Device and method for operating multiple I2C sub device in communication equipment

A technology of communication equipment and devices, which is applied in the field of operating multiple I2C slave devices, which can solve the problems of unable to realize I2C slave device operation and many hardware devices, and achieve the effect of fast speed and low hardware cost
CN1581026AInactive Publication Date: 2005-02-16GLOBAL INNOVATION AGGREGATORS LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GLOBAL INNOVATION AGGREGATORS LLC
Publication Date
2005-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a device capable of operating several 12C slave devices in the communication equipment and its method. Said device includes CPU and logical device connected with CPU bus, and the serial clock lines of 12C interface of every slave device are connected with same clock line pin of the logical device, and the serial data lines of 12C interface of every slave device are respectively connected with different data line pins correspondent to the logical device. Said logical device interior includes a clock register whose output end is connected to the clock line pin of described logical device and several data registers, and between the output end of every data register and data line pin an electronic switch is set. Said invention also provides its operation method and its concrete steps.
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Description

technical field

[0001] The invention relates to the field of computer network communication, in particular to a method for operating multiple I2C slave devices in computer network communication equipment. Background technique

[0002] In computer network communication equipment, more and more devices with I2C bus (INTER-IC BUS or IC TO BUS) interface are used. The I2C bus interface has the advantages of less signal lines and convenient operation. The general method of operating I2C relies on different device addresses to distinguish devices, and each device on the I2C bus has a unique device address. Some device addresses are configured by their own external hardware, while some device addresses are solidified inside the chip by the manufacturer and cannot be configured. In practical applications, multiple non-configurable I2C slave devices with the same device address will be used. For example, the I2C slave device address of the Small Form-Factor Pluggable (SFP, SmallFor...

Claims

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