【摘要】 I2C总线由于接口简单、协议完善,已经被广泛地应用在消费类电子产品、通信产品和工业电子产品中,成为国际标准。论文提出一种基于两级桥接口的I2CSLAVE器件的内部结构,该结构一方面能够根据系统的需求灵活地集成和裁减各种功能的IP核模块,对于多功能的I2CSLAVE器件的设计有一定的通用性;另一方面它支持各IP核模块工作于自己独立的时钟域,给多时钟域系统设计带来便利。以一款密码芯片为实例,对该结构进行了验证和实现,该芯片采用了华虹NEC0.35!mCMOS工艺。更多还原

【Abstract】 For its simple interface and integral protocol,I2C has become an international standard,which is widely used in consumer electronics,communication products and industrial products.This paper proposes a new structure of Slave device for I2C interface which is based on a two level bridge circuit.First,the structure has a flexibility to add or reduce IP core for different functions.So it can be widely used in the design of multi-function slave device for I2C interface.Second,the structure features that each IP core within the structure can work at its own clock frequency,and this is convenient to design of multi-clock domain system.The proposed structure has been demonstrated in a cipher IC,which is based on HHNEC 0.35um CMOS technology.更多还原