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how to pass parameters and do some calculations

Danilo P

Hi,

In cell cap the cdf parameter "c" is defined and set as c = [@test:%:12.0].

Cell cap is instantiated in the schemati cell "myTest". In the cell myTest the user property "test" is declared as string ans set to 15.

Everything is fine till now, netlist is generated correctly  and parameter value is passed properly through the hierarchy. Now I need that parameter c in the cell "cap" doesn't inherit exactly the value from property "test" defined on the parent cell, but it should be generated with a calculation: for instance 2*test+15. How to do that?

 Thank you, Danilo

 

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  • Andrew Beckett

    Hi Danilo,

    Apologies - I posted the reply to the wrong post (I don't think I can fix that without messing up the others - I'll see).

    Anyway, if using the UltraSim or hspiceD netlister, you should not really be using NLP expressions to pass parameters. Better would be to use the AEL pPar() expression, and then you can have expressions as the Analog Expression Language handling will come into play.

    That's really the way that AEL/CDF-based netlisters are intended to work. NLP is more for older "digital" flows which are separate from ADE.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hi Danilo,

    Apologies - I posted the reply to the wrong post (I don't think I can fix that without messing up the others - I'll see).

    Anyway, if using the UltraSim or hspiceD netlister, you should not really be using NLP expressions to pass parameters. Better would be to use the AEL pPar() expression, and then you can have expressions as the Analog Expression Language handling will come into play.

    That's really the way that AEL/CDF-based netlisters are intended to work. NLP is more for older "digital" flows which are separate from ADE.

    Regards,

    Andrew.

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