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 matlab interface and PSF data format 

Last post Wed, Feb 11 2009 3:08 PM by jons. 3 replies.
Started by vlau2 19 Aug 2008 03:06 PM. Topic has 3 replies and 7657 views
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  • Tue, Aug 19 2008 3:06 PM

    • vlau2
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    • Joined on Thu, Jul 17 2008
    • Newport Beach, CA
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    matlab interface and PSF data format Reply

    I am developing a custom function in Cadence's calculator to do some advance analysis from simulation data.  I know how to read cadence's simulation data from matlab (using measure functions), after performing matlab transformation of simulation data, I want to write it back to cadence (possibly in PSF data format) so that cadence can read the data and plot it.  Can someone tells me whether this approach make sense?  And is there any functions available to write the matlab data back in PSF format?

     

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  • Wed, Aug 20 2008 5:08 AM

    • Bernd
    • Top 500 Contributor
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    • Unterhaching, Bavaria
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    Re: matlab interface and PSF data format Reply

     IMHO makes no sense.

     1. PSF is a proprietary waveform format of Cadence, you will  not 
         find any specification or documentation about.
     2. The Analog Waveform Display (AWD) which evaluated the PSF will be replaced
         finally in DFII 6.1. by WaveScan which has the wave form format SST2.
         So you would develop something for a dead end.

    The best would be if Cadence would support an open waveform standard.
    There are change requests for this, but as far as I know there has not much
    happened in this direction.

     Bernd

    Just another lonesome cad guy
    • Post Points: 20
  • Wed, Aug 20 2008 10:54 AM

    • vlau2
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    Re: matlab interface and PSF data format Reply

    Is SST2 a cadence proprietary waveform format also?

    How about the calculator function flow? Has anyone try to use it to interface with matlab?

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  • Wed, Feb 11 2009 3:08 PM

    • jons
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    Re: matlab interface and PSF data format Reply

     A couple of comments here.  

     1) PSF supports an ASCII mode which is pretty easy for creative coders to write to and the "psf" executable can converts ascii to binary and back if the ascii performance is not acceptable.   Just take any psf file and run the "psf" executable on it and you will see the ascii output (% psf tran.tran)

    2) PSF and SST2 are both proprietary formats also Cadence does as part of its OASIS simualtion integration to ADE provide access to writing PSF but you must purchase this integration kit to gain access.   For newer formats like SST2, access is not provided.

    3) I've shared in my feedback to the subject "How to plot a graph" (Feb09) the process of using "csv" files to import external data into WaveScan & ViVA XL as this is pretty simple as well as the option to use the calculator function "getAsciiWave".

    4) If you have VCD data then you can easily convert to SST2 using the simvisdbutil exectuable that comes in the IUS (AMS) hierarchy.

     Hope these options help,

     jons

      

     

    • Post Points: 5
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Started by vlau2 at 19 Aug 2008 03:06 PM. Topic has 3 replies.