Communication method, communication control device and I2C bus system

A communication method and bus system technology, applied in the field of bus communication, can solve the problems of limited application scenarios and low efficiency of slave address modification, and achieve the effect of expanding application scenarios and high efficiency

Active Publication Date: 2020-08-18
北京中科银河芯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of the number of pins and pin spacing in the traditional method, the modification e

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  • Communication method, communication control device and I2C bus system
  • Communication method, communication control device and I2C bus system
  • Communication method, communication control device and I2C bus system

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[0035] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first threshold and the second threshold are only for distinguishing different thresholds, and the sequence of them is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference.

[0036] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions....

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Abstract

The invention discloses a communication method, a communication control device and an I2C bus system, relates to the technical field of bus communication, and aims to solve the problems of low slave address modification efficiency and limited application scenarios caused by multiple slave address pins. The communication method comprises the following steps: a slave receives an addressing code sentby a host; the slave responds to the addressing code, and under the condition that the type of the reference pin electrically connected with each address pin is determined, the lower 2m bits of the slave machine address code are configured according to the types of the reference pins electrically connected with the m address pins; and a link signal is sent to the host according to the low 2m bitsof the addressing code and the low 2m bits of the slave address code. And the host is used for determining whether to establish communication with the slave according to the link signal. The communication control device comprises the communication method provided by the technical scheme. The communication method provided by the invention is used for reducing the number of slave address pins, improving the modification efficiency of the slave address and increasing the application scenarios of the slave address.

Description

technical field [0001] The invention relates to the technical field of bus communication, in particular to a communication method, a communication control device and an I2C bus system. Background technique [0002] The I2C bus is the abbreviation of Inter-Integrated Circuit, pronounced "eye-squared cee" or "eye-two-cee", it is a two-way, two-wire, serial and multi-master interface standard, with a bus arbitration mechanism, suitable for Short-range, infrequent data communication between devices. In the standard I2C bus protocol, the physical layer is composed of two bidirectional serial lines, including the data line SDA and the clock line SCL. Usually the I2C communication system consists of a host and single or multiple slaves. Each slave generally has a unique address, which can be used to communicate between the slave and the master. [0003] In the traditional method, the address of each slave is determined by its address pin, and corresponds to the addressing code s...

Claims

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Application Information

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IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/404G06F13/4282
Inventor 蒋磊于泽洋
Owner 北京中科银河芯科技有限公司
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