一种带DMA功能的I/O可配置I^(2)C总线接口的设计  

A design of I/O configurable I^(2)C bus interface with DMA function

作　　者：强小燕 王嘉瑶 邢梦菲 Qiang Xiaoyan;Wang Jiayao;Xing Mengfei(The 58th Research Institute of China Electronics Technology Corporation,Wuxi 214072,China;Hangzhou Research Institute of Xidian University,Hangzhou 311231,China)

机构地区：[1]中国电子科技集团公司第五十八研究所,江苏无锡214072 [2]西安电子科技大学杭州研究院,浙江杭州311231

出　　处：《电子技术应用》2023年第11期69-72,共4页Application of Electronic Technique

摘　　要：为了利用DMA可以快速移动数据,不需要CPU任何操作来减轻MCU的工作量,并使得接口模块的每个引脚可以根据需求编程为I^(2)C引脚或通用输入输出引脚,介绍了一种带DMA功能的I/O可配置I2C总线接口设计。对I^(2)C总线的基本原理、I^(2)C模块总体结构、DMA功能和I/O可配置功能的设计实现进行了介绍。对该接口设计进行了功能仿真,分析表明实现了I^(2)C接口DMA功能和I/O可配置功能两种模式下的数据传输,完全满足设计要求。In order to make use of DMA to move data quickly,no CPU operation is required to reduce the workload of MCU,and each pin of the interface module can be programmed as I^(2)C pin or universal I/O pin according to the demand,this paper intro‐duces an I/O configurable I^(2)C bus interface design with DMA function.The basic principle of I^(2)C bus,the overall structure of I^(2)C module,the design and implementation of DMA function and I/O configurable function are introduced.The function simulation of the interface design shows that the data transmission under the two modes of DMA function and I/O configurable function of I2C interface is realized,which fully meets the design requirements.

关 键 词：I^(2)C总线 DMA功能 I/O可配置 接口设计 

分 类 号：TN402[电子电信—微电子学与固体电子学]