公开(公告)号：US20120250877A1

公开(公告)日：2012-10-04

申请号：US13077458

申请日：2011-03-31

申请人： Taiyi Cheng ,  Hongwei Kong ,  Nelson Sollenberger ,  Mark Fullerton ,  Chin Sieh Lee ,  Timothy Pong ,  Yafang Feng ,  Claire Marie Suzanne Simeon ,  Michael Liu ,  Kenneth Ma ,  Chaoyang Zhao

发明人： Taiyi Cheng ,  Hongwei Kong ,  Nelson Sollenberger ,  Mark Fullerton ,  Chin Sieh Lee ,  Timothy Pong ,  Yafang Feng ,  Claire Marie Suzanne Simeon ,  Michael Liu ,  Kenneth Ma ,  Chaoyang Zhao

IPC分类号： H04B3/00

CPC分类号： G06F3/165

摘要： A central audio hub, comprising an audio switch, a bus matrix, and an audio buffer, is triggered to read audio samples of an audio stream from the audio buffer. The central audio hub routes the audio samples via the bus matrix to one or more surrounding audio modules such as an audio codec and an audio interface communicatively coupled to the central audio hub. The audio stream may be directly from an external application processor or from an external DDR. With the audio stream from the DDR, a DMA controller may fetch the audio samples from the DDR in response to a request received from the audio buffer, and store the fetched audio samples into the audio buffer for routing. The audio switch may be triggered at a determined sampling rate to read the audio samples from the audio buffer utilizing a determined sample format, and to route the audio samples to the surrounding audio modules.

摘要翻译： 触发包括音频开关，总线矩阵和音频缓冲器的中央音频集线器，从音频缓冲器读取音频流的音频样本。 中央音频集线器将音频样本经由总线矩阵路由到一个或多个周围的音频模块，例如通信地耦合到中央音频集线器的音频编解码器和音频接口。 音频流可以直接来自外部应用处理器或外部DDR。 利用来自DDR的音频流，DMA控制器可以响应于从音频缓冲器接收到的请求，从DDR获取音频样本，并将获取的音频样本存储到音频缓冲器中进行路由。 可以以确定的采样速率触发音频开关，以利用确定的采样格式从音频缓冲器读取音频样本，并将音频样本路由到周围的音频模块。