The wholechip floorplan is very important before you start the layout. 8 J& l8 d* D% \ rThen the position of output pin are fixed for each sub block,and the line drawing will be smooth. - N0 j7 f6 u; k; `0 A( W0 mFinally,the drc & lvs could be so easy to do . 9 n5 f& F, X4 ^3 q5 ?! y1 W: lBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.