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

[rayhuangno1]

Please kindly leave your comments.
Thanks a lot.

 

[rca]

.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.

 

[upendra.b]

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

 

[chris_li]

.lib is ASCII file while .db is binary file

 

[dftrtl]

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

 

[ravipandu46338@gmail.com]

.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

 

[sam536]

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

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