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Propagated clocks

gchalive
How do i set propagated clocks in RC. Is there an equivalent command to the synopsys command set_propagated_clocks. Thanks
Parents
  • Hi ,

    I have come across this in RC manual:
    "propagated_clocks_by_mode"
    Reading this attribute gives all the propagated clocks in the design..It that is the case then I am assuming there is a way to set a clock as proagated clock. Please confirm.

    I need to use this because my circuit has a generated clock and to get exact timing i need to set it as propagated clock. To be more clear, if I have a two stages of sequential elements, and the first stage outputs generates clock for the second stage flipflops.
    I would  need to make the complete block work in single clock. So while doing timing the clock arrival time of the second stage flipflop should be clock to q of first stage seq element+combinational delay that generates clock. This I can achieve only by propagating clocks.

    Thanks
Reply
  • Hi ,

    I have come across this in RC manual:
    "propagated_clocks_by_mode"
    Reading this attribute gives all the propagated clocks in the design..It that is the case then I am assuming there is a way to set a clock as proagated clock. Please confirm.

    I need to use this because my circuit has a generated clock and to get exact timing i need to set it as propagated clock. To be more clear, if I have a two stages of sequential elements, and the first stage outputs generates clock for the second stage flipflops.
    I would  need to make the complete block work in single clock. So while doing timing the clock arrival time of the second stage flipflop should be clock to q of first stage seq element+combinational delay that generates clock. This I can achieve only by propagating clocks.

    Thanks
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