CN102478871A - 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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- CN102478871A CN102478871A CN2010105580128A CN201010558012A CN102478871A CN 102478871 A CN102478871 A CN 102478871A CN 2010105580128 A CN2010105580128 A CN 2010105580128A CN 201010558012 A CN201010558012 A CN 201010558012A CN 102478871 A CN102478871 A CN 102478871A
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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) is a kind of international standard test protocol, and the jtag test instrument through special use utilizes the chip internal node that chip is tested; The mainboard jtag test needs under open state, to carry out now, can the phase mutual interference cause test result unreliable between signal, as using external power supply to chip power supply to be measured; Because each chip operating voltage disunity needs external a plurality of voltage conversion circuits, complex connection; Easy error, 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 accomplish output voltage adjustment 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 is controlled with the adjustment output voltage to mainboard to be measured through the control platform; Wherein, this self-powered jtag boundary scanner mainly comprises: voltage output adjusting module is provided with register with the adjustment output voltage through the control platform; The auxiliary voltage adjusting module, the voltage of voltage being exported adjusting module output is adjusted to required magnitude of voltage and exports mainboard to be measured to; And the analog/digital signal conversion module, to sampling through the voltage of auxiliary voltage adjusting module output and feeding back to the control platform, with auxiliary adjustment output voltage.
The present invention also provides a kind of method of supplying power to of self-powered boundary scan device, and to adjust output voltage to mainboard to be measured, wherein, this method mainly may further comprise the steps through the control of control platform for it:
Step a. sends voltage adjustment instruction to the boundary scan device;
Step b. judges whether the boundary scan device receives voltage adjustment instruction;
If step c then is provided with register value with adjustment voltage, and exports mainboard to be measured to, if not, then reporting an error stops;
Steps d. read the Voltage Feedback instruction to the transmission of 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.
Preferable, the invention provides a kind of method of supplying power to of self-powered boundary scan device, wherein; Also comprise step g between said step a and the step b. the cyclic query port; To the voltage adjustment instruction exclusive or check that receives, if correct, then write check is back to step b; If mistake, then write check is returned and is continued the cyclic query port.
Preferable, the invention provides a kind of method of supplying power to of self-powered boundary scan device, wherein; Also comprise step g between said steps d and the step e. the cyclic query port; Read Voltage Feedback instruction exclusive or check to what receive, if correct, then write check is back to step e; If mistake, then 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 accomplish output voltage adjustment function, not only simple to operate to export different voltages with different to mainboard to be measured simultaneously, and cost is low.
Description of drawings
Fig. 1 is the block diagram of self-powered boundary scan device according to the invention
Fig. 2 is the process flow diagram of the method for supplying power to of self-powered boundary scan device according to the invention
Fig. 3 is a write check process flow diagram of the present invention
Embodiment
Please, be the block diagram of self-powered boundary scan device according to the invention with reference to shown in Figure 1.Said 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, said voltage output adjusting module 101 is being controlled the value that register is set on the platform (not shown) through the tester, to change the voltage output duty cycle; Thereby the adjustment output voltage, again, auxiliary voltage adjusting module 102 is exported voltage the voltage of output in the adjusting module 101 through being adjusted to required magnitude of voltage; And export mainboard 20 to be measured to, in addition, 103 pairs of voltages through 102 outputs of auxiliary voltage adjusting module of said analog/digital signal conversion module are sampled; Feedback also is shown on the control platform; With subtest personnel control output voltage, and output voltage made adjustment, to reach the purpose of output test required voltage.
Please with reference to Fig. 2 and shown in Figure 3, the invention provides a kind of method of supplying power to of self-powered boundary scan device again, this method mainly may further comprise the steps:
Step 201. beginning;
Step 202. is sent voltage adjustment instruction to the boundary scan device;
Step 203. reads the voltage adjustment instruction that the boundary scan device receives, and makes exclusive or check and returns;
Step 204. judges whether the boundary scan device receives voltage adjustment instruction;
If step 205. is then exported adjusted voltage to mainboard to be measured, read the Voltage Feedback instruction to the transmission of boundary scan device;
Step 206. if not, then reporting an error stops;
Step 207. reads the Voltage Feedback instruction that the boundary scan device receives, and makes exclusive or check and returns;
Step 208. is judged whether the boundary scan device receives and is read Voltage Feedback instruction;
Step 209. reads the voltage that exports mainboard to be measured to and feeds back to the control platform;
Step 210. shows the output voltage of feedback on the control platform;
Step 211. finishes.
Wherein, please with reference to shown in Figure 3, further comprising the steps of between said step 202 and the step 211 again:
Step 301. cyclic query port;
The step 302. pair instruction exclusive or check that receives judges whether correct;
If step 304. is correct, and then write check is returned;
Step 305. judges that the instruction that receives is voltage adjustment instruction or reads the Voltage Feedback instruction;
If step 306. voltage adjustment instruction then writes settings in the register, to mainboard to be measured, return step 301 with the adjustment output voltage, continue the inquiry port, until end;
If step 307. reads the Voltage Feedback instruction, after analog/digital conversion, export the feedback voltage that reads to the control platform, return step 301, continue the inquiry port, until end.
Claims (4)
1. self-powered boundary scan device, its through the control of control platform with the adjustment output voltage to mainboard to be measured, it is characterized in that this self-powered boundary scan device mainly comprises:
Voltage output adjusting module is provided with register with the adjustment output voltage through the control platform;
The auxiliary voltage adjusting module, the voltage of voltage being exported adjusting module output is adjusted to required magnitude of voltage and exports mainboard to be measured to; And
The analog/digital signal conversion module is to sampling through the voltage of auxiliary voltage adjusting module output and feeding back to the control platform, with auxiliary adjustment output voltage.
2. the method for supplying power to of a self-powered boundary scan device, its through the control of control platform with the adjustment output voltage to mainboard to be measured, it is characterized in that this method mainly may further comprise the steps:
Step a. sends voltage adjustment instruction to the boundary scan device;
Step b. judges whether the boundary scan device receives voltage adjustment instruction;
If step c then is provided with register value with adjustment voltage, and exports mainboard to be measured to, if not, then reporting an error stops;
Steps d. read the Voltage Feedback instruction to the transmission of 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, also comprises between said step a and the step b:
Step g. the cyclic query port, to the voltage that receives adjustment instruction exclusive or check, if correct, then 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, also comprises between said steps d and the step e:
Step h. cyclic query port reads Voltage Feedback instruction exclusive or check to what receive, if correct, then write check is back to step e, if mistake, then 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102478871A true CN102478871A (en) | 2012-05-30 |
| CN102478871B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698692A (en) * | 2013-12-31 | 2014-04-02 | 工业和信息化部电子第五研究所 | TDDB (time dependent dielectric breakdown) failure early warning circuit |
| CN109507472A (en) * | 2017-09-14 | 2019-03-22 | 佛山市顺德区顺达电脑厂有限公司 | The voltage detection method of memory test module |
| CN109901042A (en) * | 2017-12-07 | 2019-06-18 | 英业达科技有限公司 | Use USB and the JTAG control device and its method of tool voltage adjustable function |
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| 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 |
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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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698692A (en) * | 2013-12-31 | 2014-04-02 | 工业和信息化部电子第五研究所 | TDDB (time dependent dielectric breakdown) failure early warning circuit |
| 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 |
| CN109507472A (en) * | 2017-09-14 | 2019-03-22 | 佛山市顺德区顺达电脑厂有限公司 | The voltage detection method of memory test module |
| CN109901042A (en) * | 2017-12-07 | 2019-06-18 | 英业达科技有限公司 | Use USB and the JTAG control device and its method of tool voltage adjustable function |
| 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 |
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| Publication number | Publication date |
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| CN102478871B (en) | 2013-12-04 |
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