ID:170123 Cannot use DDIO_LOW setting on atom "<name>" because <name>

CAUSE: The specified atom is marked as a DDIO low register. However, the atom's configuration does not match that expected by the Fitter. The DDIO low register setting will not be obeyed, and the Fitter might create glitches on the corresponding DDIO output pin. This may reduce your timing margin and increase power consumption.

ACTION: Check if this atom was intended to be a DDIO low register. If it was, make sure that it has a corresponding DDIO high register, and that connections from these two registers go to a DDIO output mux. Intel suggests using the ALTDDIO_OUTPUT or ALTDDIO_BIDIR megafunctions, or the ALTDQS and ALTDQ megafunctions when designing a memory interface, for the DDIO components in the design.