Methods and apparatus for processing system message data received at an
electronic device that is in a low power mode are disclosed. System
message data is processed by receiving at least one system message
including data for processing by the electronic device while the
electronic device is in the low power mode, generating a message
available indicator responsive to the at least one system message,
generating a process message signal responsive to at least one of (i) the
message available indicator and (ii) the data of the at least one system
message, transitioning device circuitry within the electronic device from
a powered down state to a powered up state responsive to the process
message signal, and processing the data of the at least one system
message using the device circuitry in the powered up state.