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    • 17. 发明申请
    • SERIAL TIME-DIVISION-MULTIPLEXED BUS WITH BIDIRECTIONAL SYNCHRONIZATION/CONTROL WORD LINE
    • 串行时分多路复用总线,具有双向同步/控制字线
    • WO2015148992A1
    • 2015-10-01
    • PCT/US2015/023122
    • 2015-03-27
    • QUALCOMM INCORPORATED
    • TANG, ZhilongRABII, Khosro MohammadSIENKO, Matthew David
    • G06F13/42H04J3/06H04B7/26
    • H04L7/048G06F11/1004G06F13/4286G06F13/4295H04J3/0644H04J3/0652
    • One feature pertains to the synchronization of a serial time-division-multiplexed bus interconnecting an audio processing subsystem (i.e. a local node) with an audio coder-decoder (CODEC) subsystem (i.e. a remote node.) Control signals are transmitted along a bidirectional transmission line of the bus from the audio processing subsystem to the audio CODEC subsystem. The audio processing subsystem tracks an internal state machine phase count as the control signals are transmitted. The audio CODEC subsystem also tracks an internal state machine phase count as the signals are received. Transmission of control signals by the audio processing subsystem is periodically paused or suspended for a fixed interval of time based on the phase count to allow the audio CODEC subsystem to send a synchronization indicator signal back to the audio processing subsystem, which the audio processing subsystem uses to verify synchronization. This may be performed, for example, once every one hundred-twenty phase counts.
    • 一个特征涉及将音频处理子系统(即本地节点)与音频编码器 - 解码器(CODEC)子系统(即,远程节点)相互连接的串行时分多路复用总线的同步。控制信号沿双向传输 总线的传输线从音频处理子系统到音频CODEC子系统。 当发送控制信号时,音频处理子系统跟踪内部状态机相位计数。 随着信号被接收,音频CODEC子系统还跟踪内部状态机相位计数。 音频处理子系统的控制信号的传输基于相位计数周期性地暂停或暂停一段固定的时间间隔,以允许音频CODEC子系统将同步指示符信号发送回音频处理子系统使用的音频处理子系统 验证同步。 这可以例如每一百二十个相位计数执行一次。