The GT Wizard offers flexibility by enabling you to dynamically adjust the
operating line rate. Based on the configuration provided in the GT Wizard, all
attributes are set during the rate adjustment process. Rate changes can be executed by
toggling the INTF*_TX_ch_txrate and INTF*_RX_ch_rxrate ports to any of the pre-configured rates
available in the GT Wizard. You should wait for the assertion of the INTF*_rst_tx_done_out and INTF*_rst_rx_done_out signals as an indication that the current rate
change process has been completed.
If the reference clock frequency remains unchanged, you can use the rate change ports for the adjustment process. For GTYE5 and GTYP variants, if the reference clock frequency is altered either on the same reference clock port or on a different one, you must ensure adherence to the rate change sequence outlined in Versal Adaptive SoC GTY and GTYP Transceivers Architecture Manual (AM002) by using GPI and GPO ports.
For GTME5 variant, the rate change sequence can be achieved by using rate ports on the GT Wizard subsystem even if the reference clock frequency is altered. GTME5 variant doesn't need GPI and GPO ports for rate change sequence unlike GTYE5 and GTYP variants. For additional details, refer to the rate change sequence outlined in Versal Adaptive SoC GTM Transceivers Architecture Manual (AM017).