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Can bus node chip including transceiver and controller

A CAN bus and controller technology, applied in the field of CAN bus node chips, can solve the problems of inconvenient use of chips, and achieve the effect of simplifying use and improving stability

Active Publication Date: 2019-08-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the CAN transceivers and CAN controllers on the market are discrete designs and are not integrated together, which brings inconvenience to the use of the chip.

Method used

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  • Can bus node chip including transceiver and controller
  • Can bus node chip including transceiver and controller
  • Can bus node chip including transceiver and controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The invention provides a CAN bus node chip which integrates a CAN transceiver and a CAN controller.

[0021] The present invention integrates the CAN transceiver and the CAN controller into the same chip, and the overall structural block diagram of the chip is as follows figure 1 shown. It can be divided into two modules: bus receiving / sending module and bus protocol controller. The transceiver module includes a sending part and a receiving part, and the controller module includes functional modules such as internal registers to implement the bus protocol.

[0022] The structure diagram of the CAN bus transceiver module is as follows: figure 2 As shown, it mainly includes the sending part and the receiving part. The sending part is composed of a drive control module, a switch MOS tube, and a voltage dividing resistor, and the receiving part is a hysteresis comparator. Resistor R5 in the figure is the equivalent resistance of the bus (generally 60Ω). In order to ens...

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PUM

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Abstract

The invention belongs to the field of CAN onsite buses. A CAN bus transceiver and a CAN bus controller are integrated in the same chip, the chip is miniaturized, use of the CAN bus chip is simplified, and the integrated degree and the reliability of a CAN onsite bus system are improved. A CAN bus node chip including the transceiver and the controller is composed of a bus transceiver module and a CAN bus controller module; the CAN bus controller module is composed of an internal dwell vessel, an interface management logic unit, a bit flow processor, an acceptance filter, a bit time sequence logic unit and a data buffer; the bus transceiver module comprises a sending part and a reception part; the sending part is composed of two driving control modules a NOT gate, two switch MOS tubes and a divider resistor; and the reception part is formed by a retardation comparator. The CAN bus node chip including the transceiver and the controller is mainly applied to design and manufacture occasions of a CAN onsite bus device.

Description

technical field [0001] The invention relates to the field of CAN field bus, in particular to a CAN bus node chip including a CAN controller and a CAN transceiver, which effectively improves the integration and reliability of the CAN bus system. Background technique [0002] With the development of computer network technology and chip technology, the performance of the control chip in the network system has been greatly improved, and the cost has been continuously reduced. The control network represented by the field bus also plays an indispensable role in industrial and other control systems. Fieldbus is a digital communication system that is applied in the field and realizes two-way, serial, and multi-point communication between measurement and control equipment. It puts a general-purpose or special-purpose microprocessor into the traditional measurement and control instrument, so that it has digital calculation and digital communication capabilities. It uses a certain med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40
Inventor 赵毅强解啸天束庆冉朱世贤
Owner TIANJIN UNIV
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