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Interrupt details of TLV320DAC3120

Vigneshwaran JN
Prodigy 140 points
Other Parts Discussed in Thread: TLV320DAC3120

Hi,

I have been designing a Audio decoder board using TLV320DAC3120 for DAC. This chip provides an interrupt output for some fault conditions.One such condition mentioned in datasheet is "Data overflow in the DAC processing blocks and filters". But could not find any detailed description regarding when would this interrupt arise and what has to be done as solution etc.
It would be of great help if I could get a much detailed perspective of this interrupt..
Thanks in Advance...

  • 0
    TI__Guru 51346 points

    This interrupt is triggered when the signal clips in the digital domain due to internal processing. You can react to this on the host uC by attenuating the digital audio data or by adjusting parameters for the DSP (e.g. biquad coefficients for filters).

  • 0 in reply to Dominik Hartl11
    Prodigy 140 points

    Thanks for your response.
    I have few more queries on this. please correct me if my understanding is wrong.
    The DAC has dyanamic range compression feature that would avoid clipping of signals in digital domain by automatic gain control. If signal clipping could be avoided by just using this feature, what purpose does the data overflow interrupt serve, or if it has some other cause.