CAN总线智能节点设计硬件选型问题的探讨

Discussion on the Hardware Design Solutions for Intelligent Node Based on CAN Bus

在简要介绍CAN协议主要性能的基础上,围绕CAN节点硬件设计的器件选型问题,详细描述当前国内流行的CAN收发器、CAN独立控制器和内置CAN控制器的嵌入式微控制器。对采用CAN独立控制器和直接使用内置CAN控制器的微处理器硬件设计方案进行简单的比较。并提出内置CAN控制器的微处理器硬件设计方案将成为CAN智能节点设计的首选方案。

Firstly, the paper briefly introduced the main performance of the CAN protocol. According to the selection of hardware design for CAN bus node, it described in detail the characteristics of some popular chips at present in the national market, including the CAN transceivers, the stand-alone CAN controllers, and the embedded microcontrollers with integrated CAN. And it compared the hardware design solutions based on the stand-alone CAN controller and the microcontroller with integrated CAN bus. Finally, it indicated that the design solution based on microcontrollers with integrated CAN will be the best selection for the design of intelligent CAN bus node.