Writing out .lib & lef from virtuoso

LEF can be written with File->Export->LEF. .lib could be generated with the Liberate family of tools - there's not really a direct way of writing .LIB from Virtuoso because it generally needs characterization. There is the Tools->Characterization and Modelling->Black Box Liberty (MS) menu - not sureif that's really what you want either.

Regards,

Andrew.

Hello Andrew,

Thanks for the help..

The issue with lef is that  once I export  lef from virtuoso and read this to encounter,its not recognised by encounter as a macro.

Can we use the lef generated by  File->Export->LEF in virtuoso directly to encounter ? Or anything else need to be done for generating abstract  views so as to deal with the module as a macro in encounter?

Thanks

Shameel

Hi Shameel,

 If you have already generated your abstract then you could use (Shift+Q) Edit Master Properties and set the 'cellType' to 'block'.

Otherwise you can do the setting using abstract generator when creating teh abstract by moving the cell to the 'macro' 'bin'.

Another solution in case you have to do it for multiple cellviews is to use teh CIW -> Tools -> Set cellType.

 Thanks,

Alex

Hi Alex,

I have made the option " CIW -> Tools -> Set cellType>   *   " Still encounter does n't recognize it as MACRO

If I change CLASS to PAD instead of CORE or BLOCK ,encounter is recognizing it as IO pad with pins and exactly how I need it; except that it is IO .

But its not supporting CORE,BLOCK

Is there any attribute in lef that does n't support for CORE but IO ? 

Thanks

Shameel

Hi Shameel,

For CORE you need additional information like the sitePattern (which is the legal row site pattern in which you can place it) and SYMMETRY set to XY (allowed orientation)

For BLOCK I think the missing information is the SYMMETRY which is mots of the time ANY.

In order to set the information you need to open the cellview and do Shift+Q and then complete the Edit Cellview Properties form as mentioned above.

 Thanks,
Alex