10.1 Overview

ISO 11898 family of standards are the international standard for high speed serial communication using the controller area network (CAN) bus protocol and physical layers (transceivers). It supports multimaster operation, real time control, programmable data rates up to 1 Mbps, and powerful redundant error checking procedures that provide reliable data transmission. It is suited for networking intelligent devices as well as sensors and actuators within the rugged electrical environment of a machine chassis or factory floor. The SN65HVD23x family of 3.3 V CAN transceivers implement the lowest layers of the ISO/OSI reference model, the ISO11898-2 standard. This is the interface with the physical signaling output of the CAN controller of the Texas Instruments µPs, MCUs and DSPs, such as TMS320Lx240x 3.3 V DSPs, as illustrated in Figure 28.

Figure 28. Layered ISO 11898 Standard Architecture