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Metal Fill in Encounter Digital Implementation

yf1990

Hello all,

I created a big multiplexer with Cadence Encounter and it has 4 metal layers. And to avoid some MTOP DRC error I filled the Top layer with metal dummies (rectangular dummies in Metal 4 connected to GND or floating).

But when I import tge GDSII in Cadence Virtuoso, all the layers and standard cells are present except the dummies I created in Cadence Encounter. I don't know why the dummies are not present because these dummies are just rectangular shapes in Metal 4.

 

Many thanks, 

Yoann 

 

 

  • Hi Yoann,

    Are the dummy fill layer types in your stream out mapping file from EDI? Likewise, make sure that layer is getting mapped in properly to Virtuoso.

    Brian

  • Hi Brian,

    Yes, the layer is correctly mapped in virtuoso (I can see one or two of these dummies, but not the entire fill).

    But I found an other way, I can fill the TOP metal directly in virtuoso with the Hit-Kit utilities, and it works very well (the dummies are floating, so I got a warning "Floating Met4" when I make the DRC but I don't think this is an error)

     

    Yoann 

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