Stats

  • Locked Locked
  • Replies 2
  • Subscribers 143
  • Views 13273
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

techGetLxExtractLayers does not work as intended

loboveena

 Hi,

 I need to extract the layer names defined in the validLayers section of virtuosoDefaultExtractorSetup constraint group in the techfile. I was using techGetLxExtractLayers function for this purpose and it was working fine when the  format of the virtuosoDefaultExtractorSetup constraint group for validLayers did not include layer purposes. 

Now that layer purposes are also included as shown below, the function returns only ("CONT" "VIAS1"). My intention is to get the routing layer names or all the layer names defined in the validLayers section. Is techGetLxExtractLayers function not intended for this purpose ? Is there any new function available to do this task ? Could you hlp me out?

virtuosoDefaultExtractorSetup(

( interconnect ( (vaildLayers ( (METAL1 drawing)

                                            (METAL1 pin)

                                            (CONT drawing)

                                            (VIAS1 drawing)

                                            (METAL2 drawing)

                                            (METAL2 pin)

                                              so on ))

)))

 

Thanks,

Veena

Parents
  • Andrew Beckett

    Not sure if your validVias are causuing a problem, but this function doesn't support LPPs anyway.

    Two ways I think you can get the data:

    lceGetExtractLayers(cvId) ; note it starts from a cellView, rather than the tech file.  And needs XL to be running.

    Or using the cst functions:

    tf=techGetTechFile(ddGetObj("myTechLib"))
    cg=cstFindConstraintGroupIn(tf "virtuosoDefaultExtractorSetup")  ; or whatever constraint group you want
    cstFindFirstConstraint(cg "validLayers")~>value

    Regards,

    Andrew.

     

Reply
  • Andrew Beckett

    Not sure if your validVias are causuing a problem, but this function doesn't support LPPs anyway.

    Two ways I think you can get the data:

    lceGetExtractLayers(cvId) ; note it starts from a cellView, rather than the tech file.  And needs XL to be running.

    Or using the cst functions:

    tf=techGetTechFile(ddGetObj("myTechLib"))
    cg=cstFindConstraintGroupIn(tf "virtuosoDefaultExtractorSetup")  ; or whatever constraint group you want
    cstFindFirstConstraint(cg "validLayers")~>value

    Regards,

    Andrew.

     

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.