ID:176317 I/O assignment analysis allows pin "<name>" assigned to dedicated GXB Reference clock pin location <name> (<name>) to not feed the clock input port of a GXB transmitter PLL or the cruclk input port of a GXB receiver. However, to successfully run the Fitter, pin "<name>" must feed the clock input port of a GXB transmitter PLL or the cruclk input port of a GXB receiver.

CAUSE: You ran the Fitter with the specified pin assigned to the specified gigabit transceiver block (GXB) reference clock pin location. However, the specified pin does not feed the clock input port of a GXB transmitter PLL or the cruclk input port of a GXB receiver. The I/O assignment analysis flow continues to run, but this error causes fitting to fail. The specified pin must feed the clock input port of a GXB transmitter PLL or the cruclk input port of a GXB receiver.

ACTION: Remove the pin assignment, or feed the pin to the clock input port of a GXB transmitter PLL or the cruclk input port of a GXB receiver.