Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.4 and earlier, there is no valid assignment value for the F-Tile of the Intel Agilex® 7 FPGA DC coupling connection.
This problem has been resolved in the Intel® Quartus® Prime Pro Edition Software version 23.1.
Assignment example as below:
set_instance_assignment -name HSSI_PARAMETER "flux_mode = FLUX_MODE_BYPASS" -to <ip_instance_hpath> <tileid>
set_instance_assignment -name HSSI_PARAMETER "rx_ac_couple_enable = DISABLE" -to <ip_instance_hpath> <tileid>