ICC中电源PAD连接不上core power ring，Warning: wire dropped because obstruction

dy19870425 · 发表于 2019-12-20 10:37:10

在icc中，通过preroute_instances -primary_routing_layer preferred -preferred_routing_layer high命令，将电源PAD的引脚同core power ring相连接的时候, 遇到一堆的 warning如下：

WARNING: Failed to make a connection for the following pin:

((1728.520, 1007.905) (2035.995, 1010.105))(Net: VDD)(wire on layer: M4 [64])

Warning: wire dropped because obstruction,((2036.070 1007.905) (2036.220 1010.105)) (Net: VDD) (Layer: M3 [63]) isblocked by ((1729.930 930.200) (2035.995 2037.060)) (Net: null) (Layer: M3[63]). (PGRT-030)

WARNING: Failed to make a connection for the following pin:

((1728.520, 1553.955) (2035.995, 1556.155))(Net: VDD)(wire on layer: M4 [64])

Warning: wire dropped because obstruction,((2036.070 1553.955) (2036.220 1556.155)) (Net: VDD) (Layer: M3 [63]) isblocked by ((1729.930 930.200) (2035.995 2037.060)) (Net: null) (Layer: M3[63]). (PGRT-030)

导致电源PAD的引脚同core power ring连接不上，请问这个问题怎么解决啊？？？？？？

求高手指点啊！！！！！

oucliyang · 发表于 2019-12-23 13:38:27

是不是有route guide啊

dy19870425 · 发表于 2019-12-23 14:32:00

oucliyang 发表于 2019-12-23 13:38
是不是有route guide啊

什么是route guide??? 是一条命令吗？

oucliyang · 发表于 2019-12-23 17:02:56

我只是猜测有route guide，因为你的Warning: wire dropped because obstruction,((2036.070 1007.905) (2036.220 1010.105)) (Net: VDD) (Layer: M3 [63]) isblocked by ((1729.930 930.200) (2035.995 2037.060)) (Net: null) (Layer: M3[63]). (PGRT-030)，是说M3的这条VDD被一个null net挡住了，所以你看看你这个区域内是不是有其他走线，或者route guide，所以工具不让VDD再在这个区域走线了，检查一下坐标