ID:15778 Mode "<name>" TX "<name>" is using a direct connection from the PLL to the TX channel. For improved jitter, reopen this instantiation in the MegaWizard Plug-In Manager and switch the clocking scheme to use the X4 clocking lines.

CAUSE: The specified CEI gigabit transceiver block (GXB) transmitter is using a direct connection from the PLL to clock the transmitter.

ACTION: Improve jitter by using the MegaWizard Plug-In Manager to change the instantiation to use the X4 clocking lines.