Abstract: A storage device is pre-loaded with an access block including a list of device addresses with which the device is either permitted or not permitted to communicate over a shared bus prior to a bootloader being initiated on the device. A communication circuit is coupled to the storage device, and the circuit is adapted to: (a) obtain a first command to be transmitted over the shared bus to a first device address; (b) determine whether the first device address is in the list of device addresses in the access block; and (c) allow or prevent transmission of the first command over the shared bus based on whether the firt device address is in the list of device addresses. The list of device addresses is bypassed or ignored after the bootloader procedure is completed.

Abstract: Systems and methods are disclosed for resolving bus hang in a computing device. An exemplary system comprises a bus operating in accordance with an interface clock, and a controller in communication with the bus. The controller comprises a finite state machine, where the finite state machine is configured to receive a clock signal from the interface clock and a command signal originating external to the controller. The controller also comprising hang detection logic configured to receive one or more signals that the finite state machine is active, monitor the interface clock, and generate an event notification in response to the interface clock turning off while the finite state machine is active. The controller further comprises a trap handler in communication with the hang detection logic, the trap handler configured to send an interrupt in response to the event notification.

Abstract: In one configuration, an apparatus and a method to operate the apparatus are provided. The apparatus includes at least one processor configured to receive operating information indicating a set of operating frequencies from a first circuit and to select an operating frequency from the set of operating frequencies. The at least one processor is further arranged to configure an operation of a second circuit based on the selected operating frequency. In another configuration, the apparatus includes at least one processor configured to select a set of operating frequencies based a radio frequency operation and to transmit operating information indicating the set of operating frequencies to a control circuit.