I^2C接口在音频控制器中的实现  

Realization of I^2C interface in the audio frequency controller

作　　者：张涛[1] 王婧[1] 郑冬军[1] 

机构地区：[1]武汉科技大学信息科学与工程学院,武汉430081

出　　处：《信息技术》2007年第10期41-45,共5页Information Technology

摘　　要：讨论了I2C总线的原理、特点及其在音频控制器中的设计与实现。实现了一个能够产生0^-79dB的衰减范围(1dB/阶)的二声道音量控制信号,该I2C接口通过自身的物理地址进行选通,文中对工作条件和各种信号进行了具体的描述和实现,重点研究了起始结束判断单元和返回信号产生单元的实现。This paper discusses the principle,characteristic of I2C bus and its design in the audio frequency controller.The control signals are realized,which can control two channel volume from 0～-79dB.The I2C interface has its hardware address.The work qualification and several signals are depicted and realized.It gave emphasis to the cell of state pause judgments and the cell of producing ACK signals.

关 键 词：I2C接口 音频控制 起始结束 应答 

分 类 号：U463.6[机械工程—车辆工程]