The wholechip floorplan is very important before you start the layout.6 h& M1 o2 M0 X5 ?. n
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth. 8 B8 G' X: a$ c( k% bFinally,the drc & lvs could be so easy to do .% |0 l9 W1 c% M {
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.