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Design hierarchy in Encounter

Aram Shahinyan

Dear Friends,

I have a block with the same structure (sub module) repeating many times. I have done manual placement & routing for one slice

and saved a design.

Now I need to instantiate and use a hand made slice many times (just like instantiating in layout editor)

Any ideas how I can do that?

Thanks in Advance,

Aram

Parents

  • Hi Kari,

    2 issues when not using unique netlist

     Issue 1  Optimization is limited with non unique netlist

    **WARN: (ENCECO-560):   Netlist is not unique. Cell "array_col_slice" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "mux_out" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCOPT-3213):  Netlist is not uniquified -- Some optimization is limited!

     Issue 2 Clock tree synthesis does not work with non unique netlist

    <clockDesign CMD> specifyClockTree -file Clock.ctstch
    Checking spec file integrity...
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "array_col_slice" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "mux_out" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    Module WPREDecoderPerPort is multiply-instantiated in WDecoderPerPort and another module.
    **ERROR: (ENCCK-404):   Your netlist is not unique. CTS requires a unique netlist before it can run clock tree synthesis. Please load a unique netlist into EDI before you run CTS.
     

    Thanks,

    Aram

Reply

  • Hi Kari,

    2 issues when not using unique netlist

     Issue 1  Optimization is limited with non unique netlist

    **WARN: (ENCECO-560):   Netlist is not unique. Cell "array_col_slice" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "mux_out" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCOPT-3213):  Netlist is not uniquified -- Some optimization is limited!

     Issue 2 Clock tree synthesis does not work with non unique netlist

    <clockDesign CMD> specifyClockTree -file Clock.ctstch
    Checking spec file integrity...
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "array_col_slice" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    **WARN: (ENCECO-560):   Netlist is not unique. Cell "mux_out" is a multi-instantiated cell. Uniquify your netlist to avoid the problem.
    Module WPREDecoderPerPort is multiply-instantiated in WDecoderPerPort and another module.
    **ERROR: (ENCCK-404):   Your netlist is not unique. CTS requires a unique netlist before it can run clock tree synthesis. Please load a unique netlist into EDI before you run CTS.
     

    Thanks,

    Aram

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