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 MDL postprocessing of FSDB wave 

Last post Wed, Nov 28 2012 6:42 AM by dansIn. 2 replies.
Started by dansIn 28 Nov 2012 06:04 AM. Topic has 2 replies and 746 views
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  • Wed, Nov 28 2012 6:04 AM

    • dansIn
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    • Joined on Thu, Aug 2 2012
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    • Points 25
    MDL postprocessing of FSDB wave Reply

    Hello,

    Im thinking of using  MDL for comparing waves coming from Verilog to waves coming from spectre.

    Let's say I have a fsdb wave from verilog AMS simulation and I'd like to apply to it a set of measurements such as max, cross etc...

    and compare results to measurements I obtained from spectremdl run. So my question is:

    Is it possible to use mdl config file for postprocessing FSDB wave without netlist? Smth like:

    mdl -b cfg.mdl -r my_design.fsdb -out my_meas_dir

    All examples in MDL_workshop are about specte/ultrasim  postprocessing when netlist is available.  In my case, I just have a file with wave that should be self-sufficient.

    Tnx,

    Dan 

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    • Post Points: 20
  • Wed, Nov 28 2012 6:31 AM

    Re: MDL postprocessing of FSDB wave Reply

    You won't be able to process an FSDB database regardless, because it's not a Cadence format. So the tools can write it, but cannot read it.

    If the output was psf/psfxl (say) then it's possible. I don't believe the netlist is required - it's only needed if your MDL references netlist parameters in the MDL code (as far as I know from a quick experiment)

    Andrew.

    • Post Points: 20
  • Wed, Nov 28 2012 6:42 AM

    • dansIn
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    • Joined on Thu, Aug 2 2012
    • Posts 2
    • Points 25
    Re: MDL postprocessing of FSDB wave Reply

    Tnx Andrew,

    so as far Im aware, cadence provides a way to convert vcd to psf and Springsoft has a utility that converts (digital only) fsdb to vcd.

    Seems like a deadend for analog  fsdb waves. I'll try to find a way to generate VCD waves though. If what you say is correct i.e. no netlist is needed and I can get all this rich MDL API to measure converted from VCD waves, it could be a workaround.

    tnx again,

    dan 

    • Post Points: 5
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Started by dansIn at 28 Nov 2012 06:04 AM. Topic has 2 replies.