The wholechip floorplan is very important before you start the layout. + T& W) f: q1 S: U1 r" wThen the position of output pin are fixed for each sub block,and the line drawing will be smooth. 2 }, N, E) M4 X0 v( L2 |Finally,the drc & lvs could be so easy to do . 0 M. K/ H1 m7 {. N- FBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.