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How to use specified cells for hold violation fix in Encounter?

Hi everyone,

I am wondering how to use some specified buf/inv cells for hold time fix in Encounter? For example, some delay cells may be preferred. Can anyone tell me the related command?

Another question is how to specify buf/inv cells for CTS? I can choose some buf/inv cells in the CTS step. However, would Encounter use some other cells in the clock tree in the following steps?

Thanks a lot,

Tom

fitz over 10 years ago

Tom ...

setOptMode -holdFixingCells {DLYX4 DLYX2}

set_ccopt_property buffer_cells { BUFX12 BUFX8 BUFX6 BUFX4 BUFX2 }
set_ccopt_property inverter_cells { INVX12 INVX8 INVX6 INVX4 INVX2 }
set_ccopt_property clock_gating_cells { PREICGX12 PREICG8 PREICGX6 PREICGX4 }

... Shawn
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TOMRHBD over 10 years ago

Hi Shawn, thanks a lot!
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