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 sdf backannotation 

Last post Sun, Nov 16 2008 9:00 PM by gops. 4 replies.
Started by gops 30 Oct 2008 03:41 AM. Topic has 4 replies and 2074 views
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  • Thu, Oct 30 2008 3:41 AM

    • gops
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    sdf backannotation Reply
    I have generated the netlist(verilog) and sdf file from Encounter.Now i need to simulate the netlist in nclaunch.Can any one please tell what are the library files required for the purpose. I have vital libraries with me , but they are of .vhd extension. Can i use those vital libraris for simulating verilog netlist OR do i need to procure any verilog libraries for the same?
    • Post Points: 20
  • Wed, Nov 12 2008 12:23 PM

    • Mickey
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    • Austin, TX
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    Re: sdf backannotation Reply
    Although you can use the vhdl library, it would be best to obtain and use a verilog version of the library cells. This is because there could be a large performance impact due to having to transition through the language boundary for every cell.  The library would be something provided by the vendor whose cells are being used.
     
    Since you already have VHDL libraries, another method could be to have the netlist created in VHDL.
     

    Let me know if this helps.

    Best regards,
    Mickey
    • Post Points: 5
  • Thu, Nov 13 2008 8:31 PM

    • gops
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    Re: sdf backannotation Reply
    Hi Mickey;

    thanks for the reply.

    You told to create the netlist in VHDL.

    But i think its not possible to generate VHDL netlist from encounter.Isn't it ?

    thanks
    gops
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  • Fri, Nov 14 2008 7:50 AM

    • Mickey
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    Re: sdf backannotation Reply

    Hi Gops,

    Unfortunately I missed the indication that you are using Encounter.  With that in mind it would be good to use a verilog version of the cell library.  You can still use the VHDL library if you don't have a verilog version, but there will more than likely be a performance impact due to the large number of language boundary crossings that can be forseen in such a situation.

    Best regards,
    Mickey

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  • Sun, Nov 16 2008 9:00 PM

    • gops
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    Re: sdf backannotation Reply
    Hi Mickey;
     
    thanks for the reply.
     
    gops.
    • Post Points: 5
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Started by gops at 30 Oct 2008 03:41 AM. Topic has 4 replies.