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Importing DXF with specified core layers into Allegro

DavidRC

I have a .dxf file for a footprint that has a stackup specified by our signal integrity team.  The .dxf includes core layers and prepreg.

When I import I don't know what Class and Subclass to use for those layers.

Any suggestions?

Thanks,

  • steve
    Try creating the subclasses you need first using Setup - Subclasses then map the required layers in DXF to the new classes.
  • DavidRC

    I am able to import the .dxf but still have an issue.  The .dxf is for a footprint that includes trace routing to escape the pin field of the connector.  The trace routing shows up in Allegro but only as an outline.  When I do a "Show Element" it only has zero width lines that make up the outline.

    Is there any way to get Allegro to import these shapes as traces or copper areas?

    If not, is there any way to convert these outlines to traces or copper?

    Thanks

  • steve
    If the outline is closed you can try Shape - Compose Shape, set the Options layer to ETCH/TOP and then window select the outline. This will create a copper shape on that layer. When you use this symbol that copper shape will consume the net of the pin it is attached to (as long as the copper shape covers the centre (origin) of the pin). The alternative is to use the Layout - Connections command to add the routing in the symbol. You can use the lines that are there as a template (so use right click snap pick to etc to match it).
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