一种两线双向高速串行音频数据传输总线控制器的实现方法

A Realization Method of Two-wire Bidirectional High Speed Serial Audio Data Transmission Bus Controller

本文提出了一种两线双向高速串行音频数据传输总线控制器在蓝牙耳机硬件系统中的应用,可以实现芯片间高速传输数据,实现同步发送和接收音频数据以及命令字。同时,通过自定义数据格式,优化了数据格式,并降低了数据发送和接收的复杂度。考虑到PAD的承受能力,目前传输速率最大可以达到18Mb/s。仅使用两线完成了数据的传输,从而大大减少了芯片IO的使用。

This paper proposes a two-wire bidirectional high-speed serial audio data transmission bus controller applied in Bluetooth headset hardware system, which can realize high-speed data transmission between chips, synchronous transmission and reception of audio data and command words. By the self-defined data format, the data format is optimized and the complexity of data sending and receiving is reduced. Considering the bearing capacity of PAD, the maximum transmission rate can reach 18 Mb/s at present. Only two lines are used to complete data transmission, which greatly reduces the use of IO on chip.