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CC85XX Low battery beep

Hi,

We are creating a set of headphones that we would like to beep when the battery is low. One way we have of doing this is that we have an MCU on the Headphone side that transmits the battery status to the Master (Source) , which then overlays the desired beep onto the current audio output.  We don't want to do it through a LED status as the user is more than likely wearing the headphones thus can't see it.

I noticed there is a tone generator that exists for the production tests. Is it possible that this could then be enabled for host controlled mode. Is this a feature that could make it into the autonomous mode (currently this is the one of the main drivers we have for an external MCU on our headphones) and could this also be mixed onto a currently playing track?

Thanks,

Jeoff

  • Hi Jeoff, 

    Some of the TI codecs (and i'm sure others as well) have "beep" functionality built in, so you do have the option of doing this locally in the headphone where the MCU detects the LED pattern (original status led or when moved to the alternative led for low battery) and set up the CODEC to generate a beep. Do not know all the CODECs in details, but this forum post suggests how this can be done (just did a simple forum search for "AIC3204 beep"):
    http://e2e.ti.com/support/data_converters/audio_converters/f/64/t/93523.aspx 

    Your suggestion to include this in host controlled or autonomous mode however is a good and valid input and something we will take into consideration for future FW upgrades. 

    Hope this helps. 
    Best regards,
    Kjetil 

  • Has this "beep functionality" made the future FW upgrades? Recently purchased the CC85XXDK-HEADSET. Autonomous mode. I would like to configure the CC85XXDK-HEADSET (SLAVE) to generate a tone (AT_GEN_Tone) when one of the MASTER GIO "true" and duplex audio is passed. Please advise.
  • Hi Mason, 

    It has not been implemented and even if it had been, it would not have worked as it would have been implemented locally and we currently do not have any means of passing information other than volume information from master to slave. 

    Regards, 
    Kjetil