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Suggestions for practical ADE Assembler test setup for corner-specific cellviews?

hchan

Hi,

Our design teams use corner-based extraction cell libraries. These extractions are saved as various views in each cell. We are interested in convenient ways to specify distinct views per corner within an ADE Assembler test.We are not interested in breaking up to multiple tests as updates need to be synced across them.

We are aware that via config views, the CONFIG/<lib>/<cell> parameters can be set on a per-corner basis. This implies one parameter per master lib-cell, which means 10's-100's parameters. This could become untenable to keep them in sync throughout design updates.

Are there ways to simplify the Config view approach?  For example, accepting wildcard in the CONFIG parameter names, CONFIG/mylib/abc_*

We've considered using include <file> to include netlists, and change <file> per corner, but we found that include does not accept a variable filename.

Other approaches?

Our Virtuoso version is ICADV12.3-64b.500.9.

Thanks,

Henry

  • Andrew Beckett

    Hi Henry,

    One idea I had was to not use a config but instead put VAR("VIEWTOUSE") in the switch view list under Setup->Environment. So the view list might be:

    VAR("VIEWTOUSE") schematic spectre

    Then you can sweep the VIEWTOUSE variable as "schematic","extract_C1","extract_C2" or do the same in corners. This of course assumes you use the same view names for each cell, and that you want to have them all the same at the  same time.

    Seemed to work from a quick check that I ran.

    Regards,

    Andrew

  • hchan
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks for the reply. I forgot to mention that our testbenches use config views extensively, and view lists are not compatible with them. We tried setting VAR("VIEWTOUSE") in the view list of config views but the variable is not getting to assembler. Is there a workaround if config views are used? Your suggestion works fine otherwise.

    Regards,

    Henry

  • Andrew Beckett
    in reply to hchan

    Henry,

    Not sure there's really a way to do this simply then. Might be worth contacting customer support (note, I don't think wildcards would be the solution, but perhaps we could come up with a way of allowing variables within the config view somehow).

    Regards,

    Andrew.

  • hchan
    in reply to Andrew Beckett

    Hi Andrew,

    Thanks for the confirmation.

    We will instead implement the view-switch by creating corner-specific model files and select the corresponding section at different corners.

    Regards,

    Henry

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