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I2C interface circuit, control method thereof and electronic equipment

A technology of interface circuits and electronic equipment, applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of unstable I2C bus signal state

Active Publication Date: 2021-11-12
HONOR DEVICE CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides an I2C interface circuit, its control method, and electronic equipment, which can solve the problem that the signal state of the I2C bus is unstable due to the breakage of the FPC when the pull-up resistor of the I2C bus is set on the side of the small board. To improve the stability of the electronic device processor system

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  • I2C interface circuit, control method thereof and electronic equipment
  • I2C interface circuit, control method thereof and electronic equipment
  • I2C interface circuit, control method thereof and electronic equipment

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Embodiment Construction

[0042] The following will describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them.

[0043] Hereinafter, the terms "first", "second", etc. are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0044] In addition, in this application, orientation terms such as "upper", "lower", "left", and "right" may include but not limited to be defined relative to the schematic placement orientations of components in the drawings. It should be understood tha...

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Abstract

The invention provides an I2C interface circuit, a control method thereof and electronic equipment, which can solve the problem of unstable signal state of an I2C bus caused by breakage of an FPCwhen a pull-up resistor of the I2C bus is arranged on a small board side, so as to improve the stability of a processor system of the electronic equipment. The I2C interface circuit comprises a flexible printed circuit board (FPC), an I2C pull-up resistor and a detection circuit. The FPC is used for coupling the I2C device to the communication interface. The I2C pull-up resistor is arranged on the small board, and the I2C pull-up resistor is in coupling connection with the communication interface through the FPC. The detection circuit is coupled with the communication interface, so that the processor detects a level signal of the communication interface and determines whether the small board is in place. When the processor determines that the small board is in place, the communication interface is configured to couple with the I2C controller to cause the I2C device to communicate with the I2C controller.

Description

technical field [0001] The present application relates to the technical field of electronic equipment, in particular to an I2C interface circuit, a control method thereof, and electronic equipment. Background technique [0002] At present, there are many inter-integrated circuit (I2C) devices in electronic devices, such as cameras and touch panels in notebook computers. According to the layout of devices or devices in the electronic device, the I2C device is generally arranged on a small board of the electronic device, and the I2C device communicates with the processor through the I2C bus. In order to ensure normal communication between the I2C device and the I2C controller in the processor, a pull-up resistor is provided on the I2C bus. Usually, the pull-up resistor is set on the motherboard side, such as figure 1 shown. [0003] As the number of devices in electronic equipment increases, the device layout will become denser. At this time, it may be necessary to set the ...

Claims

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Application Information

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IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/4068G06F13/4282G06F2213/0016
Inventor 李钊
Owner HONOR DEVICE CO LTD
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