Why doesn't the IOPLL dynamic phase shift feature work on Arria® 10 and Cyclone® 10 GX devices?

You may see that the IOPLL dynamic phase shift feature does not work as expected in Arria® 10 and Cyclone® 10 GX devices when both “access to dynamic phase shift ports” and “dynamic reconfiguration of PLL” options are enabled in the IOPLL FPGA IP.

This is because the IOPLL FPGA IP does not simultaneously support the dynamic reconfiguration and the direct phase shift feature.

As a workaround, you can still implement the IOPLL phase shift feature using the reconfiguration ports.

A warning message will be issued in the IP if both options are selected in a future version of the Quartus® Prime Pro software.