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Referencing a model, not a model instance

itos

Hello,

I found the post about disabling flicker noise with alter in this forum and I got it working:

turnOffFlicker1 alter mod=N15.xmmaster.lvtnfetacc param=nfalw value=0
turnOffFlicker2 alter mod=N15.xmmaster.lvtnfetacc param=nfblw value=0
turnOffFlicker3 alter mod=N15.xmmaster.lvtnfetacc param=nfclw value=0

If I reference the model (i.e. lvtnfetacc and masterlvtnfet from the model files) I get:

ERROR (SFE-1997): "disable_flicker.scs" 6: turnOffFlicker4: parameter `mod': Invalid model name `lvtnfetacc' was given as value of parameter `mod'.

I tried all possible variations. Unfortunately the model files are so nested that I don't know what's going on. Generally there is a subckt for "lvtnfet" which instantiates instance xmmaster of lvtnfetacc. lvtnfetacc itself is a subckt which instantiates m1. m1 is a reference to the model lvtnfetacc of type utsoi which has the parameter nfalw etc:

sub

Please help me to set nfalw to zero globally without listing all instances.

Also, is it possible to list multiple mod/param/value pairs at once so that I do not need to create thousands of turnOffFlickerXX lines that go up to 1000?

Thank you!

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  • Andrew Beckett

    The versions are fine. If you use spectre -W it shows the subversion number, whereas spectre -V it shows the major version umber and build date. This is a hotfix of MMSIM15.1 which is why it came out during 2016. It wouldn't be 16.1 - not sure why you think that.

    If you get a warning, then I think it could be that you aren't really running that version, or you've misentered the setting. Note I think you also have to use noiseoff_inst at the same time for this to have an effect. 

    What version does it show at the top of the spectre log file? What do you have in the options/analysis statements in the input.scs? What exactly does the warning show?

    You might also want to take a look at these two solutions:

    Regards,

    Andrew

Reply
  • Andrew Beckett

    The versions are fine. If you use spectre -W it shows the subversion number, whereas spectre -V it shows the major version umber and build date. This is a hotfix of MMSIM15.1 which is why it came out during 2016. It wouldn't be 16.1 - not sure why you think that.

    If you get a warning, then I think it could be that you aren't really running that version, or you've misentered the setting. Note I think you also have to use noiseoff_inst at the same time for this to have an effect. 

    What version does it show at the top of the spectre log file? What do you have in the options/analysis statements in the input.scs? What exactly does the warning show?

    You might also want to take a look at these two solutions:

    Regards,

    Andrew

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