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Anti-interference circuit for data bus

A data bus and circuit technology, applied in the field of signal processing, can solve the problems of many interference signals and poor signal stability of the I2C bus, and achieve the effects of reliable long-distance transmission, improved anti-interference performance, and shortened falling edge time

Pending Publication Date: 2021-06-18
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The I2C bus signal is subject to many interference signals, and the stability of the I2C bus signal is poor

Method used

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  • Anti-interference circuit for data bus
  • Anti-interference circuit for data bus
  • Anti-interference circuit for data bus

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Embodiment Construction

[0016] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0017] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0018] figure 1 A schematic structural diagram of an anti-jamming circuit for the data bus 10 provided in an exemplary embodiment of the present application. Such as figure 1 As...

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Abstract

The embodiment of the invention provides an anti-interference circuit for a data bus. In the embodiment of the invention, when the bus signal enters the falling edge stage, the falling edge drive circuit is used for driving the falling edge of the bus signal, so that the voltage of the bus signal is quickly reduced to a stable voltage value, the voltage of the bus signal is stabilized as soon as possible, and the falling edge time is shortened. Meanwhile, when the bus signal enters the rising edge stage, the rising edge drive circuit is used for driving the rising edge of the bus signal, so that the voltage of the bus signal quickly rises to a stable voltage value, the voltage of the bus signal is stabilized as soon as possible, and the rising edge time is shortened. Therefore, the anti-interference performance of the bus signal is improved, and reliable communication of long-distance transmission of the data bus is realized.

Description

technical field [0001] The present application relates to the technical field of signal processing, in particular to an anti-jamming circuit for a data bus. Background technique [0002] At present, the I2C (Inter Integrated Circuit, two-wire serial bus) bus is used in various long-distance transmission communications, and the rising edge time and falling edge time of the I2C bus signal are proportional to the length of the I2C bus cable. At present, when long-distance communication is transmitted, the rising edge time and falling edge time of the I2C bus signal are too long. Among them, the rising edge time of the I2C bus signal is too long, that is, it takes a long time for the voltage of the I2C bus signal to change from low level to high level and stabilize to the high voltage, and the falling edge time of the I2C bus signal is too long, that is, the I2C bus It takes a long time for the voltage of the signal to change from high level to low level and stabilize to the lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/12H03K5/135
CPCH03K5/12H03K5/135
Inventor 陈培辉
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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