The wholechip floorplan is very important before you start the layout. + Z4 C2 f& \: x0 o" `; U! V. h2 RThen the position of output pin are fixed for each sub block,and the line drawing will be smooth. / T. y T4 Q2 ~* o8 v% ^& g) UFinally,the drc & lvs could be so easy to do . - w& p8 } B- nBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.