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 Combinational Circuit In RTL Compiler 

Last post Wed, Mar 4 2009 9:17 AM by Kliatakis. 2 replies.
Started by Kliatakis 04 Mar 2009 02:05 AM. Topic has 2 replies and 1251 views
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  • Wed, Mar 4 2009 2:05 AM

    • Kliatakis
    • Not Ranked
    • Joined on Wed, Mar 4 2009
    • Posts 7
    • Points 95
    Combinational Circuit In RTL Compiler Reply

     Hello! I am a newbie in RTL compiler and SOC encounter and I would like to ask you a question.

    now that i have to deal with cores that have a clock the script that i run in RTL compiler is the following:

    read_hdl fpu_div.v

    elaborate

    dc::create _clock [dc::get_ports clk] -period 5 -waveform {0 2.5}
    dc::set_input_delay 1 -clock {clk} [dc::all_inputs]
    dc::set_output_delay 0.5 -clock {clk} [dc::all_outputs]
    dc::set_load 0.001 [dc::all_outputs]
    dc:: set_drive 1.2 [dc::all inputs]

    report timing > reports/repo_DP_FP_DIV
    report area >>reports/repo_DP_FP_DIV
    report power >> reports/repo_DP_FP_DIV
    write_sdc > sdc/sdc_rc_file_DP_FP_DIV
    write -mapped > netlists/DP_FP_DIV.v
    write_sdf > DP_FP_DIV_sdf

    If i have to deal with a core(for example a comparator) which is not clock triggered what do i have to do in RTL compiler? i do not use the commands that concern clock obviously, but do i have to put anything else?
    because if i do this i get this message:

    Warning : Possible timing problems have been detected in this design. [TIM-11]
            : The design is 'My_Comparator_128'.
            : Use 'report timing -lint' for more information.

     

     Thanks In advance!!!

    • Post Points: 20
  • Wed, Mar 4 2009 8:43 AM

    • skillUser
    • Top 10 Contributor
    • Joined on Fri, Sep 19 2008
    • Austin, TX
    • Posts 2,604
    • Points 16,180
    Re: Combinational Circuit In RTL Compiler Reply

     This is probably not the best forum to ask questions on SOC Encounter or RTL Compiler, please try the Digital Implementation forum.

    Regards,

    Lawrence.

    • Post Points: 20
  • Wed, Mar 4 2009 9:17 AM

    • Kliatakis
    • Not Ranked
    • Joined on Wed, Mar 4 2009
    • Posts 7
    • Points 95
    Re: Combinational Circuit In RTL Compiler Reply
    Oh sorry! i will ask there!thanks!
    • Post Points: 5
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Started by Kliatakis at 04 Mar 2009 02:05 AM. Topic has 2 replies.