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PCM5242: Hardware mode no sound output

Part Number: PCM5242

Hi

I want to ask you, my customer set HARDWARE MODE but no sound output

could you help check the PCM5242 schematic as below and any need to adjust

Thank you

HUS03-4K6G_REVA.pdf

  • Hi Gareth,

    The schematic looks okay to me.  You should verify the basics with the customer for more information:

    1. Is the device correctly powered.  Can you confirm that the appropriate pins are 1.8V and 3.3V?

    2. Is there valid I2S data being supplied to the device? What frequencies are they using for the SCK, LRCK, BCK?

    3. If the clocks are valid, the charge pump should be working.  You would see approximately -3.3V on the VNEG pin.

    Thanks,

    Paul