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Waking up host processor when audio is present

Ken Morenz
Prodigy 10 points


Hello, I am trying to design a wireless product that will have a host processor connected to a CC85XX chip. I want both the host processor and the CC85XX to go into a low power standby mode, but I want the CC85XX to wake up and wake up the host processor (not the other way around) when RF is sensed. Is there any way to do this, or do I have to run the CC85XX in autonomous mode to do this? Thanks for any help.

Ken

  • 0
    TI__Mastermind 21125 points

    Hi Ken, 

    There is no such thing as a "wake-on-radio" feature built into the CC85xx, but in host control mode you do have the ability to set up some interrupt sources for your host. Please see the User Guide and section 3.2.2 for more information. Believe, based on your description, that the best choice would be the EVT_PS_CHG that will be set when the power state of the CC85xx change. 

    Section 3.7.1.4 says a little bit more on this subject. 

    You can find the Users Guide here:
    http://www.ti.com/lit/ug/swru250k/swru250k.pdf

    Please let us know if you have more questions.
    Best regards,
    Kjetil