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在做ICC布局优化时遇到了这样一个问题,谢谢大家帮忙解决一下:
1.drive_pg_connection
2.create_rectangular_rings
3.create_power_straps
4.preroute_instance
5.preroute_standard_cells
6.create_fp_placement
当我执行上述命令将电源线和地线不好后,导入std cell执行 place_opt 命令将其优化,但是出现了如下错误:
ERROR:layer 'metal1' is missing the capacitance attribute [PSYN_100]
DISCRIPTION:
You receive this message because some of the required information described below is missing.
Every metal layer in the physical library must specify informatin about pitch,default width,preferred routing
direction,and resistance and capcitance per square. |
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