Voltage and speed relation in USB

Discussion in 'Embedded Systems and Microcontrollers' started by Hardware Freak, Jul 2, 2010.

  1. Hardware Freak

    Thread Starter New Member

    Jun 11, 2010
    7
    1
    What is the relation between voltage and speed in USB.

    In USB 2.0 voltage = 4.4V speed=480Mbps,but
    In USB 3.0 voltage = 4.0V speed=upto 3.2Gbps.


    How is this achieved, as speed is increased voltage is decresed...:rolleyes:
     
  2. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Where did you get this information?

    As for speed, usb3.0 uses a full-duplex (talks and listens at the same time) to get increased bandwidth.

    The voltages look off to me. The signal voltages have never been that high.. As far as I know.
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
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