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Flattened sdf file from hierarchical project

Xtof

Hi,

I need to export both a hierarchical and a flattened verilog netlist  from Encounter (8.1) with their corresponding sdf files. For the netlist, I use 'saveNetlist filename.v' and 'saveNetlist -flat filename_flat.v' commands but for the sdf, 'write_sdf' doesn't support the -flat parameter.

 How do I get the sdf for the flattened netlist?

Thank you for the help!

 Xtof

Parents

  • I'm not suggesting you start from scratch with the flat netlist. With your design up, you can write out either a flat or hier verilog. Also write out a DEF file. DEF is by nature "flat", so it should match either netlist. Your layout info should be the same. In a new session, read in the flat verillog and the DEF. Let us know if it works for you.

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  • I'm not suggesting you start from scratch with the flat netlist. With your design up, you can write out either a flat or hier verilog. Also write out a DEF file. DEF is by nature "flat", so it should match either netlist. Your layout info should be the same. In a new session, read in the flat verillog and the DEF. Let us know if it works for you.

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