Control bus circuit capable of automatically adjusting hard disk lamp on hard disk backplane

A hard disk backplane, automatic adjustment technology, applied in hardware monitoring, electrical digital data processing, instruments, etc., can solve problems such as inability to apply the main chip, and achieve the effect of increasing applicability
CN109062831AInactive Publication Date: 2018-12-21ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
Publication Date
2018-12-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The embodiment of the invention discloses a control bus circuit capable of automatically adjusting a hard disk lamp on a hard disk backplane, which comprises a main chip, a connector and a hard disk backplane. The main chip is connected with the sideband signal Pin pin of the connector through a GPIO Pin for detecting the signal of the connector. The GPIO Pin of the main chip is also connected with a power supply through a resistor; A main chip is connected with an I2C bus, an SGPIO bus, and one end of that I2C bus and the SGPIO bus is connected with a connector bus signal pin through a multiplex signal pin; The hard disk backplane is provided with a bus selection circuit connected with the connector sideband signal Pin and a bus signal management chip connected with the connector bus signal pin. The bus signal management chip is connected with the hard disk lamp. The main chip is configured to select the I2C bus or SGPIO bus to communicate with the hard disk backplane according to thelevel of the bus selection circuit. The embodiment of the invention can not only increase the applicability of the SAS and RAID cards, but also increase the applicability of the hard disk backplane.
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Description

technical field

[0001] The invention relates to the field of server motherboard circuit design. Background technique

[0002] SAS card and RAID card are commonly used in servers, storage and other products. These cards are generally used with hard disk backplanes to expand multiple hard disks. The hard disk light on the hard disk backplane is generally controlled by the main chip on the SAS card or RAID card. With the upgrading of board technology, there are more and more types of main chips. Different SAS cards and RAID cards have different buses for controlling hard disk lights. Some boards are designed for SGPIO bus control, and some boards are designed for I2C bus control.

[0003] Existing server backplanes generally have two designs, either designed as SGPIO bus to control the hard disk indicator light, or designed as I2C bus to control the hard disk indicator light. In the existing technology, once the design of the backplane is completed, there will be restrictions...

Claims

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