摘要
在CAN规范中,位定时和同步机制是既重要又难于理解的环节之一,它不仅关系到对规范其他相关内容的理解,甚至能对节点开发的成功与否产生直接的影响。因此介绍了位时间(周期)的组成与结构,总结并归纳位定时的作用;在此基础上,给出硬同步和重同步的定义,重点分析硬同步和重同步的机理,并给出它们相应的图解,形象而又清晰地表明其本质;以独立CAN控制器为例,详细说明在一般开发和工程实际中,位定时参数设置和计算的一般方法及步骤。
In the CANbus norm,bit time and synchronous mechanism is one of the link that is important and difficult to understand,it not only relates to norm the comprehension of other related content, even to influence direct the success or a case of crabs of node development. The constitute and structure of the bit time（period） is introduced, the function of bit time is tallied up and induced. The definition of hard and repetition synchronous is presented on the foundation,the mechanism of hard and repetition synchronous is analyzed,the correspondence diagram is presented, the hypostases is indicated vividly and clear. As an example with independent CANbus controller,the general method and step of bit time are elaborated in the general development and the engineering practice.
出处
《现代电子技术》
2009年第12期142-145,共4页
Modern Electronics Technique
关键词
位定时
硬同步
重同步
参数
bit time
hard synchronous
repetition synchronous
parameter
