ID:15793 Input port <name> of GXB Central Control Unit atom "<name>" must be connected only to an input pin

CAUSE: The specified port of the specified gigabit transceiver block (GXB) Central Control Unit atom is connected; however, the port is not connected to an input pin. The specified port must be connected to an input pin.

ACTION: Disconnect the specified port of the GXB Central Control Unit atom, or connect the port to an input pin.