ID:20297 Cascading IOPLL "<Illegally placed IOPLL name>" was placed between IOPLLs of a different cascade pair ("<Upstream cascaded IOPLL>","<Downstream cascaded IOPLL>"). It is not possible for cascading IOPLL pairs to be interleaved. Constrain IOPLL locations so that there are no IOPLLs between other cascading IOPLL pairs.

CAUSE: Cascading IOPLL \"%1!s!\" was placed between IOPLLs of a different cascade pair (\"%2!s!\",\"%3!s!\").

ACTION: Constrain IOPLL locations so that there are no IOPLLs between other cascading IOPLL pairs.