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Changing CDF property display value via SKILL

rajivsub

I have a schematic with many instances of some primitive devices. One of the devices - a transistor, has a particular CDF parameter (say Drain resistance) whose Display field is set to "off" (in the Edit Object Properties Form, when I do a 'q' on the instance).

I want to be able to change the value to 'both'. (out of the options of 'off', 'value', 'name' and 'both').

I tried something like

foreach( inst cv~>instances

  required_prop = car(setof(prop_element inst~>prop equal(prop_element~>name "drain_resistance")))

  ; but then I am not able to see any field for the display of the required_prop

)

Any ideas on how this can be done? Since I need to do it on many instances and on many cells in a library, do not want to end up doing it manually via the GUI.

Thanks much 

 

Parents

  • Normally the parameters displayed next to a transistor are actually displayed by the CDF interpreted labels. These are the labels on the symbol which are of type "ILLabel" and have values such as cdsParam(1), cdsParam(2) etc. The contents are controlled by the "Interpreted Labels" section of the CDF (Tools->CDF->Edit CDF in the CIW), and can be changed on the fly by using Edit->Component Display in the schematic editor (this just updates the Effective CDF). In the Interpreted labels you can choose which parameters are displayed in the cdsParam(N) label slots.

    When you turn labels on/off via the edit properties form, it actually creates a "textDisplay" object in the schematic next to the instance, which references the property itself and displays the name/value of that property. This is done using dbCreateTextDisplay() - see the documentation. There's no "simple" interface to do this - it's buried within the schematic property editor code. Better to use the interpreted labels if you can...

    Regards,

    Andrew.

Reply

  • Normally the parameters displayed next to a transistor are actually displayed by the CDF interpreted labels. These are the labels on the symbol which are of type "ILLabel" and have values such as cdsParam(1), cdsParam(2) etc. The contents are controlled by the "Interpreted Labels" section of the CDF (Tools->CDF->Edit CDF in the CIW), and can be changed on the fly by using Edit->Component Display in the schematic editor (this just updates the Effective CDF). In the Interpreted labels you can choose which parameters are displayed in the cdsParam(N) label slots.

    When you turn labels on/off via the edit properties form, it actually creates a "textDisplay" object in the schematic next to the instance, which references the property itself and displays the name/value of that property. This is done using dbCreateTextDisplay() - see the documentation. There's no "simple" interface to do this - it's buried within the schematic property editor code. Better to use the interpreted labels if you can...

    Regards,

    Andrew.

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