The wholechip floorplan is very important before you start the layout.- ^" g3 Q5 M( c$ t" B$ W3 U
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth. 8 P, f/ h' u7 I% n0 j/ x" l! \Finally,the drc & lvs could be so easy to do .. P! D6 L ]+ }- P
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.