ID:186501 GXB receiver channel <name> in XAUI mode has the coreclk selected at the rate matching FIFO. This is illegal.
CAUSE: The specified gigabit transceiver block (GXB) receiver channel in XAUI mode has its coreclk
signal selected at the rate matching FIFO. This configuration is illegal.
ACTION: Modify the design so that the specified GXB receiver does not have its coreclk
signal selected at the rate matching FIFO.