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Digital Mic interface with TWL6040

hiteshgambhava
Intellectual 475 points
Other Parts Discussed in Thread: TWL6040

Hi,

I want to connect digital mic (with I2S interface) to TWL 6040.

But TWL6040's I2C line also connect with OMAP 4 processor for register control.

So how can i connect MIC ? Can i connect it with I2C line ? If yes then how can i control it as it doesn't have any I2C address ?

Thanks,

Hitesh Gambhava 

  • 0
    TI__Intellectual 1310 points

    Hello Hitesh,

    You cannot just connect a digital microphone that uses I2S to TWL6040 I2C bus. Please note I2S is a 3-wire interface, it is a peer-to-peer unidirectional audio bus. The I2C bus is a bidirectional bus for moving commands and data between multiple devices with arbitration between them.

    Also TWL6040 does not provide support for digital mic, if you want to use digital mic in your system, please connect it to OMAP4 "DMIC" pins.

    Regards,

    Shaheen