公开(公告)号：US20250147713A1

公开(公告)日：2025-05-08

申请号：US18500224

申请日：2023-11-02

Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD.

Inventor： Gaofeng Fan ,  Qi Cai ,  John B. Bowlerwell ,  Richard Turkson ,  Anindya Bhattacharya ,  Bhoodev Kumar

IPC: G06F3/16

Abstract: Circuit techniques reduce or prevent audible artifacts in a Universal Audio Jack (UAJ) interface circuit, improving handling of mis-configuration/mis-attachment of devices. The interface includes at least one terminal for accepting an audio input signal or providing an audio line output signal coupled to an input or output of a first audio circuit. The first audio circuit operates from a low voltage domain and receives the audio input signal or provides the audio line output signal. A second circuit operates from a higher voltage domain and a switching circuit couples the at least one terminal to the second circuit. The output is slew-rate controlled to control a transition time of the output, so that audible artifacts in the audio input signal or the audio line output signal that could be generated by the switching circuit connecting the second circuit to the at least one terminal are avoided.