Why does the Intel® Quartus® Prime Pro Edition Software v21.3 fail to compile in the Support-Logic Generation stages when the design has more than one FGT PMA channel clocked with PMA clocking mode?

Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.3, if you configure more than one FGT PMA channel with physical medium attachment (PMA) clocking mode in your design, you will run into a known compilation error. This problem happens at the Support-Logic Generation stages during the compilation process. This problem affects the FGT PMA type for both non-return-to-zero (NRZ) and PAM4 mode.

FHT PMA type and System PLL clocking mode for FGT PMA are not affected by this problem.

This problem is scheduled to be fixed in a future release of the Intel® Quartus® Prime Pro Edition Software.