CN210488542U - Control board before server based on I2C bus communication - Google Patents
Control board before server based on I2C bus communication Download PDFInfo
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- CN210488542U CN210488542U CN201921758931.2U CN201921758931U CN210488542U CN 210488542 U CN210488542 U CN 210488542U CN 201921758931 U CN201921758931 U CN 201921758931U CN 210488542 U CN210488542 U CN 210488542U
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Abstract
The utility model provides a control panel before server based on I2C bus communication, the utility model discloses an adopt PCA9555 analysis I2C information, preceding control panel mutual information carries out information transfer through I2C bus and mainboard, the complexity of reducible cable, reduce the wiring degree of difficulty, it can to light a lamp signal through I2C signal transmission, the management scheme is simpler, can manage the mutual information of preceding control panel through I2C circuit, PWR _ BTN scheme of lighting a lamp is more succinct, reduce the design degree of difficulty, reduce device use quantity, layout space has been reduced, the chip satisfies class B demand simultaneously, it is more extensive to use the scene, in addition PCA9555 chip low price, preceding control panel occupation space is littleer, overall cost can reduce.
Description
Technical Field
The utility model relates to a server technical field, especially a control panel before server based on I2C bus communication.
Background
With the development of the information industry, the internet and information have more and more important weight in the development of the modern society. Information transmission and storage can be an important resource in modern technological competition, and as people further increase the demand for information and data, servers for information and data processing are also facing to demand upgrade. The upgrading of the server includes many aspects, such as data processing speed, board stability, and the like. In order to improve the performance of the server, the server structure needs to be further innovated. At present, the design of a front control board of a server is excessively redundant, the most original single line is adopted to transmit a single signal, and a cable is used for signal transmission, so that the front control board has great defects in the aspects of price, stability and signal management, has poor expandability and cannot be reused to a greater extent.
In the present design scheme of the front control panel, signals are mainly acquired from a main board through cables, the front control panel generally comprises devices such as indicator lamps, PWR BUTTON, USB and VGA, signals of all the indicator lamps are directly acquired from the main board at present, and signal transmission is realized through the cables. The general front control board indicator lamps comprise a PSU _ FAULT indicator lamp, a LAN _ link indicator lamp, a MEMORY _ FAULT indicator lamp, a FAN _ FAULT indicator lamp, a SYSHOT _ FAULT indicator lamp and a SYS _ FAULT indicator lamp, so that six wires need to be reserved for signal transmission of the cable, the signals are low-speed signals, and the requirement on signal quality is relatively low.
However, when the scheme is adopted, each signal of the front control panel indicator light needs a corresponding signal line, the wiring in the server is disordered, and the wire arrangement is also disordered; the power indicator lamp adopts MOS and AUX electricity, CORE electricity cooperation, makes the front control panel whether when going up the electricity two kinds of states at CORE electricity, the pilot lamp shows amber and green respectively, and the design is comparatively complicated, need consider ESD protection etc. simultaneously, and occupation space is great on the board.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a control panel before server based on I2C bus communication aims at solving the complicated and loaded down with trivial details problem of management topology of preceding control panel design among the prior art, realizes reducing cable complexity and integrated circuit board design complexity, carries out signal management, unification management based on I2C bus simultaneously.
In order to achieve the technical purpose, the utility model provides a control panel before server based on I2C bus communication, preceding control panel includes:
I2C bus expansion chip, system status indicator light;
the I2C bus expansion chip is connected with the CPLD of the mainboard through an I2C cable, and is used for transmitting a PWR _ BTN signal to the CPLD, analyzing an I2C signal transmitted by the mainboard and transmitting a lighting signal to the system state indicator lamp;
the CPLD is also connected with the LCD module of the front control panel and the SENSOR module through an I2C cable.
Preferably, the system status indicator lamp comprises 6 indicator lamps, namely LAN _ link _ indicator lamp, PSU _ FAULT indicator lamp, MEMHOT _ LED indicator lamp, SYSHOT _ LED indicator lamp, FAN _ FAULT _ LED indicator lamp, SYS _ FAULT _ LED indicator lamp and PWR _ BTN indicator lamp.
Preferably, the I2C bus extension chip is PCA 9555.
Preferably, the I2C cable transmits a lighting signal, PWR _ BTN, SENSOR, and LCD signal.
Preferably, the front control board confirms whether the indicator light is amber or green according to the lighting signal sent by the main board and the CORE power on.
The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and one of the above technical solutions has the following advantages or advantageous effects:
compared with the prior art, the utility model discloses an adopt PCA9555 analysis I2C information, preceding control panel mutual information carries out information transfer through I2C bus and mainboard, the complexity of reducible cable, reduce the wiring degree of difficulty, it can to light a lamp the signal through I2C signal transmission, the management scheme is simpler, can manage the mutual information of preceding control panel through the I2C circuit, PWR _ BTN scheme of lighting a lamp is more succinct, reduce the design degree of difficulty, reduce device use quantity, the overall arrangement space has been reduced, the chip satisfies class B demand simultaneously, the application scene is more extensive, in addition PCA9555 chip low price, preceding control panel occupation space is littleer, overall cost can reduce.
Drawings
Fig. 1 is a schematic diagram of a front control board structure of a server based on I2C bus communication according to an embodiment of the present invention.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.
The following describes in detail a server front control board based on I2C bus communication according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a control panel before server based on I2C bus communication, preceding control panel includes:
I2C bus expansion chip, system status indicator light;
the I2C bus expansion chip is connected with the CPLD of the mainboard through an I2C cable, and is used for transmitting a PWR _ BTN signal to the CPLD, analyzing an I2C signal transmitted by the mainboard and transmitting a lighting signal to the system state indicator lamp;
the CPLD is also connected with the LCD module of the front control panel and the SENSOR module through an I2C cable.
An I2C bus expansion chip PCA9555 is selected on the front control panel and used for I2C signal analysis, signal light indication signals are transmitted through an I2C cable, meanwhile, information transmitted together with the signal light indication signals also comprises PWR _ BTN information and data information of LCD and SENSOR, and the information is transmitted through I2C through the same cable, so that management is facilitated.
The system status indicator lamp comprises 7 indicator lamps, namely a LAN _ LINKACT indicator lamp, a PSU _ FAULT indicator lamp, a MEMHOT _ LED indicator lamp, a SYSHOT _ LED indicator lamp, a FAN _ FAULT _ LED indicator lamp, a SYS _ FAULT _ LED indicator lamp and a PWR _ BTN indicator lamp.
The mainboard transmits information of 7 indicator lamps to the front control panel through a CPLD (complex programmable logic device) through an I2C cable, after a PWRBUTTON key of the front control panel is pressed down, a PWR _ BTN signal of the front control panel is transmitted to the mainboard CPLD through an I2C cable, the mainboard analyzes the PWR _ BTN signal and then sends a lighting signal of the PWR _ BTN indicator lamps, and whether the BTN indicator lamps are amber or green is determined according to whether CORE electricity is electrified.
The mainboard sends a lighting signal through an I2C cable, the front control board is provided with a PCA9555 chip to analyze the mainboard I2C signal, and the indicator lamp of the front control board is lighted.
The PWR _ BTN indicator lamp is complex in original design, needs a lighting scheme of commonly confirming P3V3, P3V3_ AUX and three MOS, adopts an analytic I2C signal lighting scheme, can reduce the complexity of design, and does not need to add an ESD device on a front control panel.
Additionally the utility model discloses in, LCD module and SENSOR module on the preceding control panel also are connected to the CPLD of mainboard through I2C cable to signal, PWR _ BTN, SENSOR and LCD signal adopt the transmission of the same I2C of the same way, and it is more convenient to manage, and the design is simpler.
The utility model discloses an adopt PCA9555 analysis I2C information, preceding control panel mutual information carries out information transfer through I2C bus and mainboard, the complexity of reducible cable, reduce the wiring degree of difficulty, it can to light a lamp the signal through I2C signal transmission, the management scheme is simpler, can manage the mutual information of preceding control panel through the I2C circuit, PWR _ BTN scheme of lighting a lamp is more succinct, reduce the design degree of difficulty, reduce the device use quantity, the overall arrangement space has been reduced, the chip satisfies class B demand simultaneously, it is more extensive to use the scene, in addition PCA9555 chip low price, preceding control panel occupation space is littleer, the overall cost can reduce.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A front control board of a server based on I2C bus communication, the front control board comprising:
I2C bus expansion chip, system status indicator light;
the I2C bus expansion chip is connected with the CPLD of the mainboard through an I2C cable, and is used for transmitting a PWR _ BTN signal to the CPLD, analyzing an I2C signal transmitted by the mainboard and transmitting a lighting signal to the system state indicator lamp;
the CPLD is also connected with the LCD module of the front control panel and the SENSOR module through an I2C cable.
2. The I2C bus communication-based server front control board of claim 1, wherein the system status indicator lights include 6 indicator lights, LAN _ link, PSU _ FAULT, MEMHOT _ LED, SYSHOT _ LED, FAN _ FAULT _ LED, SYS _ FAULT _ LED and PWR _ BTN, respectively.
3. The front control board of a server based on I2C bus communication of claim 1, wherein the I2C bus expansion chip is PCA 9555.
4. The I2C bus communication-based front control board of server as claimed in claim 1, wherein the I2C cable transmits lighting signal, PWR _ BTN, SENSOR and LCD signal.
5. The server front control board based on I2C bus communication of claim 1, wherein the front control board confirms that the indicator light is amber or green according to the lighting signal sent by the main board and whether the CORE power is on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758931.2U CN210488542U (en) | 2019-10-18 | 2019-10-18 | Control board before server based on I2C bus communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758931.2U CN210488542U (en) | 2019-10-18 | 2019-10-18 | Control board before server based on I2C bus communication |
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| CN210488542U true CN210488542U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000602A (en) * | 2020-08-31 | 2020-11-27 | 北京计算机技术及应用研究所 | Method for expanding IO port of CPLD device |
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2019
- 2019-10-18 CN CN201921758931.2U patent/CN210488542U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112000602A (en) * | 2020-08-31 | 2020-11-27 | 北京计算机技术及应用研究所 | Method for expanding IO port of CPLD device |
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