SoC chip (System on Chip) is an integrated circuit that integrates a whole set of electronic system functions into one chip, including processor core, memory, interface circuit DSEK60-02A Sensors and other hardware modules. SoC chips are usually widely used in smart phones, tablet computers, Internet of Things devices, embedded systems and other fields, with the characteristics of small footprint, low power consumption, and high performance.
CAN bus (Controller Area Network) is a serial communication protocol, originally developed by Bosch, a German company, for automobile network communication. CAN bus is widely used in automotive electronic systems, industrial control systems, ships, trains and other fields. CAN bus has the characteristics of high reliability, strong anti-interference ability and good real-time performance.
The SoC chip integrates the CAN controller to realize the CAN bus communication function. In the SoC chip, the CAN controller is responsible for managing the sending and receiving of CAN data frames, and communicating with other devices through the CAN bus. The basic knowledge of CAN bus includes the following aspects:
1. Basic principle of CAN bus: CAN bus adopts master-slave mode for communication, which has excellent anti-interference performance and can ensure reliable data transmission in multi node communication.
2. CAN bus frame format: CAN bus data frame includes standard frame and extended frame, including identifier, data field, CRC check code and other information.
3. CAN bus rate: CAN bus supports different communication rates, including 1Mbps 500kbps 、 250kbps The selection of rate depends on the communication distance and the required data transmission speed.
4. CAN bus protocol: CAN bus follows specific communication protocol, including data frame sending, error handling, arbitration mechanism and other provisions, to ensure the cooperation between multiple nodes.
5. Realization of CAN bus in SoC chip: SoC chip integrates CAN controller module, and developers can control CAN bus through programming interface to realize data transmission and reception.
In general, the CAN bus module in the SoC chip is an important part of realizing communication between devices. By deeply understanding the basic knowledge of CAN bus, developers can better design and apply the CAN communication function in the SoC chip.
