ID:23462 In this package, RNRC refclk2 pin for U20 is being shorted to U22 refclk2. To use the pin, make a short/common connection to U22 refclk2

CAUSE: U20 refclk2 is being shorted to U22 refclk2. Any direct assignment to this port might cause unexpected behavior during simulation.

ACTION: Make sure to short the refclk2 port in the top wrapper module or in platform_designer.qsys.