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front panel audio pinout to X-Fi

Discussion in 'General Hardware' started by imperialreign, Aug 31, 2007.

  1. imperialreign

    imperialreign New Member

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    question for anyone with some knowledge on the AC97 pinout . . .

    I've got an X-Fi card with the pinout for the X-Fi I/O drive, but I'm not willing to spend $80 for their front panel drive (I'm sure y'all understand).

    Anyways, I'm planning on doing the mod to wire my front panel wires to the X-Fi with full capability, just wanted to see if the crossover I've figured would look like it should work - just wanting some people to double check me, lol!

    Here's the AC97 pinout, taken from Intel.com:

    1 2
    3 4
    5 6
    7 8
    9 10

    1 Mic_In - Front panel microphone input signal (biased when supporting stereo microphone)
    2 Aud_GND - Ground used by analog
    3 Mic_Bias - Microphone power / additional MIC input for stereo microphone support
    4 Aud_GND - Ground used by analog audio circuits
    5 FP_Out_R - Right channel audio signal to front panel (headphone drive capable)
    6 FP_Return_R - Right channel audio signal return from front panel (when headphones unplugged)
    7 AUD_5V - Filtered +5 V used by analog audio circuits
    8 Key - No pin
    9 FP_Out_L - Left channel audio signal to front panel (headphone drive capable)
    10 FR_Return_L - Left channel audio signal return from front panel (when headphones unplugged)

    and here's Creative's I/O drive pinout for Audigy/X-Fi (as best I've been able to research online):

    1 2 3 4 5 6 7 8 9 10

    1 - Analog ground
    2 - Left out
    3 - Audio backpanel mute (grounded with headphone jack plugged in - I think this is Left Return)
    4 - Right out
    5 - same as pin 3 (I think this is Right return)
    6 - Mic In from front panel
    7 - no pin
    8 - VREF Mic out (voltage reference for mic)
    9 - Mic In mute (ground when mic isn't plugged in, +12V with mic plugged in)
    10 - Audio Detect (ground when headphones plugged in, not normally used)

    Soooooo . . . I've figured this crossover from my AC97 connector to the X-Fi (I list the AC97 pin numbers in the X-Fi pinout configuration):

    2 9 10 5 6 1 8 3 7 4

    The only two that I'm not really sure of is pin 7 and 4, but I might have overlooked something - any second opinions?

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