一种智能CAN总线接口设计  

Design of an Intelligent CAN Bus Interface

作　　者：汤艳飞 文敏华 TANG Yan-fei;WEN Min-hua(Xi′an Aeronautics Computing Technique Research Institute,AVIC,Xi′an 710068,China)

机构地区：[1]航空工业西安航空计算技术研究所,陕西西安710068

出　　处：《航空计算技术》2021年第2期112-115,119,共5页Aeronautical Computing Technique

基　　金：航空科学基金项目资助(2016ZC31005)。

摘　　要：描述了一种智能CAN总线接口板卡的设计方案。从芯片的选型、系统结构、原理设计、底层实现、软件设计等方面介绍了设计方案。采用本地端智能控制CAN总线传输的方法,将数据协议传输层的控制放在本地,能够有效降低CPU的资源占有率,提高整个系统的性能,具有体积小、功耗低的特点,接口满足CAN2.0B协议要求,既能适应系统恶劣的工作环境,又进一步降低了系统的体积、功耗和系统成本。This paper describes the design of an intelligent CAN bus interface card.In terms of the chip selection,system structure,principle design,bottom layer implementation,software design and other aspects,the implementation of this design is introduced in detail.The scheme adopts the method of local intelligent control CAN bus transmission,and puts the control of data protocol transmission layer locally,which can effectively reduce the resource occupancy rate of CPU and improve the performance of the whole system.It has the characteristics of small size and low power consumption.The interface meets the requirements of CAN2.0B protocol,which can not only meet the requirements of the bad working environment of the system,but also further reduce the volume and power of the system Consumption and system cost.

关 键 词：CAN总线 MCU控制器 SPI串行接口 DUART 数字电路设计 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]