Magic Blue Smoke

 

Multi-Voltage/Power Gated design and LVS

 

Some interesting observation while running LVS on a power gated or a MV design. Here is quick preview on the problem description

 

image

As shown in the picture above if LVS is run on a Verilog netlist generated without bulk pin connections, bulk connections may not be correct from electrical perspective.

More on how typically designers handle this in my next post.