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Original question:

TLV320AIC3256: Is there a problem with the attached design?

TLV320AIC3256: I can supply the TLV320AIC3256 with the MCLK signal from a 12MHz oscillator

albgarc2014
Genius 3560 points
Part Number: TLV320AIC3256


Hi TI

I can supply the TLV320AIC3256 with the MCLK signal from a 12MHz oscillator, while the WCLK and BCLK signals are supplied from the host MCU.

Would a frequency of 12MHz be fine, or should I use another frequency, such as 12.288MHz?

As an alternative, can I leave MCLK disconnected and use PCM instead of I2S?

Thanks very much.

Best regards.

  • 0
    TI__Mastermind 48675 points

    Hi,

    12.288MHz would be preferred since it is an audio multiple.

    This device only supports I2S, it does not support PCM.

    Best regards,
    Jeff McPherson

  • 0 in reply to Jeff McPherson
    Genius 3560 points

    Hello Jeff,

    Sincerely thanks very much,

    So, can I supply MCLK from an external oscillator with a frequency of 12.288 MHz?
    I am a little confused about PCM because section 10.3.6 of the datasheet says that it supports PCM. Could you please confirm this for me? This is an important point because the host I am going to use is PCM.

    Sincerely, thanks very much. Best regards