Controller Area Network Controllers and Transceivers

By designing switchable transmitters and receivers in the CAN network nodes, and determining the encoding mode using mode detectors and pulse width thresholds, the problem of instability in signaling transmission in the CAN network is solved, and data transmission efficiency and stability are improved.

CN113225239BActive Publication Date: 2024-12-24NXP BV
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Patent Information

Application Number
CN202110045671.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-01-21
Filing Date
2021-01-13
Publication Date
2024-12-24
Estimated Expiration
2041-01-13

AI Technical Summary

Technical Problem

During data transmission, existing CAN network nodes are difficult to effectively switch and manage different encoding modes, resulting in unstable signaling transmission and inefficient efficiency.

Method used

A CAN transceiver is designed, including a transmitter and a receiver, capable of switching between a first transmit mode and a second transmit mode, determining whether the data is encoded using the first line code and determining based on the pulse width threshold value Operation mode to ensure reliable transmission of signaling.

Benefits of technology

It realizes reliable transmission of signaling in the CAN network, improves data transmission efficiency and stability, and can automatically adjust the transmission mode according to different encoding modes to adapt to the needs of different data characteristics.

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Abstract

A controller area network (CAN) transceiver is configured to be connected to a CAN bus, the CAN transceiver comprising: a transmitter device configured to transmit signaling on the CAN bus based on transmission data, the transmitter device being configured to operate in a first or second transmission mode, the first transmission mode being configured to transmit the signaling having a first attribute and the second transmission mode being configured to transmit the signaling having a second different attribute; a receiver device configured to receive signaling from the CAN bus; a receiving output, the receiving output being configured to provide the received data to the CAN controller; wherein the transmitter device is configured to operate in one of the first or second transmission modes based on determining that the transmission data is encoded using a first line code, otherwise operating in the other transmission modes, and wherein the transceiver comprises a decoder configured to decode the first line code of the transmission data.
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