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Propagated clock for reg2out

Aram Shahinyan

Dear Friends,

I'm looking into Solution with ID 11327942. Can't figure out how clock latency 2.5ns is decided for reg2out paths

set_clock_latency 2.5 -rise clk2

 Can you please give me a hint?

 Thanks,

Aram

Parents

  • See my first response....................

    We always referenced ip / op delays relative to a "virtual" clock.
    This virtual clock must track the real clock before and after CTS.
    You can automatically update the virtual clock after CTS with the command update_io_latency.

    We have been doing it this way for so long I forgot  the reason why, but there must be a valid reason to put me through decades of pain .
    If you are doing anything different, like setting the output delay relative to the "actual" clock, sorry you are on your own.


    Shawn

  • in reply to fitz

    Hello

    I am facing a problem while using the command update_io_latency

    after i run the command. I used timeDesign to save the reports. But io_latency is not saved in the report folder. Is there anything that I could check to make sure io_latency is updated.

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  • in reply to fitz

    Hello

    I am facing a problem while using the command update_io_latency

    after i run the command. I used timeDesign to save the reports. But io_latency is not saved in the report folder. Is there anything that I could check to make sure io_latency is updated.

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