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Mentor Graphics Calibre LVS with black-boxes

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HyperboL

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calibre lvs box

There is one problem during LVS process in CALIBRE:

There is one cell in project without real topology (only "abstract" - layout with pins). All the connections checked correctly, except connections to this cell. I.e. unconnected pins couse NO violations.

Is it possible to check connections to black-box cell during LVS in flat or hierarchical mode?
 

nafraf

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calibre lvs black box

What layout editor are you using? mentor IC station lets you to extract the NETS and connectivity database, with that function you can test the connectivity.
 

shiowjyh

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calibre + box lvs

Have you ever try to delete/exclude that cell instead?

Regards,
 

jizhongren

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calibre blackbox

Yes, you can delete the block-box cell in layout and netlist.
 

Hughes

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calibre lvs blackbox soft connection

You may replace the black-box with a dummy cell with some devices (may be as simple as a grounded resistor) connected at the pin.
 

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