Description
Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 22.2 or earlier, you might see this internal error when compiling a design targeting the Intel® Stratix® 10 device family.
The error occurs in designs containing an IOPLL Intel® FPGA IP where the refclk is assigned the LVDS I/O standard and the extclk_out port(s) are assigned the Differential 1.2-V SSTL I/O standard.
Resolution
To avoid this error, change the I/O standard of the extclk_out port(s) to LVDS as Differential 1.2-V SSTL is an unsupported I/O standard for the extclk_out port(s).
This internal error will be converted into a meaningful error message in a future release of the Intel® Quartus® Prime Pro Edition Software.
