Bus Voltage queries

Discussion in 'Homework Help' started by quicksilva, Nov 21, 2011.

  1. quicksilva

    Thread Starter New Member

    Nov 21, 2011
    Hi guys!

    I couldn't find any accurate and direct meaning/definition for a bus voltage, can you help me out in defining what it is and what it does.

    I'm working on some Linksys products and was meaning to see if I can use bus voltage with them.
  2. thatoneguy


    Feb 19, 2009
    Bus voltage is the voltage the external I/O lines between a processor and peripheral components signal each other with. Typically 5V or 3.3V.

    A bus is 8 to 64 separate wires, as in "16 bit" or "32 bit" computer. It's not something to plug into for voltage. It isn't a DC value that can be measured or applied. The voltage on each line of a bus changes (1's and 0's) at MHz speeds to transfer information. Bus Voltage typically is the level that a "1" is defined by or interpreted as a "True/High/On".

    If you are looking to flash a Linksys router with USB to serial converter, that's something you'll need to change on your converter, and would get more help and advice on the Linksys tweaking forums.
  3. bountyhunter

    Well-Known Member

    Sep 7, 2009
    There is another definition of "buss rail" which is just a voltage used to feed circuitry.

  4. thatoneguy


    Feb 19, 2009
    True, but he mentioned "Linksys", I have a USB->TTL Serial adapter that has both 5V and 3.3V V+ pins for flashing the linux kernel onto them so they can do more neat stuff, and de-brick the routers that people tried to change the firmware on through wireless or a bad cat5 or locked up computer or....