CN107357991A - A kind of redriver chip parameters configuration structure and method - Google Patents
A kind of redriver chip parameters configuration structure and method Download PDFInfo
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- CN107357991A CN107357991A CN201710566849.9A CN201710566849A CN107357991A CN 107357991 A CN107357991 A CN 107357991A CN 201710566849 A CN201710566849 A CN 201710566849A CN 107357991 A CN107357991 A CN 107357991A
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- cable
- controller
- redriver
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
- G06F30/398—Design verification or optimisation, e.g. using design rule check [DRC], layout versus schematics [LVS] or finite element methods [FEM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
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- Theoretical Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention provides a kind of redriver chip parameters configuration structure and method, described structure includes some boards, redriver chips and controller are equipped with each piece of board, high speed signal is sent by redriver chips and high-speed cable between two boards card, and passes through controller and signal identification cable reception cable identification signal；Connected between redriver chips and controller on same board by data wire.Described method comprises the following steps：Step 1：The best configuration parameter that every kind of length of cable corresponds to redriver chips is obtained, and by the parameter input controller；Step 2：Cable between different boards is attached；Step 3：Controller identifies length of cable and reads the best configuration parameter of the cable；Step 4：Controller is by the best configuration parameter read-in redriver chips of reading.By increasing cable identification signal between board, length of cable is effectively judged, and redriver parameter settings are carried out according to length of cable, effectively increase the quality of high speed transmission of signals.
Description
Technical field
The present invention relates to server design field, specifically a kind of redriver chip parameters configuration structure and side
Method.
Background technology
When server product designs, high speed signal is more and more, and its demand to signal integrity is also relatively stricter.Have
In existing design, because the cabling of high speed signal is long, in order that signal, in incoming terminal equipment, signal quality can obtain
Ensure, redriver (signal repeater) chip is added more among cabling, using redriver chips by the signal of decay again
Secondary reinforcement.
The annexation figure transmitted as shown in Figure 1 for signal between board in the prior art, in figure board 1 and board 2 it
Between mutually pass high speed signal, Tx signals, which represent, is transmitted to the high speed signal of board 2 from board 1, and Rx signals represent from board 2 and are transmitted to board
1 high speed signal.In order to improve the driving force of signal, redriver is equipped with two boards, and according to two boards
Signal lead situation, loading condition and actual test result redriver driving force is set, meeting signal quality will
Ask.
In the application scenarios of reality, board 1 and board 2 in Fig. 1 are present in two cabinets, and by cable to it
In Tx signals and Rx signals be attached, moreover, the relative position of cabinet be able to may also be moved, therefore, two cabinets
The distance between be unfixed, however, when length of cable difference, the decay to high speed signal is also just different, corresponding
The optimized parameter configuration of redriver chips can also change.Due to length of cable can not be identified in the structure of prior art,
Therefore fixed parameter can only be configured to redriver, it is impossible to optimal parameter is configured for redriver according to actual conditions, can
The high speed signaling quality of transmission can be caused bad.
The content of the invention
In order to solve the above problems, there is provided a kind of redriver chip parameters configuration structure and method, increase between board
Ledger line cable identification signal, effectively judge length of cable, and redriver parameter settings are carried out according to length of cable, greatly promote
Redriver chip parameters and the matching degree of length of cable in practical application, effectively increase the quality of high speed transmission of signals.
The specific embodiment of the invention provides a kind of redriver chip parameters configuration structure, including some boards, each
Redriver chips and controller are equipped with block board, is sent between two boards card by redriver chips and high-speed cable
High speed signal, and pass through controller and signal identification cable reception cable identification signal；Redriver chips on same board
Connected between controller by data wire.
Further, the both ends of the signal identification cable connect two boards card respectively, and the one of the signal identification cable
End connects power supply and controller respectively on one piece of board by a resistance wherein, and the other end of the signal identification cable is another
It is grounded on one board.
Further, described controller is single-chip microcomputer or baseboard management controller or CPLD (complicated programmable logic devices
Part).
The embodiment of the present invention additionally provides a kind of redriver chip parameters collocation method, and described method includes following step
Suddenly：
Step 1：The best configuration parameter that every kind of length of cable corresponds to redriver chips is obtained, and the parameter is inputted and controlled
In device processed；
Step 2：Cable between different boards is attached；
Step 3：Controller identifies length of cable and reads the best configuration parameter of the cable；
Step 4：Controller is by the best configuration parameter read-in redriver chips of reading.
Further, the specific implementation process of step 1 is：
1) according to application scenarios, the cable of two kinds of length of selection；
2) two kinds of cables are plugged successively, by testing signal quality under different parameters, obtain best configuration parameter；
3) by the best configuration parameter of acquisition and corresponding length of cable information input controller.
Further, in step 3, the specific implementation process of controller identification length of cable is：Controller judges that cable is known
The level height of level signal, if high level, is then judged as the longer cable of length, if low level, then be judged as length compared with
Short cable.
The beneficial effect of the specific embodiment of the invention is：
The present invention increases controller by increasing cable identification signal between board, is effectively judged by low and high level
Go out length of cable, and show that data automatically configure optimal redriver parameters according to advance test, realize redriver cores
Piece parameter can only change configuration, can not only greatly improve of redriver chip parameters and length of cable in practical application
With degree, the quality of high speed transmission of signals is effectively improved, moreover, installing the situation of board and connection cables for high-volume, only
Only need to configure primary parameter, the time of configuration parameter can be saved, greatly improve operating efficiency.
Brief description of the drawings
Fig. 1 is the annexation schematic diagram that signal transmits between board in the prior art；
Fig. 2 is that signal transmits annexation schematic diagram between board in the embodiment of the present invention；
Fig. 3 is the schematic diagram of redriver parameter read-ins structure in the embodiment of the present invention；
Fig. 4 is the flow chart of redriver method for parameter configuration in the embodiment of the present invention.
Embodiment
In order that those skilled in the art better understood when, realize the present invention, below by specific embodiment pair
The present invention is described in detail.
Embodiment：
As shown in Fig. 2 present embodiments providing a kind of redriver chip parameters configuration structure, the structure is with two boards card
Between signal transmission exemplified by, in the structure shown in Fig. 2, including board 1 and board 2, board 1 utilizes itself installation
Redriver chips send Tx high speed signals to board 2, and the redriver chips that board 2 is installed using itself are sent to board 1
Rx high speed signals, Tx high speed signals and Rx high speed signals are transmitted in high-speed cable.
In addition, also including cable identification signal 1 and cable identification signal 2 in Fig. 2, cable identification signal 1 is passed from board 1
Defeated to arrive board 2, the signal is transmitted by a signal identification cable, and the signal is directly grounded on board 1, and in plate
It is connected on card 2 by a resistance on power supply and controller.Similarly, cable identification signal 2 is to be transferred to board 1 from board 2, the letter
Number it is transmitted by a signal identification cable, the signal is directly grounded on board 2, and passes through an electricity on board 1
Resistance is connected on power supply and controller.Resistance described in the paragraph, the general electricity for using 1K Ω to 10K Ω in conventional selection
Resistance.
For the inside of same board, as shown in figure 3, passing through data line transfer between controller and redriver chips
Data, such as an I2C bus.After system electrification, controller detects the level of cable identification signal, and is sentenced according to level height
Disconnected cable type, redriver configuration informations corresponding to the length of cable prestored are written in redriver, are completed
Configuration to redriver parameters.Controller can select one piece of single singlechip chip, can also utilize substrate management control
Device processed, it is also an option that CPLD, wherein, baseboard management controller is selected, cost is minimum, but writes the effect and effect of output data
Rate is not high；Select CPLD, write output data effect and efficiency edit effect it is best, but add new device, cost compared with
It is high；Select single-chip microcomputer then between baseboard management controller and CPLD.
As shown in figure 4, the embodiment of the present invention additionally provides a kind of redriver chip parameters collocation method, described method
Comprise the following steps：
Step 1：The best configuration parameter that every kind of length of cable corresponds to redriver chips is obtained, and the parameter is inputted and controlled
In device processed, detailed process is：First, according to application scenarios, select the cable of two kinds of length, for example, common equipment cabinet server it
Between, it is sufficient to select the cable of 1 meter and 1.5 meters two kinds of length.Then, cable 1 is first plugged, one group of parameter is attempted, looks at letter
Number quality is how, readjusts parameter testing further according to signal testing result, eventually finds one group of parameter for being adapted to the system,
Parameter setting during as insertion cable 1；Then plug wire cable 2, aforesaid operations are repeated.Finally, by the best configuration parameter of acquisition
And corresponding length of cable information storage is into controller.
Step 2：With reference to the annexation described in accompanying drawing 2 and accompanying drawing 3, by the high-speed cable between different boards, signal
Identification cable, I2C buses are attached.
Step 3：Controller judges the level height of cable identification signal, if high level, is then judged as that length is longer
Cable, if low level, then it is judged as the shorter cable of length.Then, the best configuration of the cable stored in read step 1
Parameter.
By taking two 1 meter and 1.5 meters of cable as an example：
When the first cable is inserted, the cable of e.g. 1m length, the cable is cable identification signal 1 from board
1 is connected to board 2, that is to say, that although the power supply that the signal is connected on board 2 by a resistance, but it is straight on board 1
Ground is connect, so controller identifies that the signal is low level.
When inserting the cable of the first 1.5m length in addition, cable identification signal 1 is not connected to board by the cable from board 1
2, reason is that the cable is longer than 1 meter, and signal does not pass 1.5 meters, that is to say, that the signal only connects power supply by a resistance, still
Because signal is not grounded as, now controller identifies that the signal is high level to not board 1.
Step 4：Controller is by the best configuration parameter read-in redriver chips of reading.
Although specification and drawings and examples have been carried out being described in detail to the invention, this area skill
Art personnel should be appreciated that and still the invention can be modified or equivalent substitution；And all do not depart from wound of the present invention
The technical scheme for the spirit and scope made and its improvement, it is encompassed by among the protection domain of the invention patent.
Claims (6)
1. a kind of redriver chip parameters configuration structure, it is characterized in that, including some boards, it is equipped with each piece of board
Redriver chips and controller, high speed signal is sent by redriver chips and high-speed cable between two boards card, and led to
Cross controller and signal identification cable reception cable identification signal；Lead between redriver chips and controller on same board
Cross data wire connection.
2. a kind of redriver chip parameters configuration structure according to claim 1, it is characterized in that, the signal identification line
The both ends of cable connect two boards card respectively, and one end of the signal identification cable passes through a resistance point wherein on one piece of board
Power supply and controller are not connect, and the other end of the signal identification cable is grounded on another board.
3. a kind of redriver chip parameters configuration structure according to claim 1 or 2, it is characterized in that, described control
Device is single-chip microcomputer or baseboard management controller or CPLD.
4. a kind of redriver chip parameters collocation method, it is characterized in that, described method comprises the following steps：
Step 1：Obtain the best configuration parameter that every kind of length of cable corresponds to redriver chips, and by the parameter input controller
In；
Step 2：Cable between different boards is attached；
Step 3：Controller identifies length of cable and reads the best configuration parameter of the cable；
Step 4：Controller is by the best configuration parameter read-in redriver chips of reading.
5. a kind of redriver chip parameters collocation method according to claim 4, it is characterized in that, the specific reality of step 1
Now process is：
1) according to application scenarios, the cable of two kinds of length of selection；
2) two kinds of cables are plugged successively, by testing signal quality under different parameters, obtain best configuration parameter；
3) by the best configuration parameter of acquisition and corresponding length of cable information input controller.
6. a kind of redriver chip parameters collocation method according to claim 5, it is characterized in that, in step 3, controller
Identification length of cable specific implementation process be：Controller judges the level height of cable identification signal, if high level, then sentences
Break as the longer cable of length, if low level, be then judged as the shorter cable of length.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710566849.9A CN107357991A (en) | 2017-07-12 | 2017-07-12 | A kind of redriver chip parameters configuration structure and method |
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| CN201710566849.9A CN107357991A (en) | 2017-07-12 | 2017-07-12 | A kind of redriver chip parameters configuration structure and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240967A (en) * | 2018-09-19 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of method and controller of parameter configuration |
| CN111030778A (en) * | 2019-11-30 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Parameter self-adaption method, device and equipment of high-speed signal and readable storage medium |
| CN111723038A (en) * | 2020-06-12 | 2020-09-29 | 广东浪潮大数据研究有限公司 | Signal compensation method and device, electronic equipment and storage medium |
| CN113722255A (en) * | 2021-09-01 | 2021-11-30 | 浙江大华技术股份有限公司 | Signal quality processing method, device and system |
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| CN104978251A (en) * | 2015-06-29 | 2015-10-14 | 浪潮电子信息产业股份有限公司 | Method for supporting single EEPROM to adjust driving capability of Redriver chips |
| CN106325919A (en) * | 2016-08-11 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Configuration system and method based on PCIE (peripheral component interface express) Redriver |
| CN106325850A (en) * | 2016-08-03 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Method and device for self-adaptively adjusting ReDriver configuration parameter based on temperature and humidity |
| CN106598903A (en) * | 2016-11-29 | 2017-04-26 | 浙江宇视科技有限公司 | Method and device for adjusting Redriver chip parameters |
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2017
- 2017-07-12 CN CN201710566849.9A patent/CN107357991A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104978251A (en) * | 2015-06-29 | 2015-10-14 | 浪潮电子信息产业股份有限公司 | Method for supporting single EEPROM to adjust driving capability of Redriver chips |
| CN106325850A (en) * | 2016-08-03 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Method and device for self-adaptively adjusting ReDriver configuration parameter based on temperature and humidity |
| CN106325919A (en) * | 2016-08-11 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Configuration system and method based on PCIE (peripheral component interface express) Redriver |
| CN106598903A (en) * | 2016-11-29 | 2017-04-26 | 浙江宇视科技有限公司 | Method and device for adjusting Redriver chip parameters |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109240967A (en) * | 2018-09-19 | 2019-01-18 | 郑州云海信息技术有限公司 | A kind of method and controller of parameter configuration |
| CN111030778A (en) * | 2019-11-30 | 2020-04-17 | 苏州浪潮智能科技有限公司 | Parameter self-adaption method, device and equipment of high-speed signal and readable storage medium |
| CN111723038A (en) * | 2020-06-12 | 2020-09-29 | 广东浪潮大数据研究有限公司 | Signal compensation method and device, electronic equipment and storage medium |
| CN111723038B (en) * | 2020-06-12 | 2022-08-12 | 广东浪潮大数据研究有限公司 | Signal compensation method and device, electronic equipment and storage medium |
| CN113722255A (en) * | 2021-09-01 | 2021-11-30 | 浙江大华技术股份有限公司 | Signal quality processing method, device and system |
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Application publication date: 20171117 |