The wholechip floorplan is very important before you start the layout.) y) Q2 u0 a8 H E
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth. " n- O! f0 e6 c( [2 aFinally,the drc & lvs could be so easy to do .; A7 S. R4 z u9 s7 I' Y
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.