一个block level 的design在innovus下设计,在跑place的时候几个port和四条net报了undriven net with fanout的warning
到了route和postroute阶段只报了四条net的warning ,如下:
place 阶段:
**WARN:(IMPOPT-7098):WARNING:clk_lsw_cg is an undriven net with 31 fanouts.
route&postRoute阶段:
#WARNING(NREXX-80) Net clk_lsw_cg does not have a driver pin . it may have incomplete route.