The wholechip floorplan is very important before you start the layout. ' I1 z4 h- ?3 @6 r. X, B1 `+ |! TThen the position of output pin are fixed for each sub block,and the line drawing will be smooth.# h ?) m4 z4 G8 m# s
Finally,the drc & lvs could be so easy to do .( c D" ^9 X" q" t3 h
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.