AUDIO CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD

The present invention provides an audio control circuit (100) comprising an USB interface circuit (110) and a processing circuit (120).The USB interface circuit (110) is used to connect to a host device (102), and the processing circuit (1 20) is configured to perform enumeration with the host devic...

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Bibliographic Details
Main Authors Tsao, Lun-Cheng, Lin, Chi-Yih, Chen, Ko-Wei
Format Patent
LanguageEnglish
French
German
Published 15.06.2022
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The present invention provides an audio control circuit (100) comprising an USB interface circuit (110) and a processing circuit (120).The USB interface circuit (110) is used to connect to a host device (102), and the processing circuit (1 20) is configured to perform enumeration with the host device (102) via the USB interface circuit (110), and the processing circuit (120) is further configured to determine if the host device (102) operates in a BIOS stage or an operating system stage to generate a control signal according to packets of the enumeration. When the processing circuit (120) determines that the host device (102) operates in the BIOS stage, the processing circuit (120) generates the control signal to enable a de-pop circuit (104); and when the processing circuit (120) determines that the host device (102) operates in the operating system stage, the processing circuit (120) disables the de-pop circuit (104).
Bibliography:Application Number: EP20210187830