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Thread: Accessory Indication resistance values

  1. #1
    Default Accessory Indication resistance values
    I wanted to start a thread where people could post resistance values of accessories for iphone 3g, nano, touch (ie. a/v cables, docks, any kind of adapter connected to the dock). The value is how the iphone/ipod knows which type of accessory is connected

    Anyone trying to make a homebrew cable or bypass for an older accessory will need this info.
    -Model of ipod/iphone
    -function
    -resistance value

    I opened my bluetooth audio adapter(iphone 3g) and got 95K ohm reading. It uses the serial and audio lines.

    Edit
    The resitor connects pin 21 to ground.
    Last edited by popavo; 11-19-2008 at 05:50 PM.

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