BS ISO 11898-1:2015规定了建立数字信息交换的特点 在实现CAN数据链路层的模块之间。控制器局域网是一种串行网络 通信协议，支持分布式实时控制和多路复用，用于 道路车辆和其他控制应用。ISO 11898的这一部分规定了经典的CAN帧格式和新引入的CAN灵活格式 数据速率帧格式。经典的CAN帧格式允许高达1 Mbit/s的比特率和有效负载 每帧最多8字节。灵活的数据速率帧格式允许比特率高于1 Mbit/s，并且 每帧超过8字节的有效负载。ISO 11898的这一部分从分层的角度描述了CAN的总体架构 根据ISO/IEC 7498开放系统互连（OSI）的ISO参考模型- 1.CAN数据链路层根据ISO/IEC 8802-2和ISO/IEC 8802-3规定。ISO 11898的本部分包含以下详细规范（见图2）: 逻辑链路控制子层；媒体访问控制子层；物理编码子层。有三种实施方案。它们是:只支持经典的CAN帧格式，不允许灵活的数据速率帧格式；支持经典CAN帧格式，允许灵活的数据速率帧格式；支持经典的CAN帧格式和灵活的数据速率帧格式。建议对新设计实施最后一个选项。注意:第一个选项的实现只能与第三个选项的实现通信 只要不使用灵活的数据速率帧格式；否则，将生成错误帧。有 使用灵活的数据速率框架在CAN网络中运行第一个选项实施的机会 格式，但这些不在ISO 11898本部分的范围内。交叉引用:ISO/IEC 7498-1ISO/IEC/IEEE 8802-3:2014 ISO 7637-3ISO 11992-1ISO/IEC 8802- 2ISO/IEC 8802-2:1998/Cor 1:2000购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 11898-1:2015 specifies the characteristics of setting up an interchange of digital information between modules implementing the CAN data link layer. Controller area network is a serial communication protocol, which supports distributed real-time control and multiplexing for use within road vehicles and other control applications.This part of ISO 11898 specifies the Classical CAN frame format and the newly introduced CAN Flexible Data Rate Frame format. The Classical CAN frame format allows bit rates up to 1 Mbit/s and payloads up to 8 byte per frame. The Flexible Data Rate frame format allows bit rates higher than 1 Mbit/s and payloads longer than 8 byte per frame.This part of ISO 11898 describes the general architecture of CAN in terms of hierarchical layers according to the ISO reference model for open systems interconnection (OSI) according to ISO/IEC 7498- 1. The CAN data link layer is specified according to ISO/IEC 8802-2 and ISO/IEC 8802-3.This part of ISO 11898 contains detailed specifications of the following (see Figure 2):logical link control sub-layer;medium access control sub-layer;physical coding sub-layer.There are three implementation options. They are the following:support of the Classical CAN frame format only, not tolerating the Flexible Data Rate frame format;support of the Classical CAN frame format and tolerating the Flexible Data Rate frame format;support of the Classical CAN frame format and the Flexible Data Rate frame format.The last option is recommended to be implemented for new designs.NOTE Implementations of the first option can communicate with implementations of the third option only as long as the Flexible Data Rate frame format is not used; otherwise, Error Frames are generated. There are opportunities to run implementations of the first option also in CAN networks using the Flexible Data Rate frame format, but these are not in the scope of this part of ISO 11898.Cross References:ISO/IEC 7498-1ISO/IEC/IEEE 8802-3:2014ISO 7637-3ISO 11992-1ISO/IEC 8802-2ISO/IEC 8802-2:1998/Cor 1:2000All current amendments available at time of purchase are included with the purchase of this document.