Abstract: A wireless device that can save and restore state information is disclosed. The wireless device stores state information in non-persistent registers during an active power state, routes the state information from the non-persistent registers to a non-volatile memory, via a boundary scan chain using one or more test signals, based on an indication that the wireless device is to enter a low-power state, and enters the low-power state after the state information is stored in the non-volatile memory. The wireless device may remove power from the processor, the non-persistent registers, the non-volatile memory, and one or more other portions of the wireless device during the low-power state. The wireless device may return to the active power state after a period of time and restore the state information to the non-persistent registers upon returning to the active power state.

Abstract: An IoT device includes a serial interface controller coupled to external sensors, a Bluetooth controller to transmit signals over a Bluetooth connection, a microprocessor, and a sensor hub that controls operations of the serial interface controller and the Bluetooth controller. The microprocessor is initialized to a normal power state and, in response to a first trigger, is placed in a low-power state during which some operations, including at least including polling the sensors for data, are delegated from the microprocessor to the sensor hub. In this way, the microprocessor can sleep or hibernate, thereby reducing power consumption. The microprocessor is returned to the normal power state in response to a second trigger, and responsibility for the delegated operations returns to the microprocessor. The delegated operations may also include storing the polled sensor data in memory and/or facilitating transmission of the sensor data to a host device over the Bluetooth connection.

Abstract: Repeater circuit with high performance repeater mode and normal repeater mode is provided and described. In one embodiment, switches are set to a first switch position to operate repeater circuit in the high performance repeater mode. In another embodiment, switches are set to a second switch position to operate the repeater circuit in the normal repeater mode.