Internal Error: Sub-system: CONSTRA, File: /quartus/db/constra/constra_runtime_rbc_checker.cpp, Line: 185 - Internal Error: Sub-system: CONSTRA, File: /quartus/db/constra/constra_runtime_rbc_checker.cpp, Line: 185 Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software, you will get the above error message when setting a negative phase shift on the output clock in the PHY Lite for Parallel Interfaces Intel® Stratix® 10 FPGA IP. Resolution To work around the problem, set only positive phase shift for any output clocks inside the PHY Lite for Parallel Interfaces Intel® Stratix® 10 FPGA IP. This problem is scheduled to be fixed in a future release of the Intel® Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 1408469747 False ['PHY Lite for Parallel Interfaces Stratix® 10 FPGA IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 19.1 18.1 ['Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue'] - 2023-01-23