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PCM3070: Implement VU Meter in Process Flow?

Part Number: PCM3070

Hi team,

I need to implement a VU meter in my PCM3070 design, and I'm trying to do it using a peak detector. However, I cannot figure out which registers I should read out to get the output level.

Do you have any recommendations regarding how to implement this?

Thanks,

Brian

  • Hi Brian,

    The process flow snapshot below shows an example usage of the Spectrum Analyzer. The spectrum analyzers specAna_1 and specAna_14 measure the power in 10 different bands defined by the 10 Biquads. Whereas the Spectrum Analyzer specAna_15 measures the average signal power and so works as a VU meter.

    The output of the spectrum Analyzer placed in the I2C memory. The  Component Interface in the "Properties" Panel lists the I2C Book, Page and Register from which to read the Spectrum Analyzer output. The first band output is available in "Component Interface 1", the second band output is available in "Component Interface 2" and so on.

    Regards,

    Diljith M. Thodi