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What is the difference between a .lib and a .db file used for Design Compiler?

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rayhuangno1

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Please kindly leave your comments.
Thanks a lot.
 

.db file is only the compiled of .lib (liberty) file. the compilation is made by lc_shell, library compiler, a tool from synopsys as well.
we could beleived, the .db is "more" rapidly ready by the synopsys tool, than the liberty file.

.db & .lib should contains the same timing/power/area../ informations, because the library compiler only read the liberty and write .db without other inputs.
 
Hi,

Both .lib and .db are synopsys logical library modeling formats.library compiler converts .lib to .db format.these .db files are in binary format whereas .lib in ASCII format. Before a library can be used, it must be compiled to .db.


Cheers
 
.lib is ASCII file while .db is binary file
 

.db is processed very fast as it is native format of synopsys
 

.lib and .db provides timingfunctionality,power information of standard cells and macro cells
Logical DRC's
Max Tran
Max Cap
Min/Max Fanout

The only difference is .db is encrypted(ASCII) format
 

most of them are replied. other way to see like this.

.db is generated from .lib. but, you cant generate .lib from .db
 

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