Internal Error: Sub-system: LVDS, File: /quartus/periph/lvds/lvds_gen6.cpp, Line: 787

Description

Due to a problem in the Intel® Quartus® Prime Pro Edition software version 20.3 and earlier, you may see the internal error above at Fitter stage when there is a PLL connected to multiple LVDS IPs with outclk channel in the same IO bank. This problem only affects Intel® Arria® 10 devices.

Resolution

This problem is fixed beginning with the Intel® Quartus® Prime Pro Edition software version 21.1.