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How to skip/exclude a subckt's definition during netlisting for specific subckt(s)

MFahmy

Hello, 

I am using the createNetlist command to generate spectre netlists from a skill code, some of the subckt definitions will come from external files which will be included, and hence the netlisting should stop at the top level of those instances and the subckt definition of those instance should be excluded from the netlist 

something like black boxing but with the subckt definition completely ommited from the netlist 

this is currently how I am netlisting

simulator('spectre)
design("my_lib" "my_cell" "schematic")
createNetlist(?display nil)

virtuoso : ICADVM20.1-64b.500.28

Spectre: sub-version  21.1.0.546.isr13 

Thanks, 

Fahmy 

Parents

  • Hi Fahmy,

    You would need (at the very least) to edit the Base CDF for those cells and ensure that the terminal order in the spectre simulation information section matches the order of the terminals in the external definitions; otherwise the instances netlisted won't align with the external subckt definitions.

    Then you would need to either:

    1. Create a stopping view (e.g. called "spectre") by copying the symbol view to that name. If you don't call it spectre (maybe you don't always want it to stop at spectre views in normal usage), then you'd need to use envOption('switchViewList ...) and envOption('stopViewList ...) to set the switch and stop view list (similar to doing it on the Setup->Environment form in ADE)
    2. Create a config with the hierarchy editor and use that as the design() - then using the right mouse button menu over the cells in question you can mark the cells you want as stop points.

    Regards,

    Andrew

Reply

  • Hi Fahmy,

    You would need (at the very least) to edit the Base CDF for those cells and ensure that the terminal order in the spectre simulation information section matches the order of the terminals in the external definitions; otherwise the instances netlisted won't align with the external subckt definitions.

    Then you would need to either:

    1. Create a stopping view (e.g. called "spectre") by copying the symbol view to that name. If you don't call it spectre (maybe you don't always want it to stop at spectre views in normal usage), then you'd need to use envOption('switchViewList ...) and envOption('stopViewList ...) to set the switch and stop view list (similar to doing it on the Setup->Environment form in ADE)
    2. Create a config with the hierarchy editor and use that as the design() - then using the right mouse button menu over the cells in question you can mark the cells you want as stop points.

    Regards,

    Andrew

Children

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