Why does the maximum observed channel-to-channel skew exceed 2 UI + 125 ps in an E-Tile transceiver under NRZ mode, even when TX PMA bonding is enabled?

Description

Due to a problem in the Quartus® Prime Pro Edition software version 25.3.1 and earlier, you may observe channel-to-channel skew exceeds 2 UI + 125 ps in E-Tile transceivers under NRZ mode even when TX PMA bonding is enabled.

Resolution

There is no workaround currently, and there is no plan to fix this problem.