车辆用单线CAN网络

[中文适用范围]： 本 SAE 推荐实践定义了用于数据通信的 OSI 模型的物理层和数据链路层部分。特别是，本文件规定了任何载波侦听多路访问/冲突解决（CSMA/CR）数据链路的物理层要求，该数据链路在单线介质上运行以在道路车辆的电子控制单元（ECU）之间进行通信。本文档中规定的要求将提供所有兼容 ECU 和介质设计时应达到的最低标准性能水平。这将确保所有连接设备之间的完整串行数据通信，无论供应商如何。本文档由特定车辆 OEM 组件技术规范引用，该规范描述了单线数据链路控制器和物理层接口所在的任何给定 ECU。本文档主要规定了物理层的性能。组件技术规范中提供的 ECU 环境和其他要求应取代本文件的要求。目标受众包括但不限于ECU供应商、CAN控制器供应商、CAN收发器供应商、组件发布工程师和车辆系统工程师。 [外文原描述]： This SAE Recommended Practice defines the Physical Layer and portions of the Data Link Layer of the OSI model for data communications. In particular, this document specifies the physical layer requirements for any Carrier Sense Multiple Access/Collision Resolution (CSMA/CR) data link which operates on a single wire medium to communicate among Electronic Control Units (ECU) on road vehicles.Requirements stated in this document will provide a minimum standard level of performance to which all compatible ECUs and media shall be designed. This will assure full serial data communication among all connected devices regardless of supplier.This document is to be referenced by the particular vehicle OEM Component Technical Specification which describes any given ECU in which the single wire data link controller and physical layer interface is located. Primarily, the performance of the physical layer is specified in this document. ECU environmental and other requirements when provided in the Component Technical Specification, shall supercede the requirements of this document.The intended audience includes, but is not limited to, ECU suppliers, CAN controller suppliers, CAN transceiver suppliers, component release engineers, and vehicle system engineers.Cross Reference: 970295,ISO7498,ISO7637,J1113,J1213-1,J1930_201703,J2284,J551