Insertion of Tie cell into the design

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jitendravlsi

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Can anybody suggest me the advantages of inserting the tie cells into the design after placing the instances, rather than inserting them into the design during logic synthesis?

from where we get these tie cells?



thanx in advance
 

Hi,

It's the right way to insert after the placement optimization is finished during PNR.

The reason is because PNR tools isn't able to place the tie cells at the right location close to relative logics and optimize the tie cells.

If pre-layout netlist (logic synthesis) has the tie cells, that must be cause a serious routing congestion.

Thanks.
 

    jitendravlsi

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