The wholechip floorplan is very important before you start the layout.! X% ~& S) l2 e0 d( ^/ w
Then the position of output pin are fixed for each sub block,and the line drawing will be smooth. , X5 l. h) Q% p& c; a1 xFinally,the drc & lvs could be so easy to do . z; y. f* l8 h1 nBut the floorplan must be verified by designer.The thing of re-layout almost have not be happened.