ID:178018 Channels in the bonded channel groups containing the following must be placed in contiguous locations. If CMU PLLs are used, gaps must be left for the transmit PLL channel.

CAUSE: Bonded channels are not placed in contiguous locations.

ACTION: When using phase-locked loops PLL feedback compensation bonding, use Quartus Prime Settings File (QSF) settings to place bonded channels at contiguous locations. If the clock multiplier unit (CMU) PLLs are used as transmit PLLs, a channel must be available for placing a CMU PLL in every I/O occupied by the bonded channels. The 'unused' channels are part of the contiguous bonded channels.