CN104486270A - Method and device for obtaining pre-emphasis equilibrium value of worst case - Google Patents
Method and device for obtaining pre-emphasis equilibrium value of worst case Download PDFInfo
- Publication number
- CN104486270A CN104486270A CN201410510314.6A CN201410510314A CN104486270A CN 104486270 A CN104486270 A CN 104486270A CN 201410510314 A CN201410510314 A CN 201410510314A CN 104486270 A CN104486270 A CN 104486270A
- Authority
- CN
- China
- Prior art keywords
- parameter
- passage
- preemphasis
- worst condition
- equilibrium value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention provides a method and device for obtaining a pre-emphasis equilibrium value of the worst case. The method comprises the following steps: establishing a channel S parameter model, and setting different values to temperature coefficients and humidity coefficients and carrying out combination scanning on the different values to generate different channel S parameters; constructing link simulation, loading temperature coefficients and humidity coefficients at the sending end and the receiving end of a link and obtaining corresponding channel S parameters of the link according to the combination of the different values of the temperature coefficients and humidity coefficients; and according to the channel S parameters, scanning simulation results, determining the worst case of the simulation results, and obtaining the pre-emphasis equilibrium value of the worst case. According to the method and device, the pre-emphasis equilibrium value of the worst case can be obtained automatically, and thus the risk of system halt in the high temperature and high voltage test can be prevented.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and apparatus obtaining the preemphasis equilibrium value of worst condition.
Background technology
Along with the continuous increase of signal rate, the nonlinear characteristics such as the crosstalk in transmission line and loss have important impact to signal integrity and sequential, and a common phenomenon is exactly intersymbol interference (ISI, InterSymbol Interference).Equilibrium produces to address these problems.Common equalizer has: continuous time linear equalizer (CTLE, Continuous time linear equaliztion), Discrete Linear equalizer (DLE, Discrete linear equaliztion), decision feedback equalizer (DFE, DecisionFeedback Equalizer).
Equilibrium value majority is adaptive, but receiving terminal continuous time linear equalizer CTLE some be not adaptive, need emulation to obtain.The way of present majority design obtains the pre-add weight values of, this value obtained is again by basic input output system (BIOS, Basic InputOutput System) program is loaded in chip, plays signal compensation effect.But equilibrium value is not optimized, so may can run under normal conditions, but will demotes under the state of HTHP, cannot normally work.At this moment, testing software link system machine may be needed to be optimized equilibrium value, this process optimized also is more loaded down with trivial details.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of method and apparatus obtaining the preemphasis equilibrium value of worst condition, can the preemphasis equilibrium value of automatic acquisition road worst condition, thus the risk that crashes in HTHP test can be prevented.
In order to reach the object of the invention, the invention provides a kind of method obtaining the preemphasis equilibrium value of worst condition, comprise: set up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter; Build link simulation, load temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient; According to passage S parameter, scanning simulation result, determines the worst condition in simulation result, obtains the preemphasis equilibrium value of this worst condition.
Further, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, after producing different passage S parameter, also comprising: by passage S parameter corresponding different with the different value combination of humidity coefficient for temperature coefficient.
Further, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient, comprising: according to the different value combination of temperature coefficient and humidity coefficient, set up the passage S parameter of various combination at the transmitting terminal of link and receiving terminal; Described passage S parameter comprises via hole S parameter model, transmission line S parameter model, connector S parameter model.
Further, after obtaining the preemphasis equilibrium value of this worst condition, also comprise: by basic input output system Bios, the preemphasis equilibrium value of worst condition is loaded in chip, carries out signal compensation.
Obtain a device for the preemphasis equilibrium value of worst condition, comprising: set up unit, for setting up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter; Building unit, for building link simulation, loading temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient; Acquiring unit, for according to passage S parameter, scans simulation result, determines the worst condition in simulation result, obtain the preemphasis equilibrium value of this worst condition.
Further, set up unit, also for temperature coefficient is combined corresponding different passage S parameter with the different value of humidity coefficient.
Further, also comprising: loading unit, for the preemphasis equilibrium value of worst condition being loaded in chip by basic input output system Bios, carrying out signal compensation.
Compared with prior art, the present invention includes: set up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter; Build link simulation, load temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient; According to passage S parameter, scanning simulation result, determines the worst condition in simulation result, obtains the preemphasis equilibrium value of this worst condition.The present invention, by dynamic emulation mode, can realize the preemphasis equilibrium value of automatic acquisition worst condition, thus can prevent the risk in HTHP test deadlock, if also save the not all right time needing test optimization preemphasis equilibrium value simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention obtains the method for the preemphasis equilibrium value of worst condition.
Fig. 2 is the schematic diagram of temperature and humidity of the present invention to chip material parameter influence.
The schematic diagram of Fig. 3 to be the present invention at the transmitting terminal of link and receiving terminal set up passage S parameter of various combination.
Fig. 4 is the schematic diagram that the present invention carries out simulation scanning.
Fig. 5 is the schematic diagram of simulation scanning result of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.By these exemplifying embodiments of enough detailed description, those skilled in the art are made to put into practice the present invention.Without departing from the spirit and scope in the present invention, can to implement to make logic, realize and other change.
Fig. 1 is the schematic flow sheet that the present invention obtains the method for the preemphasis equilibrium value of worst condition, as shown in Figure 1, specifically can comprise:
Step 11, sets up passage S parameter model, carrying out array sweeping, producing different passage S parameter by arranging different value to temperature coefficient and humidity coefficient.
Because temperature humidity is on the impact of chip material, can pre-set parametric variable, in the present invention, this parametric variable comprises temperature coefficient and humidity coefficient.As shown in Figure 2, can reflect that temperature and humidity is to chip material parameter influence.
According to certain variable quantity, different value is arranged to temperature coefficient and humidity coefficient and carries out array sweeping, different passage S parameter can be obtained.Such as, temperature from 40 degree, often can increase by 5 degree of run-downs, to 80 degree of end; Humidity can scan from 10%, often increases by 20% run-down, terminates to 80%.
So, the passage S parameter that temperature coefficient is corresponding different with the different value combination of humidity coefficient.
Step 12, builds link simulation, loads temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtains the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient.
Can as shown in Figure 3, set up the passage S parameter of various combination at the transmitting terminal of link and receiving terminal, such as via hole S parameter model, transmission line S parameter model, connector S parameter model etc.
Step 13, according to passage S parameter, scanning simulation result, determines the worst condition in simulation result, obtains the preemphasis equilibrium value of this worst condition.
Can shown in reference diagram 4, can all parameters related to be added in scanning imaging system, chip itself also adds temperature coefficient and humidity coefficient, and the different value combination of temperature coefficient and humidity coefficient can call corresponding passage S parameter, carries out scanning and obtains simulation result.
Can shown in reference diagram 5, determine worst condition in simulation result and put forward high for the data of worst condition.By this simulation result, the preemphasis equilibrium value getting worst condition that can be intuitively succinct.
Step 14, is loaded into the preemphasis equilibrium value of worst condition in chip by Bios, carries out signal compensation.
The present invention, by dynamic emulation mode, can realize the preemphasis equilibrium value of automatic acquisition worst condition, thus can prevent the risk in HTHP test deadlock, if also save the not all right time needing test optimization preemphasis equilibrium value simultaneously.
The device that the present invention obtains the preemphasis equilibrium value of worst condition specifically can comprise:
Set up unit, for setting up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter;
Building unit, for building link simulation, loading temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient;
Acquiring unit, for according to passage S parameter, scans simulation result, determines the worst condition in simulation result, obtain the preemphasis equilibrium value of this worst condition;
Loading unit, is loaded into the preemphasis equilibrium value of worst condition in chip for Bios, carries out signal compensation.
The device of preemphasis equilibrium value obtaining worst condition be with the preemphasis equilibrium value method of acquisition worst condition corresponding, therefore, the concrete details that realizes referring to the method for preemphasis equilibrium value obtaining worst condition, can be not repeated herein.
The present invention, by dynamic emulation mode, can realize the preemphasis equilibrium value of automatic acquisition worst condition, thus can prevent the risk in HTHP test deadlock, if also save the not all right time needing test optimization preemphasis equilibrium value simultaneously.
Be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility execution mode of the present invention; they are not for limiting the scope of the invention, all do not depart from equivalent implementations that skill of the present invention spirit does or change all should be included within protection scope of the present invention.
Claims (7)
1. obtain a method for the preemphasis equilibrium value of worst condition, it is characterized in that, comprising:
Set up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter;
Build link simulation, load temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient;
According to passage S parameter, scanning simulation result, determines the worst condition in simulation result, obtains the preemphasis equilibrium value of this worst condition.
2. the method for the preemphasis equilibrium value of acquisition worst condition according to claim 1, is characterized in that, describedly carries out array sweeping by arranging different value to temperature coefficient and humidity coefficient, after producing different passage S parameter, also comprises:
By passage S parameter corresponding different with the different value combination of humidity coefficient for temperature coefficient.
3. the method for the preemphasis equilibrium value of acquisition worst condition according to claim 1 and 2, is characterized in that, the described combination of the different value according to temperature coefficient and humidity coefficient obtains the passage S parameter of the correspondence of link, comprising:
According to the different value combination of temperature coefficient and humidity coefficient, set up the passage S parameter of various combination at the transmitting terminal of link and receiving terminal;
Described passage S parameter comprises via hole S parameter model, transmission line S parameter model, connector S parameter model.
4. the method for the preemphasis equilibrium value of acquisition worst condition according to claim 1, is characterized in that, after the preemphasis equilibrium value of described this worst condition of acquisition, also comprises:
By basic input output system Bios, the preemphasis equilibrium value of worst condition is loaded in chip, carries out signal compensation.
5. obtain a device for the preemphasis equilibrium value of worst condition, it is characterized in that, comprising:
Set up unit, for setting up passage S parameter model, carrying out array sweeping by arranging different value to temperature coefficient and humidity coefficient, producing different passage S parameter;
Building unit, for building link simulation, loading temperature coefficient and humidity coefficient at the transmitting terminal of link and receiving terminal, obtain the passage S parameter of the correspondence of link according to the different value combination of temperature coefficient and humidity coefficient;
Acquiring unit, for according to passage S parameter, scans simulation result, determines the worst condition in simulation result, obtain the preemphasis equilibrium value of this worst condition.
6. the device of the preemphasis equilibrium value of acquisition worst condition according to claim 5, is characterized in that, describedly sets up unit, also for by passage S parameter corresponding different with the different value combination of humidity coefficient for temperature coefficient.
7. the device of the preemphasis equilibrium value of acquisition worst condition according to claim 5, it is characterized in that, also comprising: loading unit, for the preemphasis equilibrium value of worst condition being loaded in chip by basic input output system Bios, carrying out signal compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510314.6A CN104486270A (en) | 2014-09-28 | 2014-09-28 | Method and device for obtaining pre-emphasis equilibrium value of worst case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410510314.6A CN104486270A (en) | 2014-09-28 | 2014-09-28 | Method and device for obtaining pre-emphasis equilibrium value of worst case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104486270A true CN104486270A (en) | 2015-04-01 |
Family
ID=52760775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410510314.6A Pending CN104486270A (en) | 2014-09-28 | 2014-09-28 | Method and device for obtaining pre-emphasis equilibrium value of worst case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104486270A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635007A (en) * | 2016-01-25 | 2016-06-01 | 浪潮(北京)电子信息产业有限公司 | Optimal equilibrium value setting method and system |
| CN105656822A (en) * | 2016-01-25 | 2016-06-08 | 浪潮(北京)电子信息产业有限公司 | Optimal equilibrium value setting method and system |
| CN109257094A (en) * | 2018-11-01 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of the pre-add weight values obtaining value method and device of the transmitter that serially unstrings |
| CN110377971A (en) * | 2019-06-27 | 2019-10-25 | 苏州浪潮智能科技有限公司 | A kind of chip drives EQ value optimal value determines method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060067387A1 (en) * | 2004-09-30 | 2006-03-30 | Ahmed Ali U | Transmit adaptive equalization using ordered sets |
| CN101330299A (en) * | 2007-06-20 | 2008-12-24 | 英业达股份有限公司 | Method for manufacturing transmission line equalizer |
| US7693691B1 (en) * | 2006-02-01 | 2010-04-06 | Altera Corporation | Systems and methods for simulating link performance |
| CN104184617A (en) * | 2014-08-12 | 2014-12-03 | 福建星网锐捷网络有限公司 | Method, device and system for configuring pre-emphasis for interconnection equipment and network device |
-
2014
- 2014-09-28 CN CN201410510314.6A patent/CN104486270A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060067387A1 (en) * | 2004-09-30 | 2006-03-30 | Ahmed Ali U | Transmit adaptive equalization using ordered sets |
| US7693691B1 (en) * | 2006-02-01 | 2010-04-06 | Altera Corporation | Systems and methods for simulating link performance |
| CN101330299A (en) * | 2007-06-20 | 2008-12-24 | 英业达股份有限公司 | Method for manufacturing transmission line equalizer |
| CN104184617A (en) * | 2014-08-12 | 2014-12-03 | 福建星网锐捷网络有限公司 | Method, device and system for configuring pre-emphasis for interconnection equipment and network device |
Non-Patent Citations (3)
| Title |
|---|
| 佟玲: "基于协方差矩阵的S-参数测量不确定度分析方法及应用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 胡为东: "信号完整性问题与S参数的关系", 《电子产品世界》 * |
| 蒋明明: "GaAs MESFET在液态温度下的S参数", 《东南大学学报（自然学科版）》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635007A (en) * | 2016-01-25 | 2016-06-01 | 浪潮(北京)电子信息产业有限公司 | Optimal equilibrium value setting method and system |
| CN105656822A (en) * | 2016-01-25 | 2016-06-08 | 浪潮(北京)电子信息产业有限公司 | Optimal equilibrium value setting method and system |
| CN109257094A (en) * | 2018-11-01 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of the pre-add weight values obtaining value method and device of the transmitter that serially unstrings |
| CN110377971A (en) * | 2019-06-27 | 2019-10-25 | 苏州浪潮智能科技有限公司 | A kind of chip drives EQ value optimal value determines method and device |
| CN110377971B (en) * | 2019-06-27 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Method and device for determining optimal value of chip drive EQ value |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104486270A (en) | Method and device for obtaining pre-emphasis equilibrium value of worst case | |
| CN103259874A (en) | Method and system for cross-system operating of application and cloud server | |
| CN105119663B (en) | WiFi signal method of testing and system | |
| WO2016150077A1 (en) | Method and device for parameter processing | |
| CN103812726A (en) | Automated testing method and device for data communication equipment | |
| CN104020763B (en) | The automatic test approach of input/output interface and system | |
| CN111211937B (en) | Method, device and system for testing stability of server link signals | |
| CN111830930A (en) | Motor controller simulation test method, system, device and computer storage medium | |
| EP2991234A1 (en) | Method, apparatus, and system for configuring high-speed serial bus parameter | |
| CN108072775B (en) | Testing device of mobile terminal | |
| CN103248527A (en) | Testing tool device, testing system and testing method for Ethernet consistency | |
| JP2013207348A (en) | Information processing device, test method, and test program | |
| CN104679571B (en) | Multiple pattern generators are entered with the apparatus and method that line program upgrades automatically simultaneously | |
| CN105515804A (en) | Apparatus and method for fixing client system errors | |
| CN106028381A (en) | Method and device for testing transmission rate on mobile terminal | |
| CN108006925A (en) | Air-conditioning stress test method, computer installation, computer-readable recording medium | |
| CN111130917B (en) | Line testing method, device and system | |
| CN109032986A (en) | A kind of drive system and driving debugging system of PCIE link | |
| CN104239772A (en) | Information processing method and electronic equipment | |
| CN104410592A (en) | Method and system for automatically selecting optimal equilibrium value along with temperature change | |
| CN104410591A (en) | Method and system for automatically selecting optimal equilibrium value along with pressure change | |
| CN107864515A (en) | A kind of control method and device of AP channels switching | |
| CN104730448A (en) | Automatic test equipment resource allocation method and automatic test channel allocation device | |
| CN109639346B (en) | BOSA calibration method, test terminal and readable storage medium | |
| CN106302046A (en) | Control method for remote controller and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |
|
| WD01 | Invention patent application deemed withdrawn after publication |