排列 Placement5 R% C( {6 G! c6 |1 Y" v8 k, w
溝通 communication / v2 W h, N$ ?/ y* S( ?% U. R/ A4 c% S$ b/ f1 U
這二點很重要2 u5 L- y* S. E7 `. n6 o7 i v
其他的還好啦 都是花時間
The wholechip floorplan is very important before you start the layout. ' c' ^1 Q, R$ s# n9 b) f. bThen the position of output pin are fixed for each sub block,and the line drawing will be smooth. & _' q- S& _1 H5 n7 YFinally,the drc & lvs could be so easy to do .- [8 v( U" B! _5 r. _ n
But the floorplan must be verified by designer.The thing of re-layout almost have not be happened.