CN211236838U - Initialization reset circuit after notebook computer is updated - Google Patents
Initialization reset circuit after notebook computer is updated Download PDFInfo
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- CN211236838U CN211236838U CN201922116751.0U CN201922116751U CN211236838U CN 211236838 U CN211236838 U CN 211236838U CN 201922116751 U CN201922116751 U CN 201922116751U CN 211236838 U CN211236838 U CN 211236838U
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Abstract
The utility model discloses an initialization reset circuit after the update of a notebook computer, which comprises a power input end, an operation unit, a reset unit and a signal output end; the operation unit comprises a pull-up resistor R1, a decoupling capacitor C1 and an operation output interface, wherein two ends of the pull-up resistor R1 are respectively connected with the power input end and the decoupling capacitor C1, the decoupling capacitor C1 is grounded, the operation output interface is arranged between the pull-up resistor R1 and the decoupling capacitor C1, and the operation output interface is connected with the signal output end; the reset unit comprises a hardware switch SW1, one end of the hardware switch SW1 is grounded, and the other end of the hardware switch SW1 is connected with the operation output interface. According to the initialization reset circuit after the notebook computer is updated, the steps of initializing the EC register after the firmware of the notebook computer is updated and the version of the startup control chip U1 are simplified, and the use convenience and the safety of the notebook computer are improved.
Description
Technical Field
The utility model relates to a chip reset circuit technical field, specifically an initialization reset circuit after notebook computer updates.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
With the progress of technology, notebook computers are developed towards being lighter, thinner and portable. In order to make the notebook lighter, thinner and more portable, it is necessary to embed the battery of the notebook into the machine. After the notebook computer is researched, debugged and sold, and a user updates the firmware and the version of the startup control chip U1 independently, because the power of the startup control chip U1 is cut off before the notebook computer is started for the first time after the firmware is refreshed, the register of the startup control chip U1 is initialized, and the problem that the notebook computer cannot be started is avoided. However, because the battery is built in the machine, the rear cover of the machine needs to be disassembled to pull out the battery, and the EC register of the startup control chip U1 is initialized, so that the problem of complicated steps exists, and the whole machine is protected from being fixed and the potential safety hazard of disassembling the machine is caused.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the embodiment of the utility model provides a.
The embodiment of the application discloses: the level of a signal output end is pulled down to be in a low level state by the conduction of a hardware switch SW1, so that an EC register of a startup control chip U1 is initialized, the register initialization step of the EC of a startup control chip U1 of the notebook computer is simplified, and the use convenience and the safety are improved.
In order to achieve the above object, the present invention provides an initialization reset circuit after updating a notebook computer, which comprises a power input terminal, an operation unit, a reset unit and a signal output terminal; the operation unit comprises a pull-up resistor R1, a decoupling capacitor C1 and an operation output interface, wherein two ends of the pull-up resistor R1 are respectively connected with the power input end and the decoupling capacitor C1, the decoupling capacitor C1 is grounded, the operation output interface is arranged between the pull-up resistor R1 and the decoupling capacitor C1, and the operation output interface is connected with the signal output end; the reset unit comprises a hardware switch SW1, one end of the hardware switch SW1 is grounded, and the other end of the hardware switch SW1 is connected with the operation output interface.
Based on the structure, when the startup control chip U1 is normally started, the power input end inputs voltage, the signal output end is pulled up to be in a high level state, and the mainboard of the notebook computer is normally powered on and started; when the notebook computer updates the firmware and the version of the startup control chip U1, the hardware switch SW1 is turned on, the ECRST # pin on the startup control chip U1 is pulled down to be in a low level state, the EC register of the startup control chip U1 is initialized, and after the hardware switch SW1 is turned off, the ECRST # pin on the startup control chip U1 is pulled up again to be in a high level state, and the mainboard of the notebook computer is powered on to be started; the hardware switch SW1 can be arranged on the shell of the notebook computer, so that the function of initializing the EC register without disassembling the computer can be realized, the solid keeping performance of the whole computer is improved, and the potential safety hazard of disassembling the computer is eliminated.
Preferably, the reset unit further includes a protection diode D1 connected in parallel with the hardware switch SW1, wherein one end of the protection diode D1 is grounded, and the other end is connected to the operation output interface.
Furthermore, the hardware switch SW1 is protected by the protection diode D1, so that the hardware switch SW1 can respond effectively when it needs to be turned on, thereby improving the reliability of the initialized reset circuit after the notebook computer is updated.
Preferably, the operation unit further comprises a protection resistor R2, and two ends of the protection resistor R2 are respectively connected to the operation output interface and the signal output terminal.
Further, by setting the protection resistor R2, the ECRST # pin of the power-on control chip U1 is protected, and the power-on control chip U1 of the notebook computer is prevented from being burned.
In conclusion, according to the utility model discloses an initialization reset circuit after notebook computer updates, after notebook computer updates firmware and start control chip U1 version, through switching on and off of hardware switch SW1, make the EC register of the start control chip U1 of notebook computer do the initialization, ensure that the notebook computer can normally go up the electric start, simplify the step of initializing the EC register after notebook computer updates firmware and start control chip U1 version, improve the convenience in use and the security of notebook computer.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an initialization reset circuit after a notebook computer is updated according to an embodiment of the present invention;
reference numerals of the above figures: 100-power input end, 200-running unit, 300-reset unit and 400-signal output end.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is shown between the two, and no indication or suggestion of relative importance is understood. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example (b): referring to fig. 1, the initialized reset circuit after the update of the notebook computer includes a power input terminal 100, an operation unit 200, a reset unit 300, and a signal output terminal 400. The power output terminal 100 and the signal output terminal 400 are based on the prior art, and the power input terminal 100 is used for inputting +3.3V pull-up resistor voltage; the signal output terminal 400 is connected to an EC register reset pin ECRST # of the notebook boot control chip U1 for transmitting a power-on signal and a reset signal.
In particular, the present invention relates to a method for producing,
the operation unit 200 includes a pull-up resistor R1, a decoupling capacitor C1, and an operation output interface, wherein both ends of the pull-up resistor R1 are respectively connected to the power input terminal 100 and the decoupling capacitor C1, the decoupling capacitor C1 is grounded, the operation output interface is disposed between the pull-up resistor R1 and the decoupling capacitor C1, and the operation output interface is connected to the signal output terminal 400. The pull-up resistor R1, the decoupling capacitor C1 and the operation output interface are all based on the prior art, and the pull-up resistor R1 is used for connecting the pull-up resistor voltage input by the power input terminal 100 and then pulling up the signal output terminal 400 to be in a high level state; the decoupling capacitor C1 is used to filter the output signal of the signal output terminal 400. In the present embodiment, the resistance value of the pull-up resistor R1 may be 47K Ω, and the capacitance value of the decoupling capacitor C1 may be 0.1 uF.
The reset unit 300 includes a hardware switch SW1, one end of the hardware switch SW1 is grounded, and the other end of the hardware switch SW1 is connected to the operation output interface. The hardware switch SW1 may be a push switch of the prior art. In this embodiment, the hardware switch SW1 is disposed on the back of the notebook computer, a small hole is reserved on the back cover, and a sharp object such as a pin is inserted through the small hole to press the hardware switch SW1, so that the hardware switch SW1 performs on and off operations.
Based on the structure, after the firmware and the startup control chip U1 version of the notebook computer are updated, the EC register of the startup control chip U1 of the notebook computer is initialized through the connection and disconnection of the hardware switch SW1, so that the notebook computer can be normally powered on and started, the step of initializing the EC register after the firmware and the startup control chip U1 version of the notebook computer are simplified, and the use convenience of the notebook computer is improved. The hardware switch SW1 can be arranged on the shell of the notebook computer, so that the function of initializing the EC register without disassembling the computer can be realized, the solid keeping performance of the whole computer is improved, and the potential safety hazard of disassembling the computer is eliminated.
As a preferred implementation manner of this embodiment, the reset unit 300 further includes a protection diode D1 connected in parallel with the hardware switch SW1, one end of the protection diode D1 is connected to ground, and the other end is connected to the operation output interface. The protection diode D1 is based on the prior art and is used to protect the circuit. The advantage of this arrangement is that the protection diode D1 is provided to protect the hardware switch SW1, and ensure that the hardware switch SW1 can respond effectively when it needs to be turned on, thereby improving the reliability of the initialized reset circuit after the notebook computer is updated. The model of the protection diode D1 in the present embodiment may be, and is not limited to, the PESD 06.
As a preferred implementation manner of this embodiment, the operation unit 200 further includes a protection resistor R2, and two ends of the protection resistor R2 are respectively connected to the operation output interface and the signal output terminal 400. The protection resistor R2 is based on the prior art and is used to protect the power-on control chip U1 connected to the signal output terminal 400. The advantage of this arrangement is that the ECRST # pin of the power-on control chip U1 is protected by the protection resistor R2, and the power-on control chip U1 of the notebook computer is prevented from being burned out. In the present embodiment, the resistance value of the protection resistor R2 may be 33 Ω.
The working principle is as follows:
1. when the notebook computer is normally started, the power input end 100 inputs voltage, the signal output end 400 is pulled up to be in a high level state, and the mainboard of the notebook computer is normally powered on and started;
2. after the firmware and the version of the startup control chip U1 are updated, the hardware switch SW1 is turned on, the ECRST # pin on the startup control chip U1 is pulled low to become a low level state, the EC register of the startup control chip U1 is initialized, the signal output terminal 400 becomes a high level after the hardware switch SW1 is turned off, the ECRST # pin on the startup control chip U1 is pulled high again to become a high level state, and the main board of the notebook computer is powered on and started.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (3)
1. An initialization reset circuit after the update of a notebook computer is characterized by comprising a power supply input end (100), an operation unit (200), a reset unit (300) and a signal output end (400);
the operation unit (200) comprises a pull-up resistor R1, a decoupling capacitor C1 and an operation output interface, wherein two ends of the pull-up resistor R1 are respectively connected with the power supply input end (100) and the decoupling capacitor C1, the decoupling capacitor C1 is grounded, the operation output interface is arranged between the pull-up resistor R1 and the decoupling capacitor C1, and the operation output interface is connected with the signal output end (400);
the reset unit (300) comprises a hardware switch SW1, one end of the hardware switch SW1 is grounded, and the other end of the hardware switch SW1 is connected with the operation output interface.
2. The initialized reset circuit after notebook computer upgrade as claimed in claim 1, wherein the reset unit (300) further comprises a protection diode D1 connected in parallel with the hardware switch SW1, one end of the protection diode D1 is connected to ground, and the other end is connected to the operation output interface.
3. The initialized reset circuit after the notebook computer is updated as set forth in claim 1, wherein the operation unit (200) further comprises a protection resistor R2, and two ends of the protection resistor R2 are respectively connected to the operation output interface and the signal output terminal (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116751.0U CN211236838U (en) | 2019-12-02 | 2019-12-02 | Initialization reset circuit after notebook computer is updated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922116751.0U CN211236838U (en) | 2019-12-02 | 2019-12-02 | Initialization reset circuit after notebook computer is updated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211236838U true CN211236838U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922116751.0U Active CN211236838U (en) | 2019-12-02 | 2019-12-02 | Initialization reset circuit after notebook computer is updated |
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| Country | Link |
|---|---|
| CN (1) | CN211236838U (en) |
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2019
- 2019-12-02 CN CN201922116751.0U patent/CN211236838U/en active Active
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