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Apparatus for sharing I2C host by multiple same I2C address devices

A multiplexer and address technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of human error, inconvenient engineering operations, and reduce assembly production efficiency, so as to improve production efficiency, reduce design difficulty, and improve assembly. The effect of craftsmanship

Active Publication Date: 2018-02-16
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

Although this avoids the appearance of devices with the same I2C address on the same I2C bus, it also brings inconvenience to the engineering operation. Every time it is necessary to manually adjust the configuration of the jumper cap to adjust the I2C address, it is also prone to human error and reduces assembly. Productivity

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  • Apparatus for sharing I2C host by multiple same I2C address devices

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0020] The device provided by this embodiment for sharing one I2C host by multiple devices with the same I2C address includes: a main board, at least two identical backplanes, and at least two connectors. The connectors correspond to the backplane, and their number is the same as the number of the backplane.

[0021] Such as figure 1 As shown, the motherboard is provided with a BMC chip U2 and a multiplexer U1, the input end of the multiplexer U1 is connected to the BMC chip U2, the output end of the multiplexer U1 is connected to each connector, and each connection connected to a backplane.

[0022] In order to realize the control of the multiplexer U1 by the BMC chip U2, GPIO configuration information i...

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Abstract

The invention discloses an apparatus for sharing an I2C host by multiple same I2C address devices. The apparatus comprises a mainboard, at least two same backboards and at least two connectors; the number of the connectors is the same as that of the backboards; a BMC chip and a multiplexer are arranged on the mainboard; the input end of the multiplexer is connected with the BMC chip; the output end of the multiplexer is connected with the connectors; each connector is connected with one backboard; and GPIO configuration information is arranged in FW of the BMC chip. According to the apparatus,the design difficulty of the backboards is lowered; the production assembly process of a production line is improved; and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of I2C equipment, in particular to a device in which multiple devices with the same I2C address share one I2C host. Background technique [0002] In a general-purpose server, there are many configurations where one mainboard is matched with multiple identical or different backplanes. The temperature of the backplane and the information of the hard disk are transmitted to the BMC of the mainboard through the I2C protocol. In the backplane, there are generally two devices on the I2C bus, one is a thermal sensor that records the temperature information of the backplane, and the other is a CPLD that records information about the hard disk. These two devices are on the same I2C bus, and their I2C addresses are different. If two or more identical backplanes are used in a complete machine, and the main board only provides one I2C host to communicate with several backplanes at the same time, it will cause several identical I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/38
CPCG06F13/387G06F2213/0016
Inventor 彭俊华
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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