CN102722109A - Regulating device for high-speed interface terminal load - Google Patents
Regulating device for high-speed interface terminal load Download PDFInfo
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- CN102722109A CN102722109A CN2012101615061A CN201210161506A CN102722109A CN 102722109 A CN102722109 A CN 102722109A CN 2012101615061 A CN2012101615061 A CN 2012101615061A CN 201210161506 A CN201210161506 A CN 201210161506A CN 102722109 A CN102722109 A CN 102722109A
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- circuit
- speed interface
- regulating device
- interface terminal
- auto
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Abstract
The invention discloses a regulating device for a high-speed interface terminal load. The regulating device comprises a signal receiving terminal, an automatic regulating circuit and a protection circuit. The signal receiving terminal is electrically connected with the automatic regulating circuit, the protection circuit is connected with the automatic regulating circuit in parallel, the automatic regulating circuit comprises a control circuit, a switch circuit, an adjustable resistor circuit, a termination circuit and an amplification comparison circuit, the control circuit is respectively in electrical connection with the switch circuit, the adjustable resistor circuit and the termination circuit, and the amplification circuit is connected with the adjustable resistor circuit in parallel. According to the above mode, the regulating device for the high-speed interface terminal load, provided by the invention, can improve the sensitivity and the accuracy of system signal receiving of a high-speed interface.
Description
Technical field
The present invention relates to electronic circuit field, particularly relate to a kind of regulating device of loaded at high-speed interface terminal.
Background technology
General electron device all has pin or port, and the connection side between the device is to realize through the metallic cable of metal wire on the multilayer circuit board or separation.The signal transmission can be one or more ports, and aspect can be single or difference modes.Signal for two-forty transmits, and must use the terminator of coupling, reflects the loss of signal that causes and the noise that brings thus to reduce.To the accurate control of terminator of coupling, then be the key that guarantees data transmission rate.The change of environment, manufacture process for example, voltage, the change of temperature also can change terminal port build-out resistor value usually.Like this, when environmental factor changed, we need keep the resistance of terminal resistance.Usually the method for adjustment build-out resistor is with a non-essential resistance as a reference, keeps termination resistance value.But external resistor needs device to add pin in addition.The pin that other adds has been wasted available space, has increased device cost.In addition, even terminal resistance is maintained at a selectable value with a kind of mode of the unknown, the resistance value of transmission also can owing to transmission signal frequency and the change of project organization change.Therefore, even termination resistance value remains on selectable value, not matching between the resistance value of termination resistance value and transmission also can exist.Perhaps, not matching between the resistance value of termination resistance value and transmission line can cause the degeneration of terminal acknowledge(ment) signal, or causes difficulty or mistake in the terminal signaling detection.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of regulating device of loaded at high-speed interface terminal, can improve the sensitivity and the degree of accuracy of high-speed interface receiving system signal.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: the regulating device that a kind of loaded at high-speed interface terminal is provided; Comprise: reception signal terminal, auto-adjusting circuit and holding circuit; Said reception signal terminal and auto-adjusting circuit electrically connect, and said holding circuit is parallelly connected with auto-adjusting circuit, and said auto-adjusting circuit comprises control circuit, on-off circuit, adjustable resistance circuit, termination circuit and amplification comparator circuit; Said control circuit electrically connects respectively at on-off circuit, adjustable resistance circuit and termination circuit, and said amplification comparator circuit is parallelly connected with the adjustable resistance circuit.
In preferred embodiment of the present invention, also be electrically connected with testing circuit on the said auto-adjusting circuit, said testing circuit and holding circuit electrically connect.
In preferred embodiment of the present invention, said adjustable resistance circuit is a plurality of adjustable resistance arrays.
In preferred embodiment of the present invention, said reception signal terminal is connected with control circuit.
In preferred embodiment of the present invention, be connected with memory circuit on the said amplification comparator circuit.
The invention has the beneficial effects as follows: the regulating device of loaded at high-speed interface terminal of the present invention can improve the sensitivity and the degree of accuracy of high-speed interface receiving system signal.
Description of drawings
Fig. 1 is the structural representation of regulating device one preferred embodiment of loaded at high-speed interface terminal of the present invention;
The mark of each parts is following in the accompanying drawing: 1, reception signal terminal, 2, auto-adjusting circuit, 3, holding circuit, 4, control circuit; 5, on-off circuit, 6, the adjustable resistance circuit, 7, termination circuit; 8, amplify comparator circuit, 9, testing circuit, 10, memory circuit.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is set forth in detail, thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
See also Fig. 1; A kind of regulating device of loaded at high-speed interface terminal; Comprise: reception signal terminal 1, auto-adjusting circuit 2 and holding circuit 3; Said reception signal terminal 1 electrically connects with auto-adjusting circuit 2, and said holding circuit 3 is parallelly connected with auto-adjusting circuit 2, and said auto-adjusting circuit 2 comprises control circuit 4, on-off circuit 5, adjustable resistance circuit 6, termination circuit 7 and amplifies comparator circuit 8; Said control circuit 4 electrically connects respectively at on-off circuit 5, adjustable resistance circuit 6 and termination circuit 7, and said amplification comparator circuit 8 is parallelly connected with adjustable resistance circuit 6.
In addition, also be electrically connected with testing circuit 9 on the said auto-adjusting circuit 2, said testing circuit and holding circuit electrically connect.
In addition, said adjustable resistance circuit 6 is a plurality of adjustable resistance arrays.
In addition, said reception signal terminal 1 is connected with control circuit 4.
In addition, be connected with memory circuit 10 on the said amplification comparator circuit 8.
Be different from prior art, the regulating device of loaded at high-speed interface terminal of the present invention can improve the sensitivity and the degree of accuracy of high-speed interface receiving system signal.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (5)
1. the regulating device of a loaded at high-speed interface terminal; It is characterized in that; Comprise: reception signal terminal, auto-adjusting circuit and holding circuit; Said reception signal terminal and auto-adjusting circuit electrically connect, and said holding circuit is parallelly connected with auto-adjusting circuit, and said auto-adjusting circuit comprises control circuit, on-off circuit, adjustable resistance circuit, termination circuit and amplification comparator circuit; Said control circuit electrically connects respectively at on-off circuit, adjustable resistance circuit and termination circuit, and said amplification comparator circuit is parallelly connected with the adjustable resistance circuit.
2. the regulating device of loaded at high-speed interface terminal according to claim 1 is characterized in that, also is electrically connected with testing circuit on the said auto-adjusting circuit, and said testing circuit and holding circuit electrically connect.
3. the regulating device of loaded at high-speed interface terminal according to claim 1 is characterized in that, said adjustable resistance circuit is a plurality of adjustable resistance arrays.
4. the regulating device of loaded at high-speed interface terminal according to claim 1 is characterized in that, said reception signal terminal is connected with control circuit.
5. the regulating device of loaded at high-speed interface terminal according to claim 1 is characterized in that, is connected with memory circuit on the said amplification comparator circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101615061A CN102722109A (en) | 2012-05-23 | 2012-05-23 | Regulating device for high-speed interface terminal load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101615061A CN102722109A (en) | 2012-05-23 | 2012-05-23 | Regulating device for high-speed interface terminal load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102722109A true CN102722109A (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101615061A Pending CN102722109A (en) | 2012-05-23 | 2012-05-23 | Regulating device for high-speed interface terminal load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102722109A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026456A (en) * | 1995-12-15 | 2000-02-15 | Intel Corporation | System utilizing distributed on-chip termination |
| CN1466836A (en) * | 2000-07-27 | 2004-01-07 | 莱恩克实验股份有限公司 | Data transmission equipment and method |
| US20040004494A1 (en) * | 2002-07-05 | 2004-01-08 | Song Ho-Young | Semiconductor integrated circuit with termination circuit |
| US7102381B2 (en) * | 2004-06-29 | 2006-09-05 | Intel Corporation | Adaptive termination for optimum signal detection |
| KR20070023457A (en) * | 2005-08-24 | 2007-02-28 | 삼성전자주식회사 | High speed test data generator capable of inserting noise and automatic test system using the same |
| CN101483646A (en) * | 2009-01-22 | 2009-07-15 | 浙江大学 | Method and interface for high-speed communication on bus |
| CN101521638A (en) * | 2008-02-25 | 2009-09-02 | 陈�峰 | Automatic tracking optimization device loaded at high-speed interface terminal |
| CN201975076U (en) * | 2009-08-07 | 2011-09-14 | 天津威磊电子技术有限公司 | Universal serial bus (USB) universal programming device |
| CN202649725U (en) * | 2012-05-23 | 2013-01-02 | 常州芯奇微电子科技有限公司 | Adjusting device for high-speed interface terminal load |
-
2012
- 2012-05-23 CN CN2012101615061A patent/CN102722109A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026456A (en) * | 1995-12-15 | 2000-02-15 | Intel Corporation | System utilizing distributed on-chip termination |
| CN1466836A (en) * | 2000-07-27 | 2004-01-07 | 莱恩克实验股份有限公司 | Data transmission equipment and method |
| US20040004494A1 (en) * | 2002-07-05 | 2004-01-08 | Song Ho-Young | Semiconductor integrated circuit with termination circuit |
| US7102381B2 (en) * | 2004-06-29 | 2006-09-05 | Intel Corporation | Adaptive termination for optimum signal detection |
| KR20070023457A (en) * | 2005-08-24 | 2007-02-28 | 삼성전자주식회사 | High speed test data generator capable of inserting noise and automatic test system using the same |
| CN101521638A (en) * | 2008-02-25 | 2009-09-02 | 陈�峰 | Automatic tracking optimization device loaded at high-speed interface terminal |
| CN101483646A (en) * | 2009-01-22 | 2009-07-15 | 浙江大学 | Method and interface for high-speed communication on bus |
| CN201975076U (en) * | 2009-08-07 | 2011-09-14 | 天津威磊电子技术有限公司 | Universal serial bus (USB) universal programming device |
| CN202649725U (en) * | 2012-05-23 | 2013-01-02 | 常州芯奇微电子科技有限公司 | Adjusting device for high-speed interface terminal load |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |