CN102478871B - Self-powered boundary scanner and boundary scanning method thereof - Google Patents
Self-powered boundary scanner and boundary scanning method thereof Download PDFInfo
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- CN102478871B CN102478871B CN2010105580128A CN201010558012A CN102478871B CN 102478871 B CN102478871 B CN 102478871B CN 2010105580128 A CN2010105580128 A CN 2010105580128A CN 201010558012 A CN201010558012 A CN 201010558012A CN 102478871 B CN102478871 B CN 102478871B
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Abstract
The invention provides a self-powered boundary scanner and a boundary scanning method thereof. The scanner is used for regulating the output voltage to a mainboard to be tested under the control of a control platform and comprises a voltage output regulating module, an additional voltage regulating module and an analog/digital signal converting module, wherein the voltage output regulating module is used for regulating the output voltage by arranging a register through the control platform; the additional voltage regulating module is used for regulating the voltage output by the voltage output regulating module to a required voltage value and outputting the voltage value to the boundary scanner; and the analog/digital signal converting module is used for sampling the output voltage and feeding the sampled output voltage to the control platform. The method comprises the steps of: sending a voltage regulating instruction to the boundary scanner; judging whether the boundary scanner receives the voltage regulating instruction or not; if so, setting a register value to regulate the voltage and outputting the regulated voltage to the mainboard to be tested, and if not, alarming an error and stopping the boundary scanner; sending a voltage feedback reading instruction to the boundary scanner; reading the output voltage and feeding the output voltage back to the control platform; and displaying the fed-back voltage. According to the invention, different voltages can be simultaneously output to the mainboad to be tested, not only is the operation simple, but also the cost is low.
Description
Technical field
The present invention relates to a kind of devices and methods therefor of adjusting output voltage, relate in particular to self-powered boundary scan device and method thereof in a kind of JTAG of being applicable to agreement.
Background technology
JTAG (Joint Test Action Group, joint test behavior tissue) be a kind of international standard test protocol, by special-purpose jtag test instrument, utilize the chip internal node to be tested chip, the mainboard jtag test need carry out under open state now, between signal, can the phase mutual interference cause test result unreliable, as use external power supply to chip power supply to be measured, due to each chip operating voltage disunity, need external a plurality of voltage conversion circuits, connect complicated, easily make mistakes, and easy care not.
Summary of the invention
In view of above-mentioned purpose, the invention provides a kind of self-powered boundary scan device and method thereof, utilize microprocessor to complete output voltage and adjust function.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of self-powered jtag boundary scanner, it controls to adjust output voltage to mainboard to be measured by controlling platform, wherein, this self-powered jtag boundary scanner mainly comprises: the Voltage-output adjusting module arranges register to adjust output voltage by controlling platform; The auxiliary voltage adjusting module, be adjusted to the voltage of Voltage-output adjusting module output required magnitude of voltage and export mainboard to be measured to; And the analog/digital signal conversion module, the voltage through the output of auxiliary voltage adjusting module is sampled and fed back to the control platform, to assist the adjustment output voltage.
The present invention also provides a kind of method of supplying power to of self-powered boundary scan device, and it controls to adjust output voltage to mainboard to be measured by controlling platform, and wherein, the method mainly comprises the following steps:
Step a. sends voltage to the boundary scan device and adjusts instruction;
Step b. judges whether the boundary scan device receives voltage and adjust instruction;
If step c, arrange register value to adjust voltage, and export mainboard to be measured to, if not, report an error and stop;
Steps d. send and read the Voltage Feedback instruction to the boundary scan device;
Step e. reads the voltage that exports mainboard to be measured to and feeds back to the control platform;
Step f. shows the output voltage of feedback.
Preferably, the invention provides a kind of method of supplying power to of self-powered boundary scan device, wherein, also comprise step g between described step a and step b. the cyclic query port, the voltage received is adjusted to the instruction exclusive or check, if correct, write check is back to step b, if mistake, write check is returned and is continued the cyclic query port.
Preferably, the invention provides a kind of method of supplying power to of self-powered boundary scan device, wherein, also comprise step g between described steps d and step e. the cyclic query port, read Voltage Feedback instruction exclusive or check to what receive, if correct, write check is back to step e, if mistake, write check is returned and is continued the cyclic query port.
Compared to prior art, the invention provides a kind of self-powered boundary scan device and method thereof, utilize microprocessor to complete output voltage and adjust function, to export different voltage to mainboard to be measured simultaneously, not only simple to operate, and cost is low.
The accompanying drawing explanation
The block diagram that Fig. 1 is self-powered boundary scan device of the present invention
The process flow diagram of the method for supplying power to that Fig. 2 is self-powered boundary scan device of the present invention
Fig. 3 is write check process flow diagram of the present invention
Embodiment
Please refer to shown in Fig. 1, is the block diagram of self-powered boundary scan device of the present invention.Described self-powered boundary scan device 10 mainly comprises Voltage-output adjusting module 101, auxiliary voltage adjusting module 102 and analog/digital signal conversion module 103.
Wherein, described Voltage-output adjusting module 101 is controlling by the tester value that register is set on the platform (not shown), to change the Voltage-output dutycycle, thereby adjustment output voltage, again, auxiliary voltage adjusting module 102 is adjusted to required magnitude of voltage by the voltage of output in Voltage-output adjusting module 101 process, and export mainboard 20 to be measured to, in addition, 103 pairs of voltages through 102 outputs of auxiliary voltage adjusting module of described analog/digital signal conversion module are sampled, feed back and be shown in and control on platform, with subtest personnel control output voltage, and output voltage is made adjustment, to reach the purpose of output test required voltage.
Please refer to shown in Fig. 2 and Fig. 3 again, the invention provides a kind of method of supplying power to of self-powered boundary scan device, the method mainly comprises the following steps:
Step 201. starts;
The voltage that step 203. reading boundary scanner receives is adjusted instruction, makes exclusive or check and returns;
If step 205., the voltage after the output adjustment, to mainboard to be measured, sends and reads the Voltage Feedback instruction to the boundary scan device;
The Voltage Feedback instruction that step 207. reading boundary scanner receives, make exclusive or check and return;
Step 210. is in controlling the output voltage that shows feedback on platform;
Wherein, then please refer to shown in Fig. 3, further comprising the steps of between described step 202 and step 211:
Step 301. cyclic query port;
The instruction exclusive or check that step 302. pair receives, judge whether correct;
If step 303. mistake, write check is back to step 301 continuation inquiry port;
If step 304. is correct, write check is returned;
The instruction that step 305. judgement receives is that voltage is adjusted instruction or reads the Voltage Feedback instruction;
If step 306. voltage is adjusted instruction, settings are write in register, to adjust output voltage to mainboard to be measured, return to step 301, continue the inquiry port, until finish;
If step 307. reads the Voltage Feedback instruction, export the feedback voltage read to the control platform after analog/digital conversion, return to step 301, continue the inquiry port, until finish.
Claims (4)
1. a self-powered boundary scan device, it controls to adjust output voltage to mainboard to be measured by controlling platform, it is characterized in that, and this self-powered boundary scan device mainly comprises:
The Voltage-output adjusting module, arrange register to adjust output voltage by controlling platform;
The auxiliary voltage adjusting module, be adjusted to the voltage of Voltage-output adjusting module output required magnitude of voltage and export mainboard to be measured to; And
The analog/digital signal conversion module, sampled and fed back to the control platform the voltage through the output of auxiliary voltage adjusting module, to assist the adjustment output voltage.
2. the method for supplying power to of a self-powered boundary scan device, it controls to adjust output voltage to mainboard to be measured by controlling platform, it is characterized in that, and the method mainly comprises the following steps:
Step a. sends voltage to the boundary scan device and adjusts instruction;
Step b. judges whether the boundary scan device receives voltage and adjust instruction;
If step c, arrange register value to adjust voltage, and export mainboard to be measured to, if not, report an error and stop;
Steps d. send and read the Voltage Feedback instruction to the boundary scan device;
Step e. reads the voltage that exports mainboard to be measured to and feeds back to the control platform;
Step f. shows the output voltage of feedback.
3. the method for supplying power to of self-powered boundary scan device according to claim 2, is characterized in that, between described step a and step b, also comprises:
Step g. the cyclic query port, the voltage that receives is adjusted to the instruction exclusive or check, if correct, write check is back to step b, if mistake, write check is returned and is continued the cyclic query port.
4. the method for supplying power to of self-powered boundary scan device according to claim 2, is characterized in that, between described steps d and step e, also comprises:
Step h. cyclic query port, read Voltage Feedback instruction exclusive or check to what receive, if correct, write check is back to step e, if mistake, write check is returned and continued the cyclic query port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105580128A CN102478871B (en) | 2010-11-25 | 2010-11-25 | Self-powered boundary scanner and boundary scanning method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105580128A CN102478871B (en) | 2010-11-25 | 2010-11-25 | Self-powered boundary scanner and boundary scanning method thereof |
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| Publication Number | Publication Date |
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| CN102478871A CN102478871A (en) | 2012-05-30 |
| CN102478871B true CN102478871B (en) | 2013-12-04 |
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| CN2010105580128A Expired - Fee Related CN102478871B (en) | 2010-11-25 | 2010-11-25 | Self-powered boundary scanner and boundary scanning method thereof |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698692B (en) * | 2013-12-31 | 2016-09-14 | 工业和信息化部电子第五研究所 | TDDB early warning failure circuit |
| CN109507472B (en) * | 2017-09-14 | 2021-03-26 | 佛山市顺德区顺达电脑厂有限公司 | Voltage detection method of memory test module |
| CN109901042B (en) * | 2017-12-07 | 2024-03-29 | 英业达科技有限公司 | JTAG control device using USB and having voltage adjustable function and method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2879522Y (en) * | 2006-03-10 | 2007-03-14 | 北京工业大学 | Industrial intelligent stabilized voltage-regulator |
| CN201134094Y (en) * | 2007-12-28 | 2008-10-15 | 英业达股份有限公司 | Testing device of voltage limit |
| US7501801B2 (en) * | 2005-06-30 | 2009-03-10 | Potentia Semiconductor Inc. | Power supply output voltage trimming |
| CN101674007A (en) * | 2009-10-20 | 2010-03-17 | 华为技术有限公司 | Power supply device |
| CN101881808A (en) * | 2010-06-28 | 2010-11-10 | 陕西科技大学 | Organic electroluminescent diode service life tester |
-
2010
- 2010-11-25 CN CN2010105580128A patent/CN102478871B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7501801B2 (en) * | 2005-06-30 | 2009-03-10 | Potentia Semiconductor Inc. | Power supply output voltage trimming |
| CN2879522Y (en) * | 2006-03-10 | 2007-03-14 | 北京工业大学 | Industrial intelligent stabilized voltage-regulator |
| CN201134094Y (en) * | 2007-12-28 | 2008-10-15 | 英业达股份有限公司 | Testing device of voltage limit |
| CN101674007A (en) * | 2009-10-20 | 2010-03-17 | 华为技术有限公司 | Power supply device |
| CN101881808A (en) * | 2010-06-28 | 2010-11-10 | 陕西科技大学 | Organic electroluminescent diode service life tester |
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