| 摘要 |
An audio system including a first audio unit and a second audio unit coupled to the first audio unit through an audio bus. A first processor is coupled to the first audio unit. The first processor is configured to transmit bits comprising audio content to the second audio unit over the audio bus. The first processor is further configured to receive a control command selected from a plurality of control commands, and in response, interrupt the bits comprising audio content and send a preamble and a control message on the audio bus, wherein the control message corresponds to the control command. A second processor is coupled to the second audio unit. The second processor is configured to monitor the audio bus for a preamble, and if a preamble is detected, then process the control message and execute the corresponding control command.
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