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Multiple slave - host controlled

Francesco Betti
Intellectual 265 points

Other Parts Discussed in Thread: CC8530

Hi all,

my question is this:

is it possible make a network (using headsetEM) with one master and 3 or 4 slave with the a bidirectional communication between master and slave?

I understand that the cc8530 has a maximun number of 4 channel but it needs an AIC34 codec and on the headset board there is a AIC3204 codec (2 channel); there's no application role in the Purepath configurator similar to this configuration..

Using instead the "dual headset base station" application role, is it possible make the network with one master and 2 slave (bidirectional master-slave)?

if I set the slave's  audio channel setup slave-to-master -> channel right for a slave and channel left for the other one, it should work, right?

Thanks

Best regards

Francesco


 

  • 0
    TI__Expert 7160 points

    Hi Francesco,

    The limitations are 4 slaves and 4 channels in the network. In the following I will use the term "downstream channels" for audio channels in the direction master to slave, and "upstream channels" for audio channels in the opposite direction. As an example it's possible to have a master supporting two downstream channels and two upstream channels. You can then add two headset slaves that consumes the two downstream channels from the master, and in addition sends a mic channel each back to the master. It's also possible to add even more slaves, but these cannot be bi-directional since we now have run out of audio channels. But they can for example be headphones consuming the two downstream channels from the master. The above scenario can be achieved by using headset boards for all the nodes in the network. The onboard aic3204 supports 2 input channels and 2 output channels simultaneously. The only time you need the aic34 is when you want more than 2 input channels or more than 2 output channels on the same node. I hope this answers your question.

    Regards

    Kristoffer

  • 0 in reply to Kristoffer S
    Intellectual 265 points

    Hi,

    Thank you for your support.

    Best Regards

    Francesco