, in which the switchover circuit is edge-sensitive. When the clkswitch signal goes high, the switchover sequence starts. The falling edge of the clkswitch signal does not cause the circuit to switch back to the previous input clock.

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