Stats

  • Locked Locked
  • Replies 2
  • Subscribers 125
  • Views 14433
  • 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

How to access captab results in calculator?

dontpanic

Hi! I am trying to figure out how to access captab results from the calculator. For instance, I am running a captab at the final transient operating point, and in the results browser I can see all the reported capacitances (under "finalTimeCap-info.captab"), like for instance:

/PHI1En : PHI1En:Fixed    23.49E-15
/PHI1En : PHI1En:Total    38.73E-15
/PHI1En : PHI1En:Variable    15.24E-15

I would like to use these values in calculator expressions. If I right-click on a captab entry in the results browser and choose "(send to) Calculator", expressions like the following are transferred to the calculator buffer:

pv("/PHI1En : PHI1En" "Total" ?result "captab")

However, if I try to evaluate these expressions, I get the following error message in the CIW:

expression evaluation failed: Expression evaluates to nil
expression evaluation failed: pv("/PHI1En : PHI1En" "Total" ?result "captab")
WARNING (OCN-6043): Either you did not do openResults() and selectResults() before using this command,
        or the requested data is not in the file. Make sure your openResults() and selectResults()
        commands worked and type report() to see what is in the file. For more information, type
        ocnHelp() in the Command Interface Window (CIW).

The same happens if I use expressions like: pv("/PHI1En : PHI1En" "Total" ?result "finalTimeCap-info.captab"), although in this case I don't get the warning, just the error messages:

expression evaluation failed: Expression evaluates to nil
expression evaluation failed: pv("/PHI1En : PHI1En" "Total" ?result "finalTimeCap-info.captab")

...Any ideas on how to achieve this appropriately? Thanks in advance for any help!

Cheers,

Jorge.


Parents

  • Hi Jorge,

    Try taking out the leading "/" in the first argument to pv(). The "/" means that it is a "schematic name" which needs mapping to the netlist name. In this case, I think something has got confused - because that name could never be a schematic name. You can check the names using:

    outputs(?map nil ?result "captab")

    Regards,

    Andrew.

Reply

  • Hi Jorge,

    Try taking out the leading "/" in the first argument to pv(). The "/" means that it is a "schematic name" which needs mapping to the netlist name. In this case, I think something has got confused - because that name could never be a schematic name. You can check the names using:

    outputs(?map nil ?result "captab")

    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.