https://docs.amd.com/r/en-US/pg182-gtwizard-ultrascale/Special-GTH-Transceiver-CPLL-Reset-Requirements-for-Engineering-Sample-ES1-or-ES2-UltraScale-Devices
Special GTH Transceiver CPLL Reset Requirements for Engineering Sample (ES1 or ES2) UltraScale...
In GTH transceiver configurations targeting engineering sample (ES1 or ES2) UltraScale devices where the CPLL is used as either the transmitter PLL type,...