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1 Master - 4 slave / 2 slave configuration - upstream

Winnefred Kinggam
Intellectual 305 points
Other Parts Discussed in Thread: CC8531, PCM5310

Dear Ti,

I am currenly using CC85XXDK ( CC8531 with AIC3101 codec ) as a Master and trying to establish an upstream microphone communication with two slaves which are CC85XXDK-Headsets ( CC8531 with AIC3204 codec), I have tried using the TI-purepath configurator and could able to pair the master with two slaves. when listening through the HP output of master, i could hear only one microphone's signal, even though the second slave is paired, the microphone signal is not heard.

Can you send me the configuration files for the same ?

Also, i am trying to establish the same concept with a master containing AIC34 codec for establishing upstream with 4 slaves ( CC85XXDK-Headsets ( CC8531 with AIC3204 codec)). 

Can you send me the configuration files for the same too ?

Thank you,

With best regards,

Winnefred K

  • 0
    TI__Mastermind 21125 points

    Hi Winnefred, 

    Most likely you are close to getting this to work. For the master, remember to set Logical channels to Microphone 0 and Microphone 1:

    Similar; the slave must be set up with Microphone 0 and the other Microphone 1:

    An alternative can be to use dynamic channel allocation (automatic or button/pin) for the slaves. First to join the master will become microphone 0 and the second microphone 1. In this scenario the slaves should be set up identically:

    With regards to the AIC34 and four microphone setup, please have a look at the files posted by Kristoffer here:
    http://e2e.ti.com/support/low_power_rf/f/382/t/209895.aspx

    Best regards,
    Kjetil 

  • 0 in reply to Kjetil
    Intellectual 305 points

    Hi Kjetil,

    I would like to know, if TI have any audio mixer IC's ( Audio ADC's ) available, which are compatible with CC8531 & its like devices ( 12S, I2C protocol users )

    which  could perform such function mentioned in the below diagram. Will PCM5310 serve this purpose ?

    Please let me know.

    Thanks,

  • 0 in reply to Winnefred Kinggam
    TI__Mastermind 21125 points

    Hi. 

    First of all, the CC85xx devices can be set up to support any CODEC device that is configured through I2C and/or 4 GIO pins. We support a few out of the box (boviously TI devices) but this can be extended through Audio Device Definition Files (see Configurator help system).

    Back to your question, believe this is best suited for the Don Dapkus and the guys over at the Audio Converters forum who knows these devices better:
    http://e2e.ti.com/support/data_converters/audio_converters/f/64.aspx

    A lot of the CODEC have muxing capabilities and some also mixing, but if you have a DSP in your system it could be used to mix the audio as well. A lot of the multiple input/output devices are just multiple version of a 2in/2out CODEC in one packaging and put some limitation to what can be done.

    Regards, 

    Kjetil