The wholechip floorplan is very important before you start the layout. 8 p8 r/ b H, v" \5 R# d% gThen the position of output pin are fixed for each sub block,and the line drawing will be smooth., Y- U) ] F [. R6 a. T$ H
Finally,the drc & lvs could be so easy to do .* g8 O0 U" C, V- z4 Q2 \ O) h/ z: X
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.