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Altera_Forum's avatar
Altera_Forum
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15 years ago

PIn for LINEin, MIC, LINEout

Hi Guys,

I am working on my cyclone 2 FPGA and I am applying my Noise cancellation technique in to it. I need to connect 2 MIC and a headphone to my FPGA so I want to incorporate the LINEin, MIC and LINEout pins but I dont know whats there PIN assignments are... Could someone help me by telling me the PINs for MIC, LINin and LINEout..

Thanks

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    A FPGA doesn't provide analog in- or outputs that would be needed for your project. Many development kits, e.g. the popular DE2 board has a codec chip to interface audio signals. The demonstration projects shipped with the board show the basic operation of the codec.

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    I have a cyclone 2 DE 1 board which is a Development kit. There is a demo for karaoke but I don't understand how to assigned MIC LINE in pin for my algorithm......

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    The input source selection is done by WM8731 control registers. Unfortunately I'm not using the development kit, so I can't give detail hints. Basically, the WM8731 datasheet should contain all necessary information.