CC1121: Can CC1211 configure GPIO as event trigger to external host

Jerry Kuo

Part Number: CC1121

Hi TIer,

My customer use CC1121 as RF transceiver. Can CC1121 use GPIO2 or GPIO3 as event trigger to external MCU/MPU (to wake up MCU/MPU) ?

Thank you.

0 Arthur R☑️ over 2 years ago

Hi Jerry,

As the user manual describes, you can indeed do so: https://www.ti.com/lit/ug/swru295e/swru295e.pdf

For instance, according to chapter 3.4.1.1, you could trigger a GPIO using the IOCFGx registers when the PKT_SYNC_RXTX event is received.

Regards,

Arthur

Sub-1 GHz forum