TW201100816A - System and method for testing CPU voltage - Google Patents

Abstract

A system for testing CPU voltage includes a voltage detecting unit, to detect input voltages of a CPU and output at least one detecting voltage value; a data processing unit, to receive the detecting voltage value and judge whether the detecting voltage value stay within a permitting voltage range, and to output a VID code control signal; and a VID code encoding unit, to receive the VID code control signal and output a VID code signal to a PWM controller to regulate the input voltages of the CPU.

Description

201100816 . VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a CPU voltage test system. [Prior Art] [0002] Conventional CPUs generally use an adaptive voltage regulation technique to adjust the input voltage. That is, the CPU adds a complex VID (V〇ltage Identifica- tion 'voltage identification) pin for the VID pins. A PWM (Pulse Width Modulation) controller that transmits a VID Code to the input voltage that controls the CPU. After the power is turned on, the CPU sends a VID Code signal to the PWM controller through the VID pins to control the PWM controller to output a pulse signal to force (Voltage Regulation Module) to output a predetermined CPU input voltage. Ίβ1 [0003] In the development stage of the computer motherboard, the hardware circuit design needs to be improved, in order to ensure the normal operation of the CPU 'requires: to test the CPU voltage of the power supply circuit of the input voltage of the gpu" • The conventional test method is Manually set a VID Code and pass it to the PWM controller. The PWM controller controls the input voltage of the rated CPU of the VRM output, and then uses the three-meter to measure and manually record the input voltage of the CPU. However, this measurement method requires a lot of manpower and time, and may result in erroneous test results due to human factors. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a CPU voltage test system and method thereof that can automatically test the turn-in voltage of a CPU. [0005] 098121275 A CPU voltage test system includes: an electric waste tilting unit form nickname A0101 page 3 / a total of 17 pages for detecting 0982036181-0 201100816 a CPU input voltage and output at least one detected voltage value; a data processing unit, configured to receive the detected voltage value and determine whether the detected voltage value is within an allowable voltage range and for outputting a VID Code control signal; and a VID Code encoding unit for receiving the VID The Code controls the signal and outputs a VID Code signal to a PWM controller to adjust the input voltage of the CPU. [0006] A CPU voltage test method includes the following steps: [〇〇〇7] a. transmitting a VID Code control signal to a VID Code coding unit; [0008] b. The VID Code coding unit is based on the received VI] The Code control signal generates a VID Code signal and transmits it to a PWM controller to adjust the input voltage of a CPU; [0009] c. detecting the input voltage of the CPU and outputting at least one detected voltage value [0010] ] d. receiving the detected voltage value and determining whether the detected voltage 俾 is within an allowable voltage value range. If the town: the measured voltage value is within the allowable voltage value range, determining whether the VID Cole control section number is The last one of the VID Code control signals corresponding to the plurality of preset VID Codes; and [0011] e. if the VID Code control signal is not the last one of the VID Code control signals corresponding to the vid codes, then the next one is transmitted. The vid Code control signal is sent to the VID Code encoding unit and returns to step b. [0012] The CPU voltage test system and method of the present invention rotates a VID Code control signal through the data processing unit to control the vid Code encoding unit to transmit a VID Code signal to the PWM controller to adjust the input power of the CPU 098121275. No. A0101 Page 4 of 17 page 0982036181-0 201100816 Press, then the input unit of the CPU is measured by the electric measuring unit and the detected voltage value is output, and the data processing unit receives the detected voltage value, Whether to determine whether to transmit the next VID Code control according to whether the detected voltage value is within the allowable voltage value range and whether the VID Code control signal is the last one of the VID Code control signals corresponding to the VID c〇de The signal is given to the VID Code coding unit, which automatically tests the input voltage of the CPU, which not only improves the test efficiency, but also avoids erroneous test results due to human factors. [Embodiment] [0013] Referring to FIG. 1, a preferred embodiment of the CPU voltage test system I of the present invention includes a voltage detector unit 12, a data processing unit 14, and a VID C 〇de 编马单 το 1 β. [0014] The data processing unit 14 is disposed in a computer system (not: the output), and the data processing unit 14 and the voltage detecting unit 12 send the data processing unit 14 and the VID Code encoding unit 16 The operation of the voltage detecting unit 12, the VID Code encoding unit 16 and the data processing Q unit 14 is performed through an operation interface (not shown) displayed on a display of the computer system. In other embodiments, the data processing unit 14 and the voltage detecting unit 丨 2 and the data processing unit 14 and the VID Code encoding unit 16 can also be connected through the rs-232C data line. [0015] The bevel processing unit 14 is configured to output a VID Code control signal to the VID Code encoding unit 16, read a VID Code signal output by the VID Code encoding unit 16, and receive the complex detection output by the voltage detecting unit 丨2. The voltage value and the detected voltage value are analyzed and output a 098121275 Form No. A0101 Page 5 of 17 098 201100816 Test result. [0016] The VID Code encoding unit 16 is configured to receive the VID Code control signal. And the VID Code signal is transmitted to a PWM controller 20, and the PWM controller 20 outputs a pulse signal to a voltage conversion circuit 30 according to the VID Code signal, and the voltage conversion circuit 30 An input voltage is provided to the CPU 40 according to the pulse signal. [0017] The voltage detecting unit 12 is configured to detect an input voltage of the CPU 40 and output the detected voltage value to the data processing unit 14. [0018] The result includes the VID C 〇de, the reference voltage value, the allowable voltage value range, the maximum value and the minimum value of the measured voltage value corresponding to the VID Code control signal, and the state of the input voltage of the CPU 40 corresponding to the VID Code control signal. "PASS", "Code Failed" and "Down failed" respectively indicate that the input voltage of the CPU 40 is normal, the VID Code signal output is abnormal, and the power supply circuit of the CPU 40 is abnormal. [0019] Please refer to FIG. 2 and FIG. 3 together. The method for applying the CPU voltage test system 10 to test the voltage of the CPU 40 includes the following steps: [0020] al: setting a plurality of test parameters in the data processing unit 14, the tests The parameters include the start and end values of the complex consecutive VID Code such as 0000001 0 and 10110010, the start value and the end value of the reference voltage value corresponding to the start value and the end value of the VID Code, and each two adjacent references. The interval value between the voltage values is 0. 00625V, the allowable error range is (0, 0. 03) V, and the time interval of the input voltage of the CPU 40 corresponding to the two VID Codes is continuously tested, for example, 5 seconds. [0021] According to the start value or the end value and the interval value of the reference voltage values, the reference voltage value corresponding to each VID Code can be determined as 098121275 Form No. A0101 Page 6 of 17 201100816, if the VID Code is known as 0000001 0, the corresponding reference voltage value is 1.60000V, and the interval value is 0. 00625V, the value of the reference voltage corresponding to the VID Code of 000000 1 1 is (1.60000 - 0.00625) V, that is, 1. 59375V; The allowable error range is superimposed with the reference voltage value to obtain a range of allowable voltage values corresponding to each VID Code, such as the VID Code being 0000001 0, and the allowable error range is (0, 0.03) V, the reference voltage The value is 1.60000V, the allowable voltage range is (1. 60000, ❹ [0022] 1. 570000); if the time interval is 5 seconds, the data processing unit 14 reads the consecutive two VID Codes at intervals of 5 seconds. A2: The data processing unit 14 transmits a VID Code control signal to the VID Code encoding unit 16, and the VID Code control signal is automatically generated by the data processing unit 14 to sequentially read the VID Code and correspondingly generated. [0023] a3: The VID Code encoding unit 16 generates a VID Code signal according to the received VID Code control signal and transmits the VID Code signal to the PWM controller 20, and the PWM controller 20 outputs a pulse signal to a voltage according to the VID Code signal. The conversion circuit 30, the voltage conversion circuit 30 provides an input voltage to the CPU 40 according to the pulse signal. [0024] a4: The voltage detecting unit 12 detects the input voltage of the CPU 40 and outputs a total of ten detected voltage values, and the detected voltage value is ten of the input voltage of the CPU 40 in the time interval. The voltage value of the moment, the number of the detected voltage values of the group can be modified accordingly, but the detection voltage value of the group must be completely transmitted within the time interval, or the number of detected voltage values of the group Corresponding modifications are made along with the time interval so that the set of detected voltage values are all transmitted within the time interval. 098121275 Form No. A0101 Page 7 of 17 0982036181-0 201100816 [0025] a5: The data processing unit 14 receives the detected voltage value and determines whether each detected voltage value is within the allowable voltage value range. [0026] a6: If each detected voltage value is within the allowable voltage value range, continue to determine whether the VID Code control signal is the last VID Code control signal. [0027] a7: If the VID Code control signal is not the last VID Code control signal, the data processing unit 14 transmits the next VID Code control signal to the VID Code encoding unit 16, and returns to step a3. [0028] a8: if the VID Code control signal is the last commission VID Code control number', the data processing unit 14 outputs the test result in the form of an exe 1 form, and the test result can be displayed through the display of the electric system The test result includes the VID Code, the reference voltage value, the allowable voltage value range, the maximum value and the minimum value of the detection voltage value corresponding to each VID Code control signal, and the input voltage of the CPU corresponding to each VID Code control signal. The status is like "PASS". [0029] a9: If at least one detected voltage value is outside the allowable voltage value range, the data processing unit 14 reads the VID Code signal of the VID Code encoding unit 16.

[0〇3〇] alO: The data processing unit 14 pairs the VID Code signal with the VID

The vId Code corresponding to the Code control signal is compared to determine whether the two are the same. [0031] all: If the VID Code signal is the same as the VID Code, the data processing unit 14 records the voltage conversion circuit abnormality and proceeds to the step “卩. 098121275 Form No. A0101 Page 8/17 pages 09920 201100816 [0032] [0034] [0035]

[0036] Gal2: If the VID Code signal is different from the VID Code, the data processing unit 14 records that the VID Code signal is abnormal, that is, the USB data line is transmitted incorrectly. Al3: The data processing unit 14 stops outputting the VID Code control signal and receiving the detected voltage value. a 14 : outputting the test result in the form of exce 1 and displaying it through the display of the computer system; when the voltage conversion circuit is abnormal, the state of the input voltage of the CPU in the test result is represented by "Down Failed"; When the VID Code signal is abnormal, the state of the input voltage of the CPU in the test result is represented by "Code Failed". For ease of understanding, the following is an example to illustrate the test results, the VID Code, the reference voltage value, the maximum and minimum values of the allowable voltage range, the maximum and minimum values of the detected voltage value, and the input of the CPU. The corresponding relationship of the voltage states is shown in the following table: VID Code The reference voltage value allows the maximum value of the voltage range to allow the voltage to be embedded in the minimum value. The detection of the voltage value of the most human value is the smallest CPU-like value of the detected disk value. The state of the input voltage «κκ) 〇οιο 1.60000 1.60CK» Ϊ5Ί000 L5950 1.5826 PASS mmon 1.59375 1.59375 1.56375 1.6188 1.5987 Demi Failed mmmo 1 5S75@ L58750 1-55750 0.5178 0.5024 Code Failed [0037] Through the correspondence table of the above parameters, test The person can quickly see from the "state of the input voltage of the CPU" column whether the input voltage of the CPU 40 is normal. As shown in the above table, when the VID Code is 0000001 0, the corresponding reference voltage value is 1.60000V, because the preset allowable error range is (0 098121275 Form No. A0101 Page 9 / Total 17 Page 0982036181-0 201100816 ' 0.03) 'The reference voltage value is superposed with the allowable error range to obtain the allowable voltage value range (1.60000, 1. 57000) V corresponding to the VID Code, and the maximum and minimum values of the detected voltage value are respectively 1.5950 V and 1.5826V, so that the input state of the input voltage of the CPU is "PASS", and if any one of the maximum value and the minimum value of the detected voltage value exceeds the allowable voltage value range, then according to the VID Code Whether the signal is the same as the corresponding VID Code to determine the input state of the input voltage of the CPU 'If the VID Code signal is the same as the corresponding VID Code', then the input state of the input voltage of the CPU is "Down Failed" If the VID Code signal is different from the corresponding VID Code, the input state of the input sound of the CPU is "Code Failed". [0039] The data processing unit 14 may also be other circuit modules, as long as the data processing unit 14 is satisfied to output the VID Code control signal to the VID Code encoding unit 16 to generate and transmit the viD Code signal to the PWM control. To adjust the input voltage of the CPU 40, the data processing unit 14 receives the detected voltage value output by the voltage detecting unit 12, and is not limited to the computer system of the embodiment.

The cpu voltage test system and method of the present invention output a VID Code control signal through the data processing unit 14 to control the vid Code encoding unit 16 to transmit a VID Code signal to the PWM controller to adjust the input voltage of the CPU' and then the voltage. The detecting unit 12 detects the input voltage of the CPU and outputs a detected voltage value, and the data processing unit 14 receives the detected voltage value and determines whether to transmit according to whether the detected voltage value is within the allowable voltage value range. A VID Code control signal is given to the VID 098121275 Form No. A0101 Page 10/Total Page 0982036181-0 201100816

Code code single-chip, which automatically completes the test of the input voltage of the cpu, not only mentions the test efficiency, but also avoids the test result caused by human factors. [0040] In summary, the present invention meets the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and those who are familiar with the skill of the present invention are in accordance with the spirit of the present invention. Equivalent modifications or variations are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0041] FIG. 1 is a block diagram of a preferred embodiment of a cpu voltage test system of the present invention. 2 and 3 are flow diagrams of the preferred embodiment of the C P U voltage testing method of the present invention. Sense a L, ..::3⁄4 [Main component symbol description] CPU voltage test system 10 Voltage detection unit 12 Data processing unit 14; ^ VID. Code:: Volume first 16 PWM controller 20 Voltage conversion circuit 30 CPU 40 [0043] 〇 098121275 Form No. A0101 Page 11 of 17 0982036181-0

Claims (1)

201100816 VII. Patent application scope: 1 CPU voltage test system, including: - Voltage detection unit 'is used to detect the input voltage of a CPU and output at least one detection voltage value; - Data processing unit for receiving the detection Measuring the voltage value and determining whether the detected voltage value is within an allowable voltage range and for outputting a VID Code control signal; and - the VID Code encoding unit is configured to receive the VID Code control signal and output a VID Code signal to A PWM controller adjusts the turn-in voltage of the CPU. 2. The cpu voltage test system according to claim 1, wherein the VID Code control signal is generated according to a preset: ^]) Code. 3. The CPU voltage test system of claim 2, wherein the data processing unit is further configured to read the VID Code signal and determine the VID when the detected voltage value is outside the allowable voltage range. Whether the Code signal is the same as the vid Code corresponding to the VID Code control signal. 4. The CPU voltage test system according to claim 2, wherein the data processing unit is further configured to output a test result, where the test result includes a maximum value and a minimum value of the detected voltage value corresponding to the VID Code control signal. The value and the state of the input voltage of the CPU corresponding to the VID Code. 5. The cpu voltage test system according to claim 1, wherein the voltage detecting unit, the VID Code encoding unit and the data processing unit are connected through a USB data line or an RS-232C data line. 6. A CPU voltage test method, comprising the following steps: a. transmitting a VID Code control signal to a VID c〇de coding unit; 098121275 Form No. A0101 Page 12 of 17 0982036181-0 201100816 b. The VID Code The coding unit generates a VID Code signal according to the received VID Code control signal and transmits it to a PWM controller to adjust an input voltage of the CPU; c. detecting the input voltage of the CPU and outputting at least one detection voltage value d. Receiving the detected voltage value and determining whether the detected voltage value is within an allowable voltage value range, if the detected voltage value is within the allowable voltage value range Within 10, it is determined whether the VID Code control signal is the last one of the VID Code control signals corresponding to the plurality of preset VID Codes; and e. if the VID Code control signal is not the VID Code control signal corresponding to the VID Code The last * transmits the next VID Code control signal to the VID Code coding unit and returns to step b. The CPU voltage test method according to claim 6, wherein in the “step d”, if the detected voltage value is outside the allowable voltage value range, the VID Code signal is read and compared with The VID Code corresponding to the VID Code control signal is compared to determine whether the two are the same. If the same, the voltage conversion circuit is abnormal. If the VID Code signal is different from the VID Code, the VID Code signal is abnormal. The method for testing a CPU voltage according to claim 7, wherein the VID Code control signal is stopped after the VID Code signal is read and compared with the VID Code. And receiving the detected voltage value and outputting a test result. The CPU voltage test method according to claim 6, further comprising the step of: outputting a test result if the VID Code control signal is the last one of the VID Code control signals corresponding to the VID Code. For example, the CPU voltage test method described in claim 8 or 9 of the patent scope, 098121275 Form No. A0101 Page 13 of 17 0982036181-0 201100816 wherein the test result includes the detected voltage value corresponding to the VID Code control signal The maximum value and the minimum value, and the state of the input voltage of the CPU corresponding to the VID Code control signal. 098121275 Form No. A0101 Page 14 of 17 0982036181-0