Error: Standard RX/TX PCS Parameter 'hd_pcs8g_digi_rx/tx_byte_deserializer' is set to an illegal value of 'en_bds/bs_by_2'. This mode is not supported with device speed grade of '8_H6', PMA WIDTH of 'twenty_bit' on atom. - Error: Standard RX/TX PCS Parameter 'hd_pcs8g_digi_rx/tx_byte_deserializer' is set to an illegal value of 'en_bds/bs_by_2'. This mode is not supported with device speed grade of '8_H6', PMA WIDTH of 'twenty_bit' on atom. Description You may see the following Quartus® II software fitter error when using the transceiver PHY instance, and the “enable Byte Serializer/Deserializer with 16- and 20-Bit PMA-PCS Widths” option is selected on Cyclone® V GX/SX, -6 transceiver, and -8 device speed grade devices. Error: Standard RX PCS Parameter 'hd_pcs8g_digi_rx_byte_deserializer' is set to an illegal value of 'en_bds_by_2'. This mode is not supported with device speed grade of '8_H6', PMA WIDTH of 'twenty_bit' on atom '<variation name>|av_hssi_8g_rx_pcs_rbc:inst_av_hssi_8g_rx_pcs|wys'. Error: Standard TX PCS Parameter 'hd_pcs8g_digi_tx_byte_serializer' is set to an illegal value of 'en_bs_by_2'. This mode is not supported with device speed grade of '8_H6', PMA WIDTH of 'twenty_bit' on atom '<variation name>|av_hssi_8g_tx_pcs_rbc:inst_av_hssi_8g_tx_pcs|wys '. This combination of -6 transceiver and -8 device speed grades is unsupported when the “enable Byte Serializer/Deserializer with 16- and 20-Bit PMA-PCS Widths” option is selected. Resolution To work around this problem, you can reduce your transceiver PHY parallel width. Custom Fields values: ['novalue'] Troubleshooting 2205756300 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] No plan to fix No plan to fix ['Cyclone® V GX FPGA', 'Cyclone® V SX FPGA'] ['novalue'] ['novalue'] ['novalue']