TW201042438A - Motherboard of computer and power supply control circuit thereof - Google Patents

Motherboard of computer and power supply control circuit thereof Download PDF

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Publication number
TW201042438A
TW201042438A TW98116343A TW98116343A TW201042438A TW 201042438 A TW201042438 A TW 201042438A TW 98116343 A TW98116343 A TW 98116343A TW 98116343 A TW98116343 A TW 98116343A TW 201042438 A TW201042438 A TW 201042438A
Authority
TW
Taiwan
Prior art keywords
power
cpu
processing module
display
switch
Prior art date
Application number
TW98116343A
Other languages
Chinese (zh)
Inventor
Yi Rui
Xiu-Dong Lu
Jing-Li Xia
Original Assignee
Hon Hai Prec Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hon Hai Prec Ind Co Ltd filed Critical Hon Hai Prec Ind Co Ltd
Priority to TW98116343A priority Critical patent/TW201042438A/en
Publication of TW201042438A publication Critical patent/TW201042438A/en

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Abstract

A motherboard of a computer includes a platform controller, a CPU with a display processing module, a power supply generating module, first and second electronic switches. The platform controller is connected to a display and the display processing module. The display processing module is also connected to the power supply generating module. The CPU is connected to a graphic card. The graphic card is also connected to the display. A first terminal of the first electronic switch is connected to a first power supply via a first resistor, a second terminal of the first electronic switch is grounded, and a third terminal of the first electronic switch is connected to the power supply generating module and a first terminal of the second electronic switch via a second resistor. A second terminal of the second electronic switch is grounded, and a third terminal of the second electronic switch is connected to the power supply generating module and the graphic card, and is also connected to a second power supply via a third resistor.

Description

201042438 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a computer motherboard and a display processing module for a CPU (Central Processing Unit) on a computer motherboard Control circuit. [Prior Art] [0002] The computer display can be divided into an integrated display and an independent display. The computer with integrated display function has low power consumption and low power consumption, but the display performance is low. Computers with independent display functions generally use a separate graphics card, which consumes a lot of power and consumes power, but has high display performance. For a computer with a CPU with integrated display function, when the computer needs to perform the integrated display function, it needs to add an additional power generation module to supply power to the CPU's display processing module to enable the CPU to process the displayed data and display the processed display. The data is transmitted to the display processing module of the CPU to realize the integrated display of the computer. [0003] When a computer with a CPU with an integrated display function installs a separate graphics card, the computer does not need to use the integrated display function at this time, and only needs to use a separate graphics card, because the computer does not exist in the independent graphics card. Need to give the cpu Ο display processing module power supply can realize the interactive communication between the CPU and the independent graphics card, but at this time, the power supply for the display processing module of the CPU is still powered, which will cause waste of electric energy. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a computer motherboard and a power supply control circuit thereon, which can detect the access of an independent graphics card to control whether or not to supply power to the display processing module of the CPU. [0005] A computer motherboard, which can be plugged into a separate graphics card and connected to a monitor 098116343 Form No. A0101 Page 4 / 13 pages 0992027705-0 201042438 Ο The computer motherboard includes a platform controller, one has a display processing module CPU, a power generation module, and first and second electrical switches; the platform controller is respectively connected to the monitor and the display processing module, and the display processing module is further coupled to the power generation module Connected to the group, the CPU is connected to the independent graphics card, the independent graphics card is also connected to the monitor, the first end of the first electrical switch is connected to the display processing module through a first resistor, the first electrical switch The second end is grounded, the third end of the first electric switch is connected to a first power source and a first end of the second electric switch through a second resistor, and the second end of the second electric switch is grounded, the second electric The third end of the switch is connected to the power generating module and the independent drawing card, and is connected to a second power source through a third resistor; when the independent graphics card is not connected, the display processing module of the CPU outputs a high level Make the first The switch is turned on, the second electrical switch is turned off, and the power generating module supplies power to the display processing module of the CPU, so that the CPU can process the display data and transmit the processed display data to the monitor through the platform controller. Displaying, when the independent graphics card is accessed, the independent graphics card outputs a low level, so that the power generation module stops supplying power to the display processing module of the CPU, so that the display processing module of the CPU stops working, The CPU transfers the data to be displayed to the independent graphics card for processing and then transmits it to the monitor for display. [0006] A power supply control circuit includes a power generation module and first and second electrical switches, and the first end of the first electrical switch is coupled to a display processing module of the CPU through a first resistor, the first The second end of the switch is connected to the first end of the first electric switch and the second end of the second electric switch, and the second end of the second electric switch is grounded, the 098116343 Form No. A0101 Page 5 of 13 0982027705-0 201042438 = "After the one card is not connected, the CPU:::-Guangdong power supply; when the independent continuation of an electric switch leads to the group output high power Ping makes the display processing mode of the first «, the power source generates a template to the data,, 'the CPU processes the flat that needs to be displayed, and:; after turning off the card 1, the _ field map card outputs low electric power, so that The domain 纟 is assigned to the CPU_show processing module #电' to stop the display processing module of the CPII. 、, and for [0007] [0008]: g computer motherboard and the power supply (4) circuit thereon Detecting the independent drawing 疋 No picking up 'When the _ _ card to pick up, the first - the second switch of the electric switch is cut off' The power generation module gives the display of the CPU and the power supply of the private group, so that (10) performs the magnetic display* function, and when the independent edge card is connected, the power generation module stops supplying power to the more and more display processing module. [Embodiment] 1. Please refer to FIG. 1 'The computer motherboard 8 of the present invention can be connected to a separate graphics card 1〇6 and connected to a monitor 80. Platform Controller Hub 'PCH 90, one CPU (

A central processing unit 100 and a power supply control circuit 10. The platform controller 90 includes an integrated display interface D1. The CPU 100 includes a display processing module 101. The display processing module 101 includes a power supply pin VAXG and a power enable pin CPU_GFX_EN. The stand-alone graphics card 106 includes a ground pin B22.

The platform controller 90 is respectively connected to the monitor 80 and the display processing module 101. The power supply enable pin of the display processing module 101 is CPU_GFX_EN 098116343. Form number A0101 Page 6 of 13 page 0982027705-0 [0009] 201042438 and a power supply pin VAXG are connected to the power supply control circuit 1A. The 〇{>1| ι〇〇 is connected to the independent graphics card 106, and the independent graphics card 〇6 is connected to the monitor 80, the power supply control Circuit 1 is also connected to ground pin B22 of the separate graphics card ι. _] Please - and _2, the power supply control circuit 1G of the present invention is used to detect the access of the independent graphics card 106 to control whether to supply t to the power supply pin VAXG of the display processing module 101, thereby controlling the computer motherboard 8 Whether to perform the integrated display function on the top. A preferred embodiment of the power control circuit 10 includes a power supply generation module 102 and a control circuit 104. The power generation module 102 includes a control pin GFX_VR_EN. Just as the control circuit 104 includes - an electro-optical crystal, a field effect transistor, and a resistor IM-R3. The base (the first end) of the transistor Q1 is connected to the power supply enable pin cpu_GFX_EN of the display processing module 1 ο 1 through the resistor, and the emitter (second end) of the transistor Q1 is grounded, the transistor The collector (third end) of Q1 is connected through the electric M2 - the power source 5V_SYS and the gate (the first end) of the field effect transistor Q2, and the source ❹ (second end) of the field effect transistor is grounded, The drain (third end) of the field effect transistor Q2 is connected to the control pin gfx_vr_en of the power generation module 1 〇2 and the ground pin B22' of the independent graphics card 106. A power supply VCC is also connected through the resistor R3. In this embodiment, the power supply vcc can be a DC power supply of 5V, 3·3V, 1·IV, etc., and the power supply 5V_SYS is preferably a 5V system power supply, and the optimal resistance values of the resistors R1-R3 are respectively It is 471 ίΩ, ΙΟΙίΩ, ΙΟΙίΩ 'the transistor is used as an electrical switch as a νρν-type transistor'. The field effect transistor Q2 acts as an electrical switch for the NM0S field effect transistor. In other embodiments, the transistor Q1 can also adopt other types of power 098116343 Form No. A0101 Page 7 / 13 pages 0982027705-0 201042438 Switch 'such as field effect transistor, etc., the field effect transistor Q2 can also be used Other types of electrical switches. [0012] In the following, the power supply control circuit 1 of the present invention detects the access of the independent graphics card 106 to control whether to supply power to the power supply pin VAXG of the display processing module 101 of the CPU 1 and thus control the computer motherboard 8 The process of whether the integrated display function is executed: [0013] When the independent graphics card 106 is not connected, the power enable pin CPU_GFX_EN of the display processing module 1 〇1 of the CPU 100 is high after the computer is powered on. 'The base of the transistor Q1 of the control circuit 104 is extremely high, the transistor Q1 is turned on 'so that the gate of the field effect transistor Q2 is at a low level, and the field effect transistor Q2 is turned off'. Then the power generation module 1〇2 The control pin GFX_ViLEN is at a high level, so that the power generation module 102 supplies power to the power supply pin VAXG of the display processing module 101 of the CPU 100, so that the CPU 100 can process the data to be displayed and after processing The display data is sent to the platform controller 9〇, and the platform controller 90 transmits the display data through the product........: The body display interface D1 is sent to the monitoring and evaluation file for display. When the independent graphics card:::; 106 is plugged into the computer motherboard 8 and the computer φ is powered, the ground pin B22 of the independent graphics card 106 is at a low level, so that the power generation module 1〇2 is controlled. When the power GFX_VR_EN is low, the power generation module 1〇2 stops supplying power to the power supply pin VAXG of the display processing module 101 of the CPU 1 'to stop the display processing module 1〇1 of the CPU 1〇〇 When working, cpu 1 0 0 transfers the data to be displayed to the independent grab chart 1 〇 6 for processing and then transmits it to the monitor 80 for display. [0014] The power supply control circuit 10 of the present invention has a simple circuit structure and can detect the access of the independent graphics card 106 to control whether or not to display the processing module of the CPu 1 page. Page 8 of 13 098116343 Form No. A0101 201042438 101 The power supply pin VAXG supplies power, thereby controlling whether the computer motherboard 8 performs the integrated display function, and when the independent graphics card 106 is mounted on the computer motherboard 8, the power supply of the display processing module 丨〇1 of the CPU 100 is not given. The power supply of the foot VAXG enables the display processing module of the CPU 100 to stop working, thereby saving energy. [0015] In summary, the present invention complies with the invention patent requirements 爰 提出 patent application. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing a preferred embodiment of a computer motherboard of the present invention connected to an independent green card and a monitor. [0017] FIG. 2 is a circuit diagram of a preferred embodiment of the power supply control circuit of the present invention [0018]

Table·Single number A0101 Page 9 of 13 0982027705-0

Claims (1)

  1. 201042438 VII. Patent application scope 1. A power nozzle motherboard can be plugged into a separate graphics card and connected to a monitor. The computer motherboard includes a platform controller, and a display has a display (10), a power supply. Generating a module and first and second electrical switches; the platform controller is respectively connected to the monitor and the display processing module, and the display processing module is further connected to the power generating module, the CPU and the independent % map The card is connected to the monitor, and the first read card is connected to the monitor. The first end is connected to the display processing module through a first resistor, and the second end of the first electrical switch is also connected, and the third electrical switch is The second end of the second electric switch is connected to the power generating module and the second end of the second electric switch is connected to the first end of the second electric switch. The independent graphics card is also connected to the second power supply through the third resistor; the second power supply is not enabled when the independent edge card is not connected; the display processing module of the CPU outputs a high level so that the first electrical switch turns on the first electrical switch By the end, the power generation module gives the coffee display The processing module supplies power, so that the CPU can process the display data and transmit the processed display data to the monitor through the platform control to display. When the single-reading card is touched, the face-reading card output (four) is flat. The power generation module stops supplying power to the display processing module of the CPU, so that the display processing module of the CPU stops the jade, and the inspection shows that the material is transmitted to the independent edge map and then the secret is sent to the secretary for display. . 2. If _ please patent scope! The first electronic switch of the computer motherboard is a transistor, and the first end, the second end and the third end of the first electric switch are respectively a base, an emitter and a collector of the transistor. . 3. The computer motherboard according to claim 1, wherein the second electrical switch is a field effect transistor, the second end of the second electrical switch and the 098116343 form number A0101 page 13 of 13 Page 0982027705-0 201042438 . The third end is the gate, source and drain of the field effect transistor, respectively. 4. The computer motherboard according to claim 1, wherein the resistance values of the first to third resistors are 4.71 Ω, ΙΟΙίΩ, 10 kQ, respectively. 5. The computer motherboard of claim 1, wherein the first power source is a 5 V system power supply. 6. The computer motherboard of claim 1, wherein the second power source is a 5V, 3.3V or 1. IV DC power source. The power supply control circuit includes a power generation module and first and second power switches, wherein the first end of the first power switch is connected to a cpu display processing module through a first resistor, the first The second end of the electric switch is grounded, and the third end of the _ 黾 switch is connected to a first power source and a first end of the second electric switch through a second resistor, and the second end of the second electric switch is grounded, the first The third end of the second power switch is connected to the power generating module and a separate drawing card, and the ring is connected to the second power source through the second resistor; when the independent graphics card is not connected, the display processing module output of the CPU is high. The level is such that the first electrical switch is turned on, the second electrical switch is turned off, the power generating module supplies power to the display processing module of the CPU, and ^ Φ causes the CPU to process the data to be displayed, when the independent drawing card is accessed. Thereafter, the independent graphics card outputs a low level, so that the power generation module stops supplying power to the display processing module of the αυ, so that the display processing module of the CPU stops working. 8. The power supply control circuit of claim 7, wherein the first electrical switch is a transistor, and the first end, the second end, and the first end of the first electrical switch are respectively Base, emitter and collector. 9. The power supply control circuit of claim 7, wherein the _th electrical switch is a field effect transistor, and the first end, the _th end, and the third end of the second electric switch are respectively the field effect The gate, source and pole of the transistor. 098116343 Form number A0101 Page 11 of 13 0982027705-0
TW98116343A 2009-05-18 2009-05-18 Motherboard of computer and power supply control circuit thereof TW201042438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW98116343A TW201042438A (en) 2009-05-18 2009-05-18 Motherboard of computer and power supply control circuit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW98116343A TW201042438A (en) 2009-05-18 2009-05-18 Motherboard of computer and power supply control circuit thereof

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TW201042438A true TW201042438A (en) 2010-12-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI454898B (en) * 2010-12-20 2014-10-01 Intel Corp Apparatus and computer system for vr power mode interface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI454898B (en) * 2010-12-20 2014-10-01 Intel Corp Apparatus and computer system for vr power mode interface

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