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Automatic via placement for power grid

Wonyoung

Hello, 

In Cadence Virtuoso, is there a way to draw a metal for power/gnd and have vias automatically placed to connect the metal to the power grids of sub-blocks? For example, I have multiple sub-blocks that uses up to M4, and have M5 power grids passing above the sub-blocks. I was wondering if I can just label the power/gnd nodes in the sub-blocks and somehow automatically generate vias between M4-M5 to connect the sub-block power/gnd to M5 power grids. I am currently using Cadence 6.1.5. 

 Thank you very much.

 Wonyoung 

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