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fsdb to pwl

KOTB

Hello,

If Ihave 'fsdb' file which represents the simulations results of a simulation (waveforms), is there a way to transform it into pwl (piece wise linear) signals that I can use as stimulis ?

Thanks,

Kotb

  • Andrew Beckett

    Hi Kotb,

    You can open the FSDB file in ViVA and then in the results browser do right-mouse->Export over the signal you wish to convert to PWL and export it in "SPECTRE" format. This will create a PWL file that can be read with vpwlf from analogLib or vsource specifying that the PWL data is coming from a file.

    Andrew.

  • KOTB
    in reply to Andrew Beckett

    Thank you Andrew, it works perfectly

    kotb

  • SatendraMaurya
    in reply to Andrew Beckett

    Hi Andrew,

    Is there a automated way to do this? I have bunch of signal to convert to PWL and also across lots of corners?

    Satendra

  • Andrew Beckett
    in reply to SatendraMaurya

    I didn't try doing this across corners, but you're going to have to create individual files for each corner anyway. So you'd do:

    pathToResults="/export/home/username/tools/spectre/adc.raw"
    listOfSignals=list("o1" "o2" "o3" "o4" "o5" "o6")
    database="tran-tran"
    outputDir="./adc.pwl"
    rdbLoadResults("unbound" pathToResults)
    rdbWriteToFormat("unbound" outputDir "SPECTRE" list(list(pathToResults list(list(database listOfSignals)))))

    Unfortunately there's a limitation now that the results browser has to be opened and displayed for the export to happen (otherwise it just returns t but doesn't actually write the data). There's a CCR for this, CCR 1054798.

    Regards,

    Andrew

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