Different forms of serial Communication. What is ethernet/

Discussion in 'General Electronics Chat' started by supermankid, Jan 24, 2014.

  1. supermankid

    Thread Starter Member

    May 26, 2013
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    Hi,
    I have used UART, I2C and SPI to communicate between the chips. I understand how the commmunication works.
    In UART- start bit data bit ...stop bit

    In SPI - master sends the clock, chipselect and data

    In I2C - same, but master sends clk and data on pulled up bus

    I was wondering if Ethernet also uses one of these serial protocol or something else.

    Could someone please answer my curiosity :confused:
     
  2. ericgibbs

    AAC Fanatic!

    Jan 29, 2010
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  3. supermankid

    Thread Starter Member

    May 26, 2013
    36
    1
    @ericgibbs : I went through this site as well but it doesnot say how it actually sends/receives the data....this is like the top layer description...i wanted to know how it operates....how to starts communication....sends data....

    Is it similar to SPI??

    In the link it sends a lot of bits in one packet...it should have been slow....how is it sooo fast...

    Thanks for your repsonse
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,564
    2,379
    There is both hardware standards with their attendant software protocols, and then there is the packet format, which depends on what device you are communicating with.
    Packet formats such as CanBus, Modbus, Sercos to name a few.
    http://en.wikipedia.org/wiki/List_of_automation_protocols
    Max.
     
    Last edited: Jan 24, 2014
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  5. ifixit

    Distinguished Member

    Nov 20, 2008
    639
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    http://en.wikipedia.org/wiki/HDLC

    The HDLC framing protocol is used for the next layer above the physical layer. The physical layer can be Ethernet, or dozens of other transport means. The receivers wait and look for the HDLC framing pattern rather than a start bit. Read about it on Wikipedia.

    Thousands of point-to-point HDLC frames of data have brought this message to you and make this forum's web page possible to appear on your computer screen.

    Ifixit
     
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