The Versal ACAP GTM transceiver provides great flexibility by allowing users to dynamically change the operating line rate. To ensure all attributes are correctly configured during the rate change, Xilinx recommends generating wrappers from the Versal ACAPs Transceivers Wizard (Wizard) that allows the designer to preconfigure a set of line rates at which the device is intended to operate.
When a rate change is performed using the CH*_TXRATE or CH*_RXRATE port to any of the preconfigured line rates set using the Wizard, the required reset sequence and necessary attribute update is performed automatically. The user should wait for the assertion of CH*_TXRESETDONE or CH*_RXRESETDONE as an indication that the current rate change process and necessary reset sequence have completed.