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  • STA- Timing path from fast clock to slow clock
    you can set multicycle path for both the conditions i e from slow clock to fast clock and from fast clock to slow clock for the condition from slow clock to fast clock set_multicycle_path x -setup -from launch_clk(slow) -to capture_clock(fast) -end ---> which will add multicycle to the capture clock for the condition from fast clock to slow clock
  • multi cycle path example code implementation - Forum for Electronics
    a) do the RTL code with the multicycle path in mind if you are sampling from a multicycle path, you must only do when the data is actually valid b) having a multicycle "notion" coded into RTL is not sufficient -- that is why the example above doesn't work on its own
  • Multicycle path or False path - Forum for Electronics
    There is a general guideline that when ever the data crossing the clk domain in your design, give cosntraints set_false_path -from clk1 -to clk2 But if we have a case as show in the attached diagram, then should we give multicycle constraint like : set_multicycle_path 2 -setup -end -from clk1 -to clk2 or false path constriant like :
  • Multicycle path and metastability | Forum for Electronics
    Re: multicycle path and metastability In the first order, multicycle and metastability are unrelated topics If a data transfer has been correctly identified as multicycle and respectively constrained, there can't be setup and hold violations and hence no metastability
  • What does multicycle path mean? | Forum for Electronics
    Re: Multicycle path A multicycle path describes a signal that is generated at one clock edge and is not used by the following circuitry until more than one clock period later In other words, it is a signal that intentionally takes longer than a clock period to become stable The backend person needs to know this to set the timing constraints
  • Multi cycle path of N clock cycles | Forum for Electronics
    For me, set_multicycle_path is used with below condition: - Timing violation on a path - Functional verification prove that, there is more than 1 cycle for capture FF to use the signal propagated from launch FF, on that path Hence, you need to ask Logic designer to provide set_multicycle_path
  • Hold, setup check for multi cycle path | Forum for Electronics
    set_multicycle_path -hold 1 The rule is: Hold cycle = (setup argument) -1 - (hold argument) Based on this equation, you need to derive a hold multiplier value to be specified in the set_multicycle_path command In the above example, to do a "zero" cycle hold check, 0 = (2) -1 - (hold argument) ; Hold argument (multiplier) = 1
  • CRPR calculation for multicycle path - Forum for Electronics
    CRPR calculation for multicycle path Thread starter chevuturi; Start date Oct 22, 2024; Oct 22, 2024 #1 C
  • What is multicycle path and false path? | Forum for Electronics
    Multi cycle path a timing path in which , between lanching edge and capturing edge it takes several cycles of the clock False path is a path which are not sensitised because of its logic configuration, operating mode with known constraints use set multi cycle path , reference clock and no of cycles and set false patn commands in PT
  • How does multicycle path arise at CDC even when we use asynchronous . . .
    How does multicycle path arise at CDC when we use asynchronous fifo? When we cross from a faster clock domain to slower domain, we use an asynchronous FIFO to avoid data loss due to slower sampling rate at the receiving clock domain But in the following post in this forum, it was discussed about setting multicycle path and false path in CDC





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