TW200532562A - Voltage adjusting apparatus, module and method being able to adjust voltage dynamic - Google Patents

Abstract

A voltage adjusting apparatus has VID code transforming circuit and mode selecting circuit. Wherein, the VID code transforming circuit determines a core voltage, which is CPU required accordance with a first VID code outputted by CPU. Otherwise, mode selecting circuit control the voltage adjusting apparatus operation in a dynamic VID code mode or a fixed VID code mode.

Description

200532562 V. Description of the invention (1) Technical field to which the invention belongs The present invention relates to a voltage adjusting device ', and particularly to a voltage adjusting device capable of dynamically adjusting voltage. Prior Art FIG. 1 is a block diagram showing a conventional operation voltage supplied to a central processing unit. Please refer to FIG. 1 'CPU' 1 0 1 in the computer system generates a Voltage Identification Code (VID) according to the required core voltage. On the motherboard of a conventional computer system, the central processing unit CPU 101 transmits the voltage identification code VID to a pulse width modulation (PWM) device 103. The pulse width modulation device 103 determines the core voltage Vcore to be supplied to the central processing unit CPU 101 according to the voltage identification code V ID. And because the voltage identification code generated by the previous central processing unit is fixed, when certain conditions (such as overclocking the computer system) need to adjust the core voltage to a higher or lower level of operating voltage, just directly The core voltage can be adjusted up or down by a fixed value. However, at present some central processing units have dynamic voltage identification codes. That is to say, the core voltage will not only adjust with the voltage adjustment value, but also change with the state of the central processing unit. Therefore, the conventional fixed method of adjusting the core voltage becomes unsuitable. Fig. 2 is a block diagram showing a conventional module capable of dynamically adjusting voltage. In order to overcome the central processing unit with a dynamic voltage identification code, a module capable of dynamically adjusting the voltage has also been recently developed. Please refer to FIG. 2, which is generated by a central processing unit C P U 2 0 1 with a dynamic voltage identification code.

13093TWF.PTD Page 6 200532562 V. Description of the invention (2) The voltage identification code VI D1 will change with the working status of the central processing unit CPU 201. Therefore, when the conventional voltage-adjustable module 2 1 0 receives the voltage identification code V I D 1, the application 2 16 will determine the working status of the central processing unit 2 0 1. When the application program 2 1 6 knows the operating status of the central processing unit C P U 2 0 1 according to the voltage identification code V I D 1, it will inform the voltage adjustment device 2 1 2. The voltage adjustment device 2 1 2 outputs the voltage identification code V I D 2 to the pulse width modulation device 2 1 4 according to the voltage identification code V I D 1 and the voltage adjustment value. Finally, the pulse width modulation device 2 1 4 adjusts the core voltage to the operating voltage Vact according to the voltage identification code VI D2, and sends the operating voltage Vact to the central processing unit CPU 201. Although the conventional voltage-adjustable module can change the operating voltage according to the working state of the central processing unit. However, the conventional module capable of dynamically adjusting the voltage uses an application program to determine the working status of the central processing unit. Not only the processing time is slow, but the design is also complicated. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a voltage adjustment device that can determine the magnitude of an operating voltage according to a working state and a voltage adjustment value of a central processing unit. It is still another object of the present invention to provide a module and method for dynamically adjusting voltage, which can determine the magnitude of the operating voltage by a simple hardware circuit connection. To achieve the above and other objectives, the present invention provides a voltage adjusting device that receives a first voltage identification code sent by a central processing unit,

13093TWF.PTD Page 7 200532562 V. Description of the invention (3) The second voltage identification code is output to the pulse width modulation device. The voltage adjusting device of the present invention includes a voltage identification code conversion circuit and a mode selection circuit. The voltage identification code conversion circuit learns the core voltage required by the central processing unit according to the first voltage identification code, and adjusts it with a voltage adjustment value to obtain and output a second voltage identification code. In addition, the mode selection circuit is used to operate the voltage adjustment device in a dynamic voltage identification code mode or a fixed voltage identification code mode. When the voltage adjusting device works in the dynamic voltage identification code mode, the voltage identification code conversion circuit can dynamically accept the first voltage identification code, and then dynamically change the second voltage identification code. In a preferred case, the voltage adjusting device of the present invention is a monolithic integrated circuit. In addition, the voltage adjustment value mentioned above is programmable, and the voltage adjustment value can be positive or negative. In one embodiment of the present invention, the voltage identification code conversion circuit is implemented in a table lookup manner. From another perspective, the present invention provides a module capable of dynamically adjusting voltage, which is suitable for an electronic device. The electronic device includes a central processing unit, and the central processing unit issues a first voltage identification code based on the core voltage. The voltage-adjustable module of the present invention includes a voltage adjustment device coupled to a central processing unit and a pulse width modulation device coupled to the voltage adjustment device. The voltage adjustment device receives the first voltage identification code and adjusts the core voltage with a voltage adjustment value.

13093TWF.PTD Page 8 200532562 V. Description of the invention (4) Press and output the second voltage identification code. Next, the pulse width modulation device adjusts the core voltage to the operating voltage according to the second voltage identification code, and supplies the operating voltage to the central processing unit. In addition, the 'voltage adjustment device is operated in a dynamic voltage identification code mode or a fixed voltage identification code mode. When the voltage adjustment device works in the dynamic voltage identification code mode, it dynamically accepts the first voltage identification code and dynamically changes the second voltage identification code. Generally, the aforementioned electronic devices are computer systems. From another perspective, the present invention provides a method for dynamically adjusting voltage. First, the present invention provides a voltage adjusting device. The voltage adjusting device is simply manufactured by a hardware circuit. The voltage adjustment device then receives a first voltage identification code issued by the central processing unit based on the required core voltage, and adjusts the core voltage with a voltage adjustment value based on the first voltage identification code. Finally, according to the adjustment result, a second voltage identification code is output to the pulse width modulation device, so that it can adjust the core voltage to the operating voltage and supply the operating voltage to the central processing unit. As mentioned above, the present invention generates a second voltage identification code based on the first voltage identification code and the voltage adjustment value. Therefore, the present invention can adjust the core voltage to the operating voltage according to the working state of the central processing unit. In addition, because the present invention can convert the first voltage identification code into the second voltage identification code by means of a look-up table, the present invention can be implemented by a simple hardware circuit connection. In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes specific embodiments with reference to the accompanying drawings for details.

13093TWF.PTD Page 9 200532562 V. Description of Invention (5) The detailed description is as follows. Implementation It is assumed that the central processing unit in the following embodiment has a dynamic voltage identification code. FIG. 3 is a block diagram of a module capable of dynamically adjusting voltage according to a preferred embodiment of the present invention. Please refer to FIG. 3. The voltage-adjustable module 3 2 0 of the present invention can be applied to (but not limited to) an electronic device such as a computer system, which is mainly received by the voltage adjustment device 3 2 2 and received by a central processing unit. The CPU 30 1 generates a voltage identification code VID 1 according to the required core voltage, and then generates a voltage identification code VID 2 to the pulse width modulation device 3 2 8 according to the voltage identification code VID 1 and a voltage adjustment value, so as to The core voltage is adjusted to the operation voltage Vact, and the operation voltage Vact is supplied to the central processing unit CPU 301. Generally speaking, the voltage adjustment device 3 2 2 is a single chip integrated circuit. In more detail, the voltage adjustment device 3 2 2 includes a voltage identification code conversion circuit 3 2 4 and a mode selection circuit 3 2 6. The voltage adjusting device 3 2 2 of the present invention can work in two modes, one is a dynamic voltage identification code mode, and the other is a fixed voltage identification code mode. When the voltage identification code VI D1 sent from the central processing unit CPU 301 is a fixed value, the mode selection circuit 326 controls the voltage adjustment device 322 to operate in the fixed voltage identification code mode. And when the voltage identification code VID 1 sent by the central processing unit CPU 3 0 1 changes with the core voltage required by the central processing unit CPU 3 0 1, the mode selection circuit 3 2 6 will control the voltage adjustment device 3 2 2 Working in dynamic voltage identification code mode. At this time, the voltage adjustment device 3 2 2 is dynamic.

13093TWF.PTD Page 10 200532562 V. Description of the invention (6) Receive the voltage identification code VID 1 dynamically and change the voltage identification code VID2 dynamically ° Please continue to refer to Figure 1, when the voltage adjustment device 3 2 2 receives the voltage identification code VID 1 At this time, if the voltage adjustment device 3 2 2 works in the dynamic voltage identification code mode, the voltage identification code conversion circuit 3 2 4 will according to the voltage identification code VI D1 generated by the central processing unit CPU 301, and then cooperate with it to adjust the central The voltage adjustment value of the core voltage of the processing unit CPU 301 causes the voltage adjustment device 3 2 2 to convert the voltage identification code VID 1 into a voltage identification code v I d 2. The pulse width modulation device 3 2 8 generates the operating voltage Vact to the central processing unit CPU 301 according to the voltage identification code VID2. Therefore, in another option T =, the voltage identification code conversion circuit 3 24 can also use a table lookup method to allow the user to allow the user to make a positive or negative value according to the actual value. Computer system ^ = condition needs to be set. For example: When the central processing unit will need two for overclocking operation, the operating voltage in the computer system will be higher than the core voltage required for normal operation to the dynamic value of the invention; You can set the voltage adjustment code VID 1 to replace the original core = ▲ voltage module 3 2 0 to match the voltage recognition V act. In addition, in this implementation, the electric castle is adjusted to a higher operating voltage. Those skilled in the art can recognize that the 'voltage adjustment value is programmable' because of the voltage adjustment value. For example, by modifying the content of the Wei blade body, FIG. 4 is a flow chart showing a method of adjusting the voltage according to the present day & Please refer to FIG. 4. First, the present invention is implemented as steps.

200532562 V. Description of the invention (7) S 4 10 provides a voltage adjustment device for wiring only hardware circuits, and the voltage adjustment device has two working modes: dynamic voltage identification code mode and fixed voltage identification code mode. The voltage adjusting device receives the first voltage identification code generated by the central processing unit according to the core voltage required by the central processing unit as described in step S420. As described in step S430, the voltage adjustment device adjusts the core voltage of the central processing unit according to the first voltage identification code and a user-defined voltage adjustment value. Finally, as described in step S440, the voltage adjustment device generates a second voltage identification code to the pulse width modulation device according to the result of adjusting the core voltage. When the voltage adjustment device works in the dynamic voltage identification code mode, that is, when the first voltage identification code changes with the core voltage required by the central processing unit, the voltage adjustment device dynamically receives the first voltage identification code. And dynamically change the second identification code. In summary, the present invention generates a second voltage identification code for determining an operating voltage based on a first voltage identification code generated by a core voltage used to indicate an operating state of a central processing unit. Therefore, the present invention can adjust the operation voltage according to the working state of the central processing unit. In addition, the voltage identification code conversion circuit in the voltage adjusting device of the present invention can be implemented by a table lookup method. Therefore, the present invention can be completed by means of wiring of a pure hardware circuit. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall be determined by the scope of the attached patent application.

13093TWF.PTD Page 12 200532562 Brief Description of Drawings Figure 1 is a block diagram showing a conventional operation voltage supplied to a central processing unit. Fig. 2 is a block diagram showing a conventional module capable of dynamically adjusting voltage. FIG. 3 is a block diagram of a module capable of dynamically adjusting voltage according to a preferred embodiment of the present invention. FIG. 4 is a flowchart of a method for dynamically adjusting voltage according to a preferred embodiment of the present invention. [Illustration of diagrammatic symbols] 101, 201, 301: Central processing unit 1 0 3, 2 1 4, 3 2 8: Pulse width modulation device 2 1 0: Known modules 212, 322 that can dynamically adjust voltage: Voltage adjustment device 2 1 6: Application program 3 2 0: Module that can dynamically adjust voltage 3 2 4: Voltage identification code conversion circuit 3 2 6: Mode selection circuit S410: Provide a voltage adjustment device, and this voltage adjustment device is simple S 4 2 0 made for the hardware circuit: receiving the first voltage identification code S 4 generated by the central processing unit according to the core voltage. 3 0: adjusting the core voltage S 4 according to the first voltage identification code and cooperating with a voltage adjustment value. 4 0: Output the second voltage identification code to the pulse wave according to the adjustment result

13093TWF.PTD Page 13 200532562 Schematic description of width adjustment device

IIIHI

13093TWF.PTD Page 14

Claims (1)

200532562 6. Scope of patent application 1. A voltage adjusting device that receives a first voltage identification code sent by a central processing unit and outputs a second voltage identification code to a pulse width modulation device. The voltage adjustment device It includes: a voltage identification code conversion circuit for obtaining a core voltage required by the central processing unit according to the first voltage identification code, and adjusting it with a voltage adjustment value to obtain and output the second voltage identification code And a mode selection circuit for causing the voltage adjustment device to operate in one of a dynamic voltage identification code mode and a fixed voltage identification code mode, and when the voltage adjustment device operates in the dynamic voltage identification code mode, The voltage identification code conversion circuit can dynamically accept the first voltage identification code and dynamically change the second voltage identification code. 2. The voltage adjustment device according to item 1 of the scope of patent application, which is a integrated circuit of a single chip. 3. The voltage adjustment device as described in item 1 of the scope of patent application, wherein the voltage adjustment value is programmable. 4. The voltage adjusting device according to item 3 of the scope of patent application, wherein the voltage adjusting value is one of a positive value and a negative value. 5. The voltage adjusting device according to item 1 of the scope of patent application, wherein the voltage identification code conversion circuit is implemented by a look-up table. 6 · —A module capable of dynamically adjusting voltage is suitable for an electronic device, the electronic device includes a central processing unit, and the central processing unit issues a first voltage identification code according to a core voltage, and the voltage can be dynamically adjusted The modules include: 13093TWF.PTD Page 15 200532562 VI. Patent application scope A voltage adjustment device is coupled to the central processing unit to receive the first voltage identification code and output a second voltage identification code according to a voltage adjustment value; And a pulse width modulation device coupled to the voltage adjustment device for adjusting the core voltage to an operating voltage according to the second voltage identification code, and supplying the operating voltage to the central processing unit, The voltage adjustment device operates in a dynamic voltage identification code mode or a fixed voltage identification code mode. When the voltage adjustment device operates in the dynamic voltage identification code mode, it dynamically accepts the first voltage identification code. While dynamically changing the second voltage identification code. 7 · The module capable of dynamically adjusting the voltage as described in item 6 of the scope of patent application, wherein the voltage adjusting device is a single chip integrated circuit. 8. The module capable of dynamically adjusting the voltage as described in item 6 of the scope of patent application, wherein the voltage adjustment value is programmable. 9. The dynamically adjustable voltage module as described in item 8 of the scope of patent application, wherein the voltage adjustment value is one of a positive value and a negative value. 10. The module capable of dynamically adjusting the voltage as described in item 6 of the scope of patent application, wherein the voltage adjusting device implements a function of converting the first voltage identification code to the second voltage identification code by means of a table lookup. 1 1. The voltage-adjustable module according to item 6 of the scope of patent application, wherein the electronic device is a computer system. 1 2. A method for dynamically adjusting voltage, including the following steps: providing a voltage adjusting device, the voltage adjusting device is simply made by a hardware circuit; 13093TWF.PTD Page 16 200532562 6. The scope of the patent application receives a first voltage identification code, which is issued by a central processing unit based on a core voltage; according to the first voltage identification code, and a voltage An adjustment value to adjust the core voltage; and according to the adjustment result, output a second voltage identification code to a pulse width modulation device to adjust the core voltage to an operating voltage and supply the operating voltage to Central Processing Unit. 1 3. The method for dynamically adjusting the voltage as described in item 12 of the scope of patent application, wherein the voltage adjusting device is operated in one of a dynamic voltage identification code mode and a fixed voltage identification code mode. When the adjustment device works in the dynamic voltage identification code mode, it dynamically receives the first voltage identification code and dynamically changes the second voltage identification code. 14. The method for dynamically adjusting voltage as described in item 12 of the scope of patent application, wherein the voltage adjusting device is a integrated circuit of a single chip. 15. The method for dynamically adjusting the voltage as described in item 12 of the scope of patent application, wherein the voltage adjustment value is programmable. 16. The method for dynamically adjusting a voltage as described in item 15 of the scope of patent application, wherein the voltage adjustment value is one of a positive value and a negative value. 1 7. The method for dynamically adjusting the voltage as described in item 12 of the scope of patent application, wherein the voltage adjusting device implements a function of converting the first voltage identification code to the second voltage identification code by means of a table lookup. 13093TWF.PTD Page 17