公开(公告)号：US20230171126A1

公开(公告)日：2023-06-01

申请号：US18103137

申请日：2023-01-30

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Matthias Sauer ,  Jorge L. Rivera Espinoza

IPC: H04L12/413 ,  H04L12/40

CPC classification number: H04L12/4135 ,  H04L12/40071 ,  H04L12/40084 ,  H04L2012/40215

Abstract: Embodiments relate to including information in a data packet transmitted by a transmitting integrated circuit (e.g., SOC) to account for a time delay associated with an unsuccessful arbitration attempt to send the data packet over a multi-drop bus. The unsuccessful arbitration attempt by the integrated circuit may delay the transmission of the data packet until the multi-drop bus becomes available for the integrated circuit to send the data packet. The data packet includes a data field to include time delay information caused by the unsuccessful arbitration attempt. A receiving integrated circuit may determine the time that the data packet would have been sent out from the transmitting integrated circuit absent the unsuccessful arbitration attempt based on the delay information. Embodiments also relate to a synchronization generator circuit in an integrated circuit that generates timing signals indicating times at which periodic events occur at another integrated circuit.

公开(公告)号：US20220382701A1

公开(公告)日：2022-12-01

申请号：US17818237

申请日：2022-08-08

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Matthias Sauer ,  Jorge L. Rivera Espinoza

IPC: G06F13/40

Abstract: Embodiments relate to a billboard circuit that stores context information received from various component circuits in an electronic device. The context information indicates an operating status of the corresponding component circuit, system or shared resources. The stored context information may be retrieved by one or more component circuits when events (e.g., turning on of a component circuit) are detected. By using the billboard circuit, a component circuit may detect changes in the operating status of other components circuits and configure or update its operations even when the changes occurred while the component circuit was asleep or disabled. The billboard circuit may monitor updating of the context information by the component circuit and initiate notification to other components circuits when certain entries of the context information is updated.

公开(公告)号：US11176069B2

公开(公告)日：2021-11-16

申请号：US16885889

申请日：2020-05-28

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Camille Chen ,  Vijay Kumar Ramamurthi ,  Alon Paycher ,  Matthias Sauer ,  Bernd W. Adler

IPC: G06F13/362 ,  G06F13/24 ,  G06F11/34 ,  G06F11/30 ,  G06F13/28

Abstract: Embodiments relate to an integrated circuit of an electronic device that coordinates activities with another integrated circuit of the electronic device. The integrated circuit includes an interface circuit and a processor circuit. The interface circuit communicates over a multi-drop bus connected to multiple electronic components. The processor circuit receives an authorization request from the integrated circuit via the interface circuit and the multi-drop bus. The received authorization request relates to authorization to perform an activity on the other integrated circuit. In response to receiving the authorization request, the processor circuit determines whether the other integrated circuit is authorized to execute the activity. In response to determining that the other integrated circuit is authorized to execute the activity, the processor circuit sends, to the other integrated circuit over a configurable direct connection, an authorization signal authorizing the other integrated circuit to execute the activity.

公开(公告)号：US20210089483A1

公开(公告)日：2021-03-25

申请号：US16885935

申请日：2020-05-28

Applicant: Apple Inc.

Inventor： Helena Deirdre O'Shea ,  Matthias Sauer ,  Jorge L. Rivera Espinoza ,  Bernd Adler

IPC: G06F13/36

Abstract: Embodiments relate to coordinating the operations of subsystems in a communication system of an electronic device where a coexistence hub device monitors the state information transmitted as coexistence messages over one or more multi-drop buses, processes the monitored coexistence messages and sends out control messages as coexistence messages to other systems on chips (SOCs). The coexistence hub device can also update the operations of the communication system. The coexistence hub device may receive an operation policy from a central processor and may execute the operation policy without further coordination of the central processor. The coexistence hub device broadcasts the control messages as coexistence messages according to the executed operation policy.