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Communication interface circuit and communication method

A technology of communication interface circuit and communication method, which is applied in the field of communication interface circuit and communication, can solve problems such as communication signal instability, and achieve the effects of ensuring stability, reducing interference, and ensuring communication signals

Inactive Publication Date: 2018-06-29
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a communication interface circuit and a communication method to at least solve the technical problem that the main control chip in the prior art is connected through a connector, resulting in unstable communication signals

Method used

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  • Communication interface circuit and communication method
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  • Communication interface circuit and communication method

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Embodiment Construction

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a communication interface circuit and a communication method. The communication interface circuit comprises a master control chip and a connector, wherein the master control chip comprises a communication interface; the connector is connected with the communication interface through a parallel bus; and part of or all signal wires in the parallel bus are provided with pull-up circuits. The technical problems that master control chips in the prior art are connected through a connector to cause unstable communication signals is solved.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a communication interface circuit and a communication method. Background technique [0002] The high-speed communication signals between two MCU (main control chip) chips often use parallel buses for communication, including parallel address buses, parallel data buses, and parallel control buses. The address, data, and control buses between them will be connected through pin headers. In the existing circuit, a resistor is generally connected in series between the high-speed bus interface of the MCU and the pin header to limit the current to prevent excessive current from damaging the MCU chip. However, the parasitic inductance of the line is relatively Large, the communication frequency is very high, it is easy to cause interference, and the communication signal will be unstable during signal transmission, affecting the high-speed bus signal communication between the two MCUs, causing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/4068G06F13/4204G06F2213/0004
Inventor 谭建明胡余生贾卫东刘亚祥樊柳芝罗达智经琦谭章德
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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