1.设计数据导入（见01）

2.初始化 top floorplan with def

3.创建 block partition

4.调整 block floorplan (size/location/area/connection, manul work)

5.format floorplan size and location

6.create tracks

7.pin assignment 

8.power routing and pushdown

9.commit partition

10.write data

7.pin assignment 

1.pin分类：

block -- block fanout = 1net

block -- top fanout = 1net

block -- block multi fanout nets

block -- top multi fanout nets

floating/tie pins

2.block -- block fanout = 1net

首先摆ca53_cpu这边的pin

结果如下

然后摆ca53_l2这边的pin

结果如下

3.block -- top nets fanout = 1net

4.floating/tie pins-ca53_l2

5.floating/tie pins-ca53_cpu

6.rest of pins of ca53_cpu \ ca53_l2

检查pin摆放

./        

保存写出db