ASROCK Audio header problems

Discussion in 'ASRock' started by Eric Parker, Dec 6, 2006.

  1. Eric Parker

    Eric Parker Guest

    I have a Ferrari case with front audio wires idented
    GND, MIC-IN, MIC-BIAS, SPKOUT L, RETURN L, SPKOUT R, RETURN R
    My ASRock MB AliveNF6G-DVI has an audio header idented
    GND, MIC2_L, PRESENCE#, MIC2_R, MIC_RET, OUT2_R, J_SENSE, OUT_RET,
    OUT2_L

    The manual isn't clear about how to connect these up.
    Any help would be appreciated.

    Thanks

    Eric
     
    Eric Parker, Dec 6, 2006
    #1
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  2. Eric Parker

    Paul Guest

    The computer case is "Intel standard AC'97" while the motherboard
    is HDaudio (Azalia).

    Pg.23 of the downloadable manual has instructions but the
    instructions don't appear to be complete. (They forgot BIAS.)

    MIC-IN MIC2_L
    MIC-BIAS MIC2_R
    GND GND

    SPKOUT_L OUT2_L
    SPKOUT_R OUT2_R

    GND is shared by both jacks and goes to the shield contact on each.
    That is why there are only five wires and not six.

    Return_R and Return_L are no connects. Total 5 of 7 wires
    used from the Ferrari end.

    The return wires on the Ferrari are not needed, since HDaudio
    has plenty of output ports - enough so that the front headphones
    and the rear green Lineout speaker jack, can have their own drivers.
    On AC'97, the return wires were used, to allow sharing the
    lineout wires for both the front headphones and the rear
    speakers. The HDaudio CODEC means no need for return wires.

    MIC_RET and OUT_RET are part of the J_SENSE, and are used
    for plug detection. They have nothing to do with the analog
    audio signals and don't need to be connected. Similarly,
    PRESENSE# is a logic signal used to tell the motherboard that
    an HDaudio header has been installed. Your case wiring is
    AC'97, so the PRESENSE# signal does not need to be asserted.
    Thus, PRESENCE# is also a no connect. (If an HDaudio cable
    was attached, it would ground the PRESENCE signal. Or
    so the theory goes...)

    HTH,
    Paul
     
    Paul, Dec 6, 2006
    #2
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  3. Eric Parker

    Eric Parker Guest

    You should be writing manuals for ASRock, or maybe you've better
    things to do.
    Thanks for the clear response.

    Eric
     
    Eric Parker, Dec 6, 2006
    #3
  4. Eric Parker

    Perito80

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    But as they would have to be it connects you pin the J_SENSE, OUT_RET and MIC_RET in order to make to understand to the motherboard that there is a jack inserted?
    J_SENSE and OUT_RET are in short circuit if the jack it is inserted?
     
    Perito80, Sep 17, 2007
    #4
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