The wholechip floorplan is very important before you start the layout." H0 @, A+ y4 t7 d
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth.1 Y% z" o4 V, B* y+ u% u0 \, F9 `
Finally,the drc & lvs could be so easy to do . % \! V9 `, K' B5 Y& bBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.