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PCM6260-Q1: Signal data anomalies and schema issues

Alan Xia
Expert 4425 points
Part Number: PCM6260-Q1

Hi team，

1、The customer is using PCM6260-Q1 as the Bluetooth microphone ADC to output to H3 SOC. During the handfree test, the TDM data output by PCM6260 collected by H3 has the following red circle convex hull. This convex hull is obviously not human voice. Is this signal related to the chip? How did it come about?

2、In addition, PCM6260 outputs TDM to SOC. Can we configure PCM6260 as a slave, that is, WS/BCK is output from SOC to ADC, and data is output from ADC to SOC?

Thanks!

  • 0
    TI__Expert 4895 points

    Hey Alan,

    Thank you for your question. These would be looked into. Allow 24-48 business hours for a response. 

    Best regards,

    Ore. 

  • 0
    TI__Expert 4895 points

    Hey Alan,

    Could you describe how the signal is coming into the ADC? and yes, the PCM6260-Q1 can be configured as a slave.

    Best regards,

    Ore. 

  • 0 in reply to Ore Ogundana
    TI__Expert 4425 points

    Hi Ore,

    1、The front-end device is the input signal of the microphone. Then enter the ADC

    The prominence of the PCM6260 signal is at the output.

    2、Please tell me about the Slave configuration method of PCM6260.

    How to configure the Slave mode of PCM6260.

    Thanks！

  • 0 in reply to Alan Xia
    TI__Expert 4895 points

    Hi Alan,

    Thanks for the diagram, allow 24-48hrs to get a response regarding this query. 

    Best regards,

    Ore.

  • 0 in reply to Ore Ogundana
    TI__Expert 4895 points

    Hi Alan,

    I have a couple requests on your part while we work towards a solution:

    1. If this problem can be recreated, provide the oscilloscope reading showing the clock rates the PCM6260 is receiving. For example the FLCK and BCLK and all other clocks on display on the oscope coming out of the PCM6260 and being provided by the H3 SOC (the H3 SOC is some kind of processor, correct?).
    2. Are you using the i2c or spi mode between the control interface of the H3 SOC and PCM6260?
    3. Provide the information of the input signal entering the PCM6260 as well. 
    4. Is this signal an output of the H3 SOC?

    When configuring these, the master and slave must both be using the same modes to interact between themselves.

    Best regards, 

    Ore.