公开(公告)号：US20240380396A1

公开(公告)日：2024-11-14

申请号：US18428442

申请日：2024-01-31

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Hamed SADATI ,  John A. BRESLIN ,  Sushanth HEGDE ,  John L. MELANSON

IPC: H03K17/30 ,  H03K17/042 ,  H03K17/06

Abstract: Pre-conditioning circuitry for pre-conditioning a node of a circuit to support a change in operation of the circuit, wherein the circuit is operative to change a state of the node to effect the change in operation of the circuit, and wherein the pre-conditioning circuitry is configured to apply a voltage, current or charge directly to the node to reduce the magnitude of the change to the state of the node required by the circuit to achieve the change in operation of the circuit.

公开(公告)号：US20210165055A1

公开(公告)日：2021-06-03

申请号：US16951775

申请日：2020-11-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John A. BRESLIN ,  John B. BOWLERWELL ,  Clive R. GRAHAM

IPC: G01R31/69 ,  H01R13/66

Abstract: The present disclosure relates to circuitry for detecting connection of a plug of an audio accessory device to a socket of an intermediate cable that is connected to a host device, wherein the plug of the accessory device is of a different type than the socket of the intermediate cable. The circuitry comprises a monitoring unit comprising a first terminal configured to be electrically connected to a first socket contact of the socket that is in electrical contact with a first plug contact of the plug when the plug is fully received in the socket; and a second terminal configured to be electrically connected to a second socket contact of the socket that is in electrical contact with a second plug contact of the plug when the plug is fully received in the socket. The monitoring unit is configured to: detect a first impedance of a first signal path from the first terminal; detect a second impedance of a second signal path from the first terminal; and detect a third impedance of a third signal path from the second terminal, wherein the circuitry is configured to output a signal indicative of detection of connection of the plug to the socket in response to detection by the monitoring unit that the detected first, second and third impedances do not correspond to expected first, second and third impedances.

公开(公告)号：US20210333814A1

公开(公告)日：2021-10-28

申请号：US17072070

申请日：2020-10-16

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： John A. BRESLIN

IPC: G05F1/575

Abstract: The present disclosure relates to voltage regulator circuitry. The voltage regulator circuitry comprises an output device configured to provide a regulated output voltage and a controllable shunt device configured to provide a current path from the output device for a shunt current. The shunt current is variable according to a control signal supplied to the controllable shunt device.