The wholechip floorplan is very important before you start the layout. ; c( x6 @: i+ E# p/ O' R RThen the position of output pin are fixed for each sub block,and the line drawing will be smooth.+ ^4 [9 O1 ]. _; H6 G& r
Finally,the drc & lvs could be so easy to do . , P" o# y9 M9 v: yBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.