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NLPLabels vs ILLabels

theopaone

I am cleaning up a bunch of schematic libraries and get them ready for reuse. The symbol instance display text is a mixed bag of ILLabels and NLPLabels.

I want to standardize on a single way of displaying the value of the instance name (cdsName() or [@instanceName]), pin connections (cdsTerm("termName") or [@<pinName>] and parameter values (cdsParam(<index>) or [@<paramName>]. I am leaning towards the NLP labels but are there cases where they won't work or the the ILLabels are prefered?

Also, there are these textDisplay objects, can they be used instead?

Thanks

Ted

Parents

  • Thanks Andrew. I knew that there was the complicated cases requiring SKIL and ILLabels.. I was concerned about the way cdsParam specifies an index number rather than a parameter name, it is not intuitive.

    For their digital library which does not use CDFs, I will use NLPLabels, their analog devices with CDFs I will use the ILLabels.

    So here is a summation:

    ILLabels evaluate a SKILL function or expression in the instance. The results of the function or expression is displayed as a label. They are useful if the value is a calculation.

    cdsName, cdsParam and cdsTerm are functions that can be applied using ILLabels, they only seem to work in symbols, I've tried them in pcells and I'm sure that there are control properties missing. The advantage of using these functions is that the data they display is controllable in the schematic tool and can show more information than a static display such as using NLPLabels.

    NLPLabels express a value found using the NLP expression language. The labels are calculated once based on information found on the instance when it is placed. A label like [@instanceName] displays the instance name using the atPar hierarchy lookup, finding the first property of that name in the hierarchy (actually on the instance). Parameter (instance property) values can be displayed but only the value is displayed and cannot be represent a calculation. The value is not displayed if it is the default value of an instance (CDF) parameter. The pin NLPLabel displays the name of the net attached to the pin. I have only tried the [@instanceName] in a pcell and it worked.

    When I search the forum on NLPLabels again, after I have forgotten this, I will find it.


    Cheers


    Ted

Reply

  • Thanks Andrew. I knew that there was the complicated cases requiring SKIL and ILLabels.. I was concerned about the way cdsParam specifies an index number rather than a parameter name, it is not intuitive.

    For their digital library which does not use CDFs, I will use NLPLabels, their analog devices with CDFs I will use the ILLabels.

    So here is a summation:

    ILLabels evaluate a SKILL function or expression in the instance. The results of the function or expression is displayed as a label. They are useful if the value is a calculation.

    cdsName, cdsParam and cdsTerm are functions that can be applied using ILLabels, they only seem to work in symbols, I've tried them in pcells and I'm sure that there are control properties missing. The advantage of using these functions is that the data they display is controllable in the schematic tool and can show more information than a static display such as using NLPLabels.

    NLPLabels express a value found using the NLP expression language. The labels are calculated once based on information found on the instance when it is placed. A label like [@instanceName] displays the instance name using the atPar hierarchy lookup, finding the first property of that name in the hierarchy (actually on the instance). Parameter (instance property) values can be displayed but only the value is displayed and cannot be represent a calculation. The value is not displayed if it is the default value of an instance (CDF) parameter. The pin NLPLabel displays the name of the net attached to the pin. I have only tried the [@instanceName] in a pcell and it worked.

    When I search the forum on NLPLabels again, after I have forgotten this, I will find it.


    Cheers


    Ted

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