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  3. Lesson #3 on why Baud/s != Bit/s

Lesson #3 on why Baud/s != Bit/s

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  • W This user is from outside of this forum
    W This user is from outside of this forum
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    wrote last edited by
    #1

    Lesson #3 on why Baud/s != Bit/s

    Lots of serial protocols use stuff bits at the data link layer. The data itself is the clock and if there is no change in the data, the clock is lost. So they after every 4 or so consecutive 0s it adds a fictitious 1 to make sure the recipient's clock is synchronized.

    H 1 Reply Last reply
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    • W [email protected]

      Lesson #3 on why Baud/s != Bit/s

      Lots of serial protocols use stuff bits at the data link layer. The data itself is the clock and if there is no change in the data, the clock is lost. So they after every 4 or so consecutive 0s it adds a fictitious 1 to make sure the recipient's clock is synchronized.

      H This user is from outside of this forum
      H This user is from outside of this forum
      [email protected]
      wrote last edited by
      #2

      Doesn't USB use manchester encoding like ethernet? So you have a consistent clock frequency it's just weather the data edge is before or after the midpoint.

      W obinice@lemmy.worldO 2 Replies Last reply
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      • H [email protected]

        Doesn't USB use manchester encoding like ethernet? So you have a consistent clock frequency it's just weather the data edge is before or after the midpoint.

        W This user is from outside of this forum
        W This user is from outside of this forum
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        wrote last edited by
        #3

        Beats me. I just know that serial protocols do all kindsa fun stuff at the data link layer to maintain data integrity. Stuff bits, optional parity bits, weird timing changes.

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        • H [email protected]

          Doesn't USB use manchester encoding like ethernet? So you have a consistent clock frequency it's just weather the data edge is before or after the midpoint.

          obinice@lemmy.worldO This user is from outside of this forum
          obinice@lemmy.worldO This user is from outside of this forum
          [email protected]
          wrote last edited by
          #4

          Hello from Manchester! 👋😃🇬🇧

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