librarys used in the EDA tools

[owen_li]

Hi, could you describe these librarys and where to use them（in which tool）
1. tlf
2. lef
3. def
4. lib
5. db
6. cdb

thanks in advance！

 

[srpatel9]

Hi, could you describe these librarys and where to use them（in which tool）
1. tlf
2. lef
3. def
4. lib
5. db
6. cdb

LEF- Has info abt metals via contacts. Used in Place and Route, Synthezier. Also needed in parasitic extraction if you are using Star-RCXT tool.

LIB- Has all cell timing info. Used in PLACE and ROUTE and Synthesizer.

DEF- Used in Star-RCXT for parasitic extraction. Could have more uses, I am not aware of it.

DB- synopsis data base file. Used in Star-RCXT, Tetramax and many more.

I am not aware of the remianing.

Hope this helps.

 

[kadhan]

Hi,

tif is same as .lib ( It contains timing information)
cdb is noise library. (cdb is input for Cadence CeltIC)

 

[kumar_eee]

.tlf is Tech LEF file..
This file contains all your technology related info like metal width & spacing , Via rules & Antenna details. PD tools will read this file before doing routing & it take care of these rules while doing routing to avoid the violations.

.cdb is Layout databse of std cells.
You can use this file to view the std cell layout.

I think u have got the answers for the rest..

 

[vlsiwiz]

Some more details about the files

LEF- Library exchange format- Contains information about the physical view of standard cells - ports, power rails, obstructions etc. Typically this file is used by Cadence routing tools.

DEF- Design exchange format- Just another format for exchanging routed designs.
lib- timing library for synthesis and sta
db- compiled lib file- generated using library compiler

 

[eld03]

cdb : cadence database
db database /synopysys