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  1. How does the second flip-flop in a naive synchronizer "prevent a ...

    Jan 13, 2024 · In this very nice answer it's explained that, fundamentally, a two flip-flop synchronizer's basic operation is to prevent the propagation of a metastable state (effectively, an invalid logic level)...

  2. fpga - vhdl reset synchronizer - Electrical Engineering Stack Exchange

    Nov 15, 2021 · The reset_synchronizer makes sure the reset_sync signal is asserted for at least one rising edge of clk, so no component that uses a synchronous reset will miss it.

  3. How does 2-ff synchronizer ensure proper synchonization?

    Jun 2, 2016 · Using 2-ff synchronizers has been a standard for a signal to cross clock boundaries. And there are lots of paper/figures illustrating the mechanism, such as this one: It seems bclk can only …

  4. Asynchronous FIFO design with PULSE synchronizer

    Mar 30, 2021 · This design doesn't work because if the reads and writes are high in successive cycles (burst transfer), pulse synchronizer output will only output one pulse in destination clock domain.

  5. intel fpga - 2DFF synchronizer output was determined to be a clock by ...

    Oct 1, 2024 · 2DFF synchronizer output was determined to be a clock by timing analyzer Ask Question Asked 1 year, 3 months ago Modified 1 year, 3 months ago

  6. Is it possible to use a 2 flip-flop synchronizer for reset?

    Jun 4, 2024 · This delay would obviously break a requirement for the synchronizer output to reset the design immediately on assertion of the reset at the synchronizer input. My question is for the …

  7. How to properly implement an n-FF synchronizer in Lattice FPGAs?

    Feb 14, 2022 · For an n-flop synchronizer, you would have to use n-1 constraints like above. Also I would recommend to use the syn_keep attribute for the registers used in the synchronizer chain to …

  8. Crossing a single-cycle spike signal from a fast clock domain to a ...

    Jul 29, 2015 · In extension to the described toggle synchronizer from Alex, this synchronizer offers a busy dignal for the 'write' clock domain. So if busy is high, any input will not be synced to the read …

  9. Why don't 2 flip-flop synchronizers have a reset?

    Aug 13, 2022 · Your final sentence describes a reset synchronizer, which is a different circuit from a 2 flip-flop synchronizer. Therefore, I don't feel that this answers my question (s).

  10. Timing Async Reset with Sync Deassert - Electrical Engineering Stack ...

    Jul 2, 2022 · For my design, it seems like the best solution is to use asynchronous resets, but with a reset synchronizer circuit to make the de-assert of the reset synchronous. In this scenario, even …