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Import DEF to Encounter

FormerMember
FormerMember

hi everyone,

this is my current situation. I need to do pnr but the .lib files are not available. So I try import DEF file, which is export from Virtuoso, to  Encounter but I've faced some problems like these:

_  when I imported the DEF file to Encounter, these kind of warning occur and the Encounter layout contains almost nothing

 **WARN: (ENCDF-200): Instance I383 is not found in db and ignored.

If this is a physical-only instance, it should have '+ SOURCE DIST' attribute.

_ So I  exported DEF with flattened layout, but there is nothing in DEF this time.

I've searched a lot but still can't find the answer.

I'm new with Encounter so please teach me a lot.

Thank you in advance.

  • DEF is not a substitute for .lib. They contain different kinds of information. You need a design netlist, usually verilog, to start. A DEF might contain physical information like placements or power grid. The .lib is the timing information for the cells.
  • FormerMember
    FormerMember
    thank you for your comment Kari. I actually gave up on that after trying for a while. btw, lib and verilog was delayed release that time so I tried to used another way.

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