Why does the insertion loss range of the VSR_HIGH_LOSS and VSR_LOW_LOSS parameters in the F-Tile Architecture and PMA, and the FEC Direct PHY IP User Guide "3.12.2. FGT PMA Settings" change in the Quartus® Prime Pro Edition software version 24.2? - Why does the insertion loss range of the VSR_HIGH_LOSS and VSR_LOW_LOSS parameters in the F-Tile Architecture and PMA, and the FEC Direct PHY IP User Guide "3.12.2. FGT PMA Settings" change in the Quartus® Prime Pro Edition software version 24.2? Description VSR mode settings in the F-Tile Architecture and PMA and FEC Direct PHY IP User Guide “3.12.2 FGT PMA Settings” [version 24.1] VSR mode is set when insertion loss < 10dB, RX auto adaptation is ON for >= 23 Gbps NRZ or any PAM4 rate: For Insertion Loss < 5 dB: set_instance_assignment -name HSSI_PARAMETER "vsr_mode=VSR_MODE_LOW_LOSS" - to <RX_SERIAL_PIN> -entity <TOP_LEVEL_NAME> For Insertion Loss > 5 dB but < 10 dB: set_instance_assignment -name HSSI_PARAMETER "vsr_mode=VSR_MODE_HIGH_LOSS" - to <RX_SERIAL_PIN> -entity <TOP_LEVEL_NAME> Else VSR_MODE_DISABLE is set by default by the Quartus® Prime Pro Edition software for rates below < 23 Gbps, where VSR is not required. [version 24.2 and onward] VSR Mode for NRZ: Data Rate >= 23 Gbps and Insertion Loss <= 10 dB: set_instance_assignment -name HSSI_PARAMETER "vsr_mode=VSR_MODE_LOW_LOSS" - to <RX_SERIAL_PIN> -entity <TOP_LEVEL_NAME> Others: set_instance_assignment -name HSSI_PARAMETER "vsr_mode=VSR_MODE_DISABLE" -to <RX_SERIAL_PIN> -entity <TOP_LEVEL_NAME> Resolution The change is not dependent on the Quartus® Prime Pro Edition software version. It is due to more validation data regarding VSR mode in NRZ and PAM4, showing a more accurate understanding of the insertion loss relationship with VSR mode. Custom Fields values: ['novalue'] Troubleshooting 15015827094, 14022102961 False ['F-Tile PMA/FEC Direct PHY IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] No plan to fix 24.2 ['Agilex™ 7 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']