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TI Home » TI E2E Community » Support Forums » Data Converters » Audio Converters » Audio Converters Forum » Dual-SPI emulating, LM4F and TLV320AIC3107EVM
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Dual-SPI emulating, LM4F and TLV320AIC3107EVM

This question is answered
Fabien Gaubert1
Posted by Fabien Gaubert1
on Aug 01 2012 05:04 AM
Intellectual460 points

Hi,

I'm trying to follow the application report, but I can't see any signal from the DAC (ie BCLK or WCLK). However MCLK is there.

Must the inverting gate be wired to SSI1 Fss? I use an LM4F.

I power the board as described in the bellow post, but I think everything is fine since I can communicate with the DAC using I2C.

http://e2e.ti.com/support/data_converters/audio_converters/f/64/t/204962.aspx

Thank you.

Fabien

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  • Converter Apps
    Posted by Converter Apps
    on Aug 07 2012 12:58 PM
    Mastermind18280 points

    Hi Fabien,

    From the linked post, it looks like you solved this issue?

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  • Fabien Gaubert1
    Posted by Fabien Gaubert1
    on Aug 08 2012 03:03 AM
    Verified Answer
    Verified by Fabien Gaubert1
    Intellectual460 points

    Yes, it does work now.

    Powering the DAV EVM without the motherboard is quite complicated. I explained how to do it in this post: http://e2e.ti.com/support/data_converters/audio_converters/f/64/t/204962.aspx

    And there were also an issue in the app note, on the configuration of SW2 of the motherboard, when I tried to use it.

    And I don't know if there is a right and a wrong way of wiring the inverting gate (maybe it could inverse right and left channels). I inverted the first ssi controller, which is used as channel 0.

    Fabien

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