CN101593138A - A kind of failure diagnosis card for main board of LPC interface - Google Patents
A kind of failure diagnosis card for main board of LPC interface Download PDFInfo
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- CN101593138A CN101593138A CNA2008100381192A CN200810038119A CN101593138A CN 101593138 A CN101593138 A CN 101593138A CN A2008100381192 A CNA2008100381192 A CN A2008100381192A CN 200810038119 A CN200810038119 A CN 200810038119A CN 101593138 A CN101593138 A CN 101593138A
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Abstract
The present invention relates to a kind of failure diagnosis card for main board of LPC interface, contain the contact pin interface of one 2 row's 5 row, an AK2001 chip, two seven segment numerical display tubes, 2 LED light; Mainly contain a diagnostic circuit; Wherein, the contact pin interface of one 2 row's 5 row connects mainboard, transmits the LPC signal; AK2001 chip is caught the information on the lpc bus, by decoding, drives two seven segment numerical display tubes; Two seven segment numerical display tube shows from lpc bus translates the code of coming out; Two LED light are distinguished display system 3.3V power supply and reset situation.Advantage of the present invention: on the basis that does not increase cost,, shorten the design cycle of back yard industry mainboard for the design of back yard industry mainboard provides a simple and easy but quite practical fault solution, and time of getting rid of of fault.
Description
[technical field]
The present invention relates to the computer motherboard field, specifically, the failure diagnosis card for main board of a kind of low pin count interface (Low PinCount Interface is called for short the LPC interface).
[background technology]
Failure diagnosis card for main board on the market adopts PCI more, PCI-E, or LPT interface.It is to need a corresponding connector on the mainboard that PCI and PCI-E interface have individual common characteristic, and shared PCB area is bigger.For small-sized industrial master board,, do not possess these interfaces because the space is limit.And the diagnostic card of LPT interface often can not normally use, and the interface area is also bigger owing to compatibility issue.These defectives have brought great difficulty for small-sized motherboard design debugging.Influence the construction cycle.
When the X86 of computer mainboard is started shooting, can carry out self check and initialization to major equipment, if certain key equipment goes wrong, BIOS will stop, system just can down not run yet, and display may not show, at this moment can't judge it is which key equipment is out of joint, bring difficulty to debugging, increased debug time.
[summary of the invention]
The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of failure diagnosis card for main board of LPC interface, can search the source of fault by the code that shows on the failure diagnosis card for main board.
The objective of the invention is to be achieved through the following technical solutions:
A kind of failure diagnosis card for main board of LPC interface contains the contact pin interface that one 2 row 5 is listed as, an AK2001 chip, two seven segment numerical display tubes, 2 LED light; Concrete diagnostic circuit is:
J2 is the contact pin of one 2 row's 5 row, links to each other with the lpc bus of mainboard by cable; LAD0, LAD1, LAD2, LAD3, FRAME-, PCI_CLK, PCI_RST-are the signal of lpc bus; U2 is AK2001, the 1st pin of J2 and the 2nd pin are the 3.3V power supply, the 10th pin is a ground connection, the 3rd pin of J2 is linked the 15th pin of U2, the 4th pin of J2 is linked the 16th pin of U2, the 5th pin of J2 is linked the 17th pin of U2, the 6th pin of J2 is linked the 18th pin of U2, and the 7th pin of J2 is linked on the 19th pin and 1K resistance R 2 of U2, the base stage of another termination triode Q1 of R2, the grounded emitter of Q1, collector is received on the 200 Ohmage R1, the negative electrode of the other end sending and receiving optical diode LED1 of R1, and the anode of LED1 is received on the 3.3V power supply, the 8th pin of J2 is linked the 13rd pin of U2, and the 9th pin of J2 is linked the 14th pin of U2; The 10th pin of U2 and the 20th pin are the 3.3V power supply, and the 2nd pin and the 12nd pin are ground connection; The 3rd pin of U2 is received the 3rd pin of two seven segment numerical display tube LED2, the 4th pin of U2 is received the 9th pin of LED2, the 5th pin of U2 is received the 8th pin of LED2, the 6th pin of U2 is received the 6th pin of LED2, the 7th pin of U2 is received the 7th pin of LED2, and the 8th pin of U2 is received the 4th pin of LED2, and the 9th pin of U2 is received the 1st pin of LED2, the 1st pin of U2 is received the 10th pin of LED2 by one 51 ohm resistance in series, and the 11st pin of U2 is received the 5th pin of LED2 by one 51 ohm resistance in series; The anode of LED 3 is received the 3.3V power supply, and negative electrode is by 200 ohm of resistance in series ground connection; Capacitor C 1 and C2 are used for the interference on the bypass 3.3V power supply;
Described LPC interface is the low pin count interface;
The contact pin interface of described one 2 row's 5 row connects mainboard, transmits the LPC signal;
A described AK2001 chip is caught the information on the lpc bus, by decoding, drives two seven segment numerical display tubes;
Described two seven segment numerical display tube shows from lpc bus translates the code of coming out;
Described two LED light are display system 3.3V power supply and reset situation respectively.
The good effect of the failure diagnosis card for main board of a kind of LPC interface of the present invention is:
The present invention for the design of back yard industry mainboard provides a simple and easy but quite practical fault solution, shortens the design cycle of back yard industry mainboard on the basis that does not increase cost, and time of getting rid of of fault.
[description of drawings]
Fig. 1 circuit block diagram of the present invention;
Fig. 2 circuit theory diagrams of the present invention.
[embodiment]
Below in conjunction with accompanying drawing the present invention is further detailed, but the embodiment that provided is provided.
Referring to accompanying drawing 1, a kind of failure diagnosis card for main board of LPC interface contains the contact pin interface that one 2 row 5 is listed as, an AK2001 chip, two seven segment numerical display tubes, 2 LED light; Wherein, the contact pin interface of one 2 row's 5 row connects mainboard, transmits the LPC signal; AK2001 chip is caught the information on the lpc bus, by decoding, drives two seven segment numerical display tubes; Two seven segment numerical display tube shows from lpc bus translates the code of coming out; Two LED light are distinguished display system 3.3V power supply and reset situation.Referring to accompanying drawing 2, the schematic diagram of diagnostic circuit of the present invention.
On mainboard, the LPC signal is received on the contact pin of 2 rows, 5 pins, the Pin1 of contact pin and Pin2 are received on the system power supply 3.3V, be used for providing power supply to diagnostic card, wide as far as possible when noting the PCB cabling, to pass through big electric current; Pin10 ground connection provides ground loop to diagnostic card.
Also with the contact pins of same 2 rows, 5 row, the LPC signal drawn from the pin of correspondence be connected on the decoding chip U2 (AK2001) on diagnostic card, with Pin1, draw with the line of broad on the 3.3V power supply of Pin2 and the ground of Pin10; Seven sections decoding of another termination lamp at U2.
After the system boot of computer, the 3.3V power supply at first occurs, and LED3 is lighted.Then system's PCIReset signal becomes high level from low level, and triode Q1 is opened, and LED1 is lighted thereupon.System begins to run code then, south bridge reads the initialization information of BIOS by LPC, diagnostic card just can be translated by the information that reads on the LPC, and on the information-driven to seven that decoding the is obtained section decoding lamp LED2, the user understands system operation situation by seeing the code on the LED2.
Claims (5)
1. the failure diagnosis card for main board of a LPC interface contains the contact pin interface that one 2 row 5 is listed as, an AK2001 chip, two seven segment numerical display tubes, 2 LED light; It is characterized in that concrete diagnostic circuit is: J2 is the contact pin of one 2 row's 5 row, links to each other with the lpc bus of mainboard by cable; LAD0, LAD1, LAD2, LAD3, FRAME-, PCI_CLK, PCI_RST-are the signal of lpc bus; U2 is AK2001, the 1st pin of J2 and the 2nd pin are the 3.3V power supply, the 10th pin is a ground connection, the 3rd pin of J2 is linked the 15th pin of U2, the 4th pin of J2 is linked the 16th pin of U2, the 5th pin of J2 is linked the 17th pin of U2, the 6th pin of J2 is linked the 18th pin of U2, and the 7th pin of J2 is linked on the 19th pin and 1K resistance R 2 of U2, the base stage of another termination triode Q1 of R2, the grounded emitter of Q1, collector is received on the 200 Ohmage R1, the negative electrode of the other end sending and receiving optical diode LED1 of R1, and the anode of LED1 is received on the 3.3V power supply, the 8th pin of J2 is linked the 13rd pin of U2, and the 9th pin of J2 is linked the 14th pin of U2; The 10th pin of U2 and the 20th pin are the 3.3V power supply, and the 2nd pin and the 12nd pin are ground connection; The 3rd pin of U2 is received the 3rd pin of two seven segment numerical display tube LED2, the 4th pin of U2 is received the 9th pin of LED2, the 5th pin of U2 is received the 8th pin of LED2, the 6th pin of U2 is received the 6th pin of LED2, the 7th pin of U2 is received the 7th pin of LED2, and the 8th pin of U2 is received the 4th pin of LED2, and the 9th pin of U2 is received the 1st pin of LED2, the 1st pin of U2 is received the 10th pin of LED2 by one 51 ohm resistance in series, and the 11st pin of U2 is received the 5th pin of LED2 by one 51 ohm resistance in series; The anode of LED 3 is received the 3.3V power supply, and negative electrode is by 200 ohm of resistance in series ground connection; Capacitor C 1 and C2 are used for the interference on the bypass 3.3V power supply;
Described LPC interface is the low pin count interface.
2. the failure diagnosis card for main board of a kind of LPC interface according to claim 1 is characterized in that, the contact pin interface of described one 2 row's 5 row connects mainboard, transmits the LPC signal.
3. the failure diagnosis card for main board of a kind of LPC interface according to claim 1 is characterized in that,
A described AK2001 chip is caught the information on the lpc bus, by decoding, drives two seven segment numerical display tubes.
4. the failure diagnosis card for main board of a kind of LPC interface according to claim 1 is characterized in that, described two seven segment numerical display tube shows from lpc bus translates the code of coming out.
5. the failure diagnosis card for main board of a kind of LPC interface according to claim 1 is characterized in that, described two LED light are display system 3.3V power supply and reset situation respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100381192A CN101593138A (en) | 2008-05-27 | 2008-05-27 | A kind of failure diagnosis card for main board of LPC interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100381192A CN101593138A (en) | 2008-05-27 | 2008-05-27 | A kind of failure diagnosis card for main board of LPC interface |
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| Publication Number | Publication Date |
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| CN101593138A true CN101593138A (en) | 2009-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100381192A Pending CN101593138A (en) | 2008-05-27 | 2008-05-27 | A kind of failure diagnosis card for main board of LPC interface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799505A (en) * | 2011-05-27 | 2012-11-28 | 神讯电脑(昆山)有限公司 | Connection structure for Debug card |
| CN104422793A (en) * | 2013-08-26 | 2015-03-18 | 鸿富锦精密工业(武汉)有限公司 | Fault diagnosis card |
| CN105446430A (en) * | 2015-12-28 | 2016-03-30 | 天津浩丞恒通科技有限公司 | Computer mainboard with fault diagnosis function and LPC interface mainboard fault diagnosis card |
| CN105589777A (en) * | 2015-12-28 | 2016-05-18 | 天津浩丞恒通科技有限公司 | Computer mainboard with failure diagnosis function and LPC interface mainboard failure diagnosis card |
| CN105912432A (en) * | 2016-04-05 | 2016-08-31 | 浪潮电子信息产业股份有限公司 | Failure detection method, device and system for server |
-
2008
- 2008-05-27 CN CNA2008100381192A patent/CN101593138A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799505A (en) * | 2011-05-27 | 2012-11-28 | 神讯电脑(昆山)有限公司 | Connection structure for Debug card |
| CN104422793A (en) * | 2013-08-26 | 2015-03-18 | 鸿富锦精密工业(武汉)有限公司 | Fault diagnosis card |
| CN105446430A (en) * | 2015-12-28 | 2016-03-30 | 天津浩丞恒通科技有限公司 | Computer mainboard with fault diagnosis function and LPC interface mainboard fault diagnosis card |
| CN105589777A (en) * | 2015-12-28 | 2016-05-18 | 天津浩丞恒通科技有限公司 | Computer mainboard with failure diagnosis function and LPC interface mainboard failure diagnosis card |
| CN105912432A (en) * | 2016-04-05 | 2016-08-31 | 浪潮电子信息产业股份有限公司 | Failure detection method, device and system for server |
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Open date: 20091202 |