CN106294267A - A kind of equalizer feedback system and method based on one-way communication consensus standard - Google Patents
A kind of equalizer feedback system and method based on one-way communication consensus standard Download PDFInfo
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- CN106294267A CN106294267A CN201610674208.0A CN201610674208A CN106294267A CN 106294267 A CN106294267 A CN 106294267A CN 201610674208 A CN201610674208 A CN 201610674208A CN 106294267 A CN106294267 A CN 106294267A
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- equalizer
- terminal parts
- way communication
- consensus standard
- evaluation index
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/02—Protocol performance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
Abstract
The present invention provides a kind of equalizer feedback system and method based on one-way communication consensus standard.Wherein, described equalizer feedback system based on one-way communication consensus standard includes: transmitting terminal parts, and described transmitting terminal parts include a transmission equalizer, sends after communication data is modulated according to one group of channel parameter of configuration by equalizer and sends；Receiving terminal parts, described receiving terminal parts include a reception equalizer, for receiving the communication data that described transmitting terminal parts send, are processed, by described reception equalizer, the communication data received, obtain evaluation index value；Control station, for configuring one group of channel parameter of described transmission equalizer and obtaining the evaluation index value of the communication data modulated according to described channel parameter from described reception equalizer, determines the channel parameter group that the evaluation index value of minimum is corresponding.The solution of the present invention can adjust optimal configuration parameter automatically.
Description
Technical field
The present invention relates to a kind of communication technical field, particularly relate to a kind of equalizer based on one-way communication consensus standard
Feedback system and method.
Background technology
At present some conventional chip standard agreements, if D-PHY, JESD 204B etc. is one-way communication consensus standard, this
Standard has saved chip area to a certain extent, reduces power consumption, but then can significantly improve error code for high-speed communication
Rate.Such as, 204B communication standard is widely used in ADC (abbreviation of Analog-to-Digital Converter refers to that analog turns
Parallel operation or analog/digital converter) in system, it is the working standard connecting AD parts with subsequent digital signal processing component.
This standard has following basic characteristics compared with other agreement: 1. half-duplex channel, without reverse feedback path, (PCIe, SRIO are double
To path)；2. bit error rate requirement 10^ (-15), exceedes 3 orders of magnitude of general protocol (PCIe typically requires 10^ (-12))；3. allusion quotation
Type application passage shorter (unlike PCIe etc.), about about 20cm.The data of chip chamber transmit easily there is distorted signals so that connect
The sampled data of receiving end Rx is with obvious burr, if burr produces near Rx sampling clock rising edge or trailing edge, and link
Then can produce the higher bit error rate.Therefore we need by equalizer (EQ), data to be sent to be carried out spy at transmitting terminal Tx
Different modulation, can adopt normal data adapting to receiving terminal.
In consideration of it, how to find a kind of preferred channels parameter to being applicable to equalizer configuration just to become people in the art
Member's problem demanding prompt solution.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of based on one-way communication Protocol Standard
Accurate equalizer feedback system and method, is used for solving in prior art because one-way communication standard agreement does not support that feedback is logical
Road, it is difficult to the problem determining the preferred channels parameter being applicable to transmitting terminal equalizer configuration.
For achieving the above object and other relevant purposes, the present invention provides a kind of equilibrium based on one-way communication consensus standard
Device feedback system, described equalizer feedback system based on one-way communication consensus standard includes: transmitting terminal parts, described transmitting terminal
Parts include a transmission equalizer, send after communication data is modulated according to one group of channel parameter of configuration by equalizer and send out
Send；Receiving terminal parts, described receiving terminal parts include a reception equalizer, for receiving the logical of described transmitting terminal parts transmission
Letter data, is processed the communication data received by described reception equalizer, obtains evaluation index value；Control station, uses
Adjust according to described channel parameter in the one group of channel parameter obtaining from described reception equalizer configuring described transmission equalizer
The evaluation index value of the communication data of system；Determine the channel parameter group that the evaluation index value of minimum is corresponding.
Alternatively, described one-way communication consensus standard includes: D-PHY agreement or JESD 204B agreement.
Alternatively, described communication data includes K28.5 code.
Alternatively, the ROM of described transmitting terminal parts stores organize channel parameter more.
Alternatively, described control station or be integrated in described transmitting terminal parts, or it is integrated into described receiving terminal parts
In, or be positioned in peripheral hardware standalone feature chip.
Alternatively, described transmitting terminal parts are analog-to-digital chip, and described receiving terminal parts are digital signal processor core
Sheet；Or described transmitting terminal parts are digital signal processing chip, described receiving terminal parts are that numeral turns analog chip.
The present invention also provides for a kind of equalizer feedback method based on one-way communication consensus standard, described based on one-way communication
The equalizer feedback method of consensus standard includes: step S1, and control station reads the transmission to transmitting terminal parts of one group of channel parameter
Equalizer configures；Step S2, sends after communication data is modulated by equalizer and is sent to receiving terminal parts；Step S3,
The reception equalizer communication data to receiving of receiving terminal parts carries out process and obtains evaluation index value, and described assessment is referred to
Scale value feeds back to described control station；Step S4, the evaluation index value that channel parameter described in control station record and correspondence obtain；Step
Rapid S5, reselects different channel parameter groups, performs step S1 to S4, until all different channel parameter groups all obtain phase
The evaluation index value answered；Step S6, determines the channel parameter group that the evaluation index value of minimum is corresponding.
Alternatively, described one-way communication consensus standard includes: D-PHY agreement or JESD 204B agreement.
Alternatively, described communication data includes K28.5 code.
Alternatively, described control station configures the equalizer algorithm of described reception equalizer；Described reception equalizer is by all
Weighing apparatus algorithm processes the evaluation index value obtaining correspondence to the communication data received.
Alternatively, control station reads implementing of one group of channel parameter and includes: control station is from described transmitting terminal parts
ROM reads channel parameter group.
Alternatively, described equalizer feedback method based on one-way communication consensus standard also includes: according to the channel determined
The transmission equalizer of described transmitting terminal parts is configured by parameter group.
Alternatively, described equalizer feedback method based on one-way communication consensus standard also includes: control station is to being determined
Channel parameter group be finely adjusted, and according to feedback evaluation index value further determine that current type channel optimal allocation ginseng
Number.
Alternatively, described equalizer feedback method based on one-way communication consensus standard also includes: transmitting terminal parts and connecing
Data path between receiving end parts can contain polytype channel, determines the optimal allocation ginseng of different types of channels respectively
Number.
As it has been described above, a kind of based on one-way communication consensus standard the equalizer feedback system and method for the present invention, have
Following beneficial effect: can automatically adjust optimal configuration parameter, road, same time control have been widened in the practicality for one-way communication standard
The design of platform processed makes systemic-function the most succinct efficiently.
Accompanying drawing explanation
Fig. 1 is shown as the module of an embodiment of the equalizer feedback system based on one-way communication consensus standard of the present invention
Schematic diagram.
Fig. 2 is shown as the structure of an embodiment of the equalizer feedback system based on one-way communication consensus standard of the present invention
Schematic diagram.
Fig. 3 is shown as the flow process of an embodiment of the equalizer feedback method based on one-way communication consensus standard of the present invention
Schematic diagram.
Fig. 4 is shown as the stream of another embodiment of the equalizer feedback system based on one-way communication consensus standard of the present invention
Journey schematic diagram.
Element numbers explanation
1 is based on one-way communication consensus standard
Equalizer feedback system
11 transmitting terminal parts
111 send equalizer
12 receiving terminal parts
121 receive equalizer
13 control stations
S1～S6 step
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by the most different concrete realities
The mode of executing is carried out or applies, the every details in this specification can also based on different viewpoints and application, without departing from
Various modification or change is carried out under the spirit of the present invention.
It should be noted that the diagram provided in the present embodiment illustrates the basic conception of the present invention the most in a schematic way,
Component count, shape and size when only showing the assembly relevant with the present invention rather than implement according to reality in the most graphic are painted
System, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout kenel also may be used
Can be increasingly complex.
The present invention provides a kind of equalizer feedback system based on one-way communication consensus standard, described one-way communication Protocol Standard
Standard includes but not limited to: D-PHY agreement or JESD 204B agreement etc..JESD204B is for transducer and Digital processing device
Between serial data interface.It is third generation standard, solves some defects of previous version.The advantage of this interface includes:
The required circuit board space of data-interface route is less, sets up with to keep timing requirements lower, and transducer and logical device
Encapsulate less.D-PHY agreement is one in MIPI agreement, and D-PHY provides DSI (series display interface) and CSI (serial
Utilizing camera interface) definition on a physical layer.D-PHY describes source and synchronizes, at a high speed, and the physical layer of low-power consumption.The data of D-PHY
Transfer rate is not fixing, 500-1000Mbit/s.
In one embodiment, as it is shown in figure 1, described equalizer feedback system 1 based on one-way communication consensus standard is wrapped
Include transmitting terminal parts 11, receiving terminal parts 12 and control station 13.Wherein:
Described transmitting terminal parts 11 include a transmission equalizer 111, send the equalizer 111 one group of channel according to configuration
Parameter sends after being modulated by communication data.Described communication data includes K28.5 code.K28.5 code is a kind of in order to represent
Special 10 bit character that Fibre Channel operation starts.The ROM of described transmitting terminal parts stores many group channel ginsengs
Number.Such as, the ROM of described transmitting terminal parts stores 10 groups of channel parameters.
Described receiving terminal parts 12 are connected with transmitting terminal parts 11, including a reception equalizer 121, are used for receiving described
The communication data that transmitting terminal parts send, is processed the communication data received by described reception equalizer 121, obtains
Evaluation index value.Described evaluation index value is the least, illustrates that the channel quality of correspondence is the best.
Control station 13 is connected with transmitting terminal parts 11 and receiving terminal parts 12, for configuring the one of described transmission equalizer
Organize channel parameter and from described reception equalizer 121, obtain the evaluation index of the communication data modulated according to described channel parameter
Value；Determine the channel parameter group that the evaluation index value of minimum is corresponding.In one embodiment, described control station 13 or be integrated into
In described transmitting terminal parts 11, or described control station 13 is integrated in described receiving terminal parts 12, or described control station 13
It is positioned in peripheral hardware standalone feature chip.Control station 13 is formed closed by feedback network and transmitting terminal parts 11, receiving terminal parts 12
Close feedback system.
In one embodiment, described transmitting terminal parts 11 are analog-to-digital chip, and described receiving terminal parts 12 are number
Word signal processing chip.In another embodiment, described transmitting terminal parts 11 are digital signal processing chip, described receiving terminal
Parts 12 turn analog chip for numeral.
In one embodiment, as in figure 2 it is shown, described equalizer feedback system 1 based on one-way communication consensus standard is main
Transmitting terminal chip A (transmitting terminal parts) to be included, receiving terminal chip B (receiving terminal parts) and 3 parts of control station module, A and B
In all contain equalizer EQ, it includes EQ algorithm.Control station passes through to send the commands to perform equalizer configuration and detection algorithm,
Thus control the functional realiey of equalizer.The ROM of chip A prestores 10 groups of exemplary equalizer configuration parameters, often in group parameter
There is again multinomial iterative parameter, design parameter value is relevant with equalizer algorithm；Control station sends instructions to chip, carries from ROM
Take out one group of equalizer configuration parameter, access equalizer EQ through the register module of chip A, carry out parameter configuration；Chip A with
Chip B is connected by channel；The feedback that chip B is given is transferred to control station.
The present invention also provides for a kind of equalizer feedback method based on one-way communication consensus standard, described based on one-way communication
The equalizer feedback method of consensus standard is applied to equalizer feedback system based on one-way communication consensus standard as above
In.Described one-way communication consensus standard includes: D-PHY agreement or JESD 204B agreement etc..
In one embodiment, as it is shown on figure 3, described equalizer feedback method bag based on one-way communication consensus standard
Include:
Step S1, control station reads one group of channel parameter and configures the transmission equalizer of transmitting terminal parts.At one
In embodiment, control station reads implementing of one group of channel parameter and includes: control station is read from the ROM of described transmitting terminal parts
Win the confidence parameter group.
Step S2, sends after communication data is modulated by equalizer and is sent to receiving terminal parts.Described communication data is
The debugging code stream of equalizer configuration process, is sent by transmitting terminal parts.Described communication data includes K28.5 code.K28.5 code is one
Plant in order to represent special 10 bit character that Fibre Channel operation starts.
Step S3, the reception equalizer communication data to receiving of receiving terminal parts carries out process and obtains evaluation index
Value, and described evaluation index value is fed back to described control station.In one embodiment, the described reception of described control station configuration is equal
The equalizer algorithm of weighing apparatus；Described reception equalizer by the equalizer algorithm communication data to being received carry out process obtain right
The evaluation index value answered.
Step S4, the evaluation index value that channel parameter described in control station record and correspondence obtain.
Step S5, reselects different channel parameter groups, performs step S1 to S4, until all different channel parameters
Group all obtains corresponding evaluation index value.Described evaluation index value is the least, illustrates that the channel quality of correspondence is the best.
Step S6, determines the channel parameter group that the evaluation index value of minimum is corresponding.When the evaluation index value pair determining minimum
After the channel parameter group answered, normal data path can be switched to.
In one embodiment, described equalizer feedback method based on one-way communication consensus standard also includes: according to really
The transmission equalizer of described transmitting terminal parts is configured by fixed channel parameter group.Further, described based on one-way communication
The equalizer feedback method of consensus standard also includes: control station to determined by channel parameter group be finely adjusted, and according to feedback
Evaluation index value further determine that the optimal allocation parameter of current type channel.In one embodiment, described based on unidirectional
The equalizer feedback method of communication protocol standard also includes: the data path between transmitting terminal parts and receiving terminal parts can contain
There is polytype channel, determine the optimal allocation parameter of different types of channels respectively.
In one embodiment, described equalizer feedback method based on one-way communication consensus standard be mainly used in search work as
The optimal allocation parameter of front type channels, search present channel optimal allocation parameter whole during, chip A and chip B believe
Data between road are transmitted as the K28.5 code of standard, and configuration terminates rear link and can switch to normal data path.Control station passes through core
Form access chip A of sheet external interface access depositor and each module in inside of chip B, the feedback signal warp that chip B is given
Control station is sent in chip A.As shown in Figure 4, it is specifically divided into procedure below:
1. disposition data source, chip A (Tx end, i.e. transmitting terminal parts) channel is to chip B (Rx end, i.e. receiving terminal parts)
Send K28.5 code data.The ROM of chip A has 10 groups of channel parameters.The ROM of transmitting terminal parts has 10 groups of typical cases all
Weighing apparatus parameter, uses poll to be loaded into the mode of equalizer algorithm and preset passage configuration parameter to obtain optimal set, parameter excellent
Bad be given by the desired value of RxEQ.Often there is again multinomial iterative parameter in group parameter, design parameter value is relevant with equalizer algorithm.
2. control station reads one group of configuration parameter from the ROM of chip A and detects, and has 10 and assemble and put in described ROM
Parameter (i.e. channel parameter group).It is written to the transmission equalizer of chip A with the form accessing depositor by chip exterior interface
In EQ, by EQ algorithm, data are modulated.
3. the data after modulation receive the number after modulation via the reception equalizer EQ of channel transmission to chip B, chip B
One or several desired value can be obtained after processing after according to, can be read by the corresponding read-only register set.In this reality
Executing in example, described desired value includes 3, is respectively as follows: and receives the data that the peak amplifier within equalizer provides, in equalizer
The feedback guess value of sampler, calculates a data value of intersymbol interference.Equilibrium can be reflected by all of desired value entirety
The multidate information amount that algorithm integration is cumulative.Can be using overall for all of desired value as evaluation index value, or by all
Desired value be further processed and obtain evaluation index value.Described evaluation index value is fed back to control station, control station remembers
Record (records described channel parameter, the channel parameter i.e. configured, and the evaluation index value that obtains of correspondence)；
4. repeating step 2-3, after waiting to run through the 10th group of detection parameter, control station is selected minimum one group of desired value and is
Optimum preset parameter value (the channel parameter group determined).Because the evaluation index value of chip B is the least, represent channel quality the best.
Having 10 groups of exemplary equalizer parameters in the i.e. ROM of transmitting terminal parts, the mode using poll to be loaded into equalizer algorithm obtains
Obtaining optimal set and preset passage configuration parameter, the quality of parameter is given by the desired value of RxEQ.Often there is again multinomial changing in group parameter
For parameter, design parameter value is relevant with equalizer algorithm.
5., by the equalizer EQ of one group of optimum preset parameter value input chip A, control station feeds back by reading chip B
The desired value returned, to the depositor of chip A with instruction, finely tunes the equalizer of its inside, finally gives current type channel
Optimal allocation parameter.Will optimal set equalizer parameter preset by the way of closed loop feedback is finely tuned, at rational interval range
Interior correction further, is equalized device optimal allocation parameter.
In sum, a kind of based on one-way communication consensus standard the equalizer feedback system and method for the present invention can be automatic
Adjusting optimal configuration parameter, road has been widened in the practicality for one-way communication standard, and the design of control station simultaneously makes system
Function is the most succinct efficiently.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial exploitation value
Value.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (12)
1. an equalizer feedback system based on one-way communication consensus standard, it is characterised in that described based on one-way communication association
The equalizer feedback system of standard of assessing a bid for tender includes:
Transmitting terminal parts, described transmitting terminal parts include a transmission equalizer, send the equalizer one group of channel according to configuration
Parameter sends after being modulated by communication data；
Receiving terminal parts, described receiving terminal parts include a reception equalizer, for receiving what described transmitting terminal parts sent
Communication data, is processed the communication data received by described reception equalizer, obtains evaluation index value；
Control station, for configuring one group of channel parameter of described transmission equalizer and obtaining according to institute from described reception equalizer
State the evaluation index value of the communication data of channel parameter modulation；Determine the channel parameter group that the evaluation index value of minimum is corresponding.
Equalizer feedback system based on one-way communication consensus standard the most according to claim 1, it is characterised in that: described
The ROM of transmitting terminal parts stores and organizes channel parameter more.
Equalizer feedback system based on one-way communication consensus standard the most according to claim 1, it is characterised in that: described
Control station or be integrated in described transmitting terminal parts, or be integrated in described receiving terminal parts, or it is independent to be positioned at peripheral hardware
In functional chip.
Equalizer feedback system based on one-way communication consensus standard the most according to claim 1, it is characterised in that: described
Transmitting terminal parts are analog-to-digital chip, and described receiving terminal parts are digital signal processing chip；Or described transmission end
Part is digital signal processing chip, and described receiving terminal parts are that numeral turns analog chip.
5. an equalizer feedback method based on one-way communication consensus standard, it is characterised in that: described based on one-way communication association
The equalizer feedback method of standard of assessing a bid for tender includes:
Step S1, control station reads one group of channel parameter and configures the transmission equalizer of transmitting terminal parts；
Step S2, sends after communication data is modulated by equalizer and is sent to receiving terminal parts；
Step S3, the reception equalizer communication data to receiving of receiving terminal parts carries out process and obtains evaluation index value, and
Described evaluation index value is fed back to described control station；
Step S4, the evaluation index value that channel parameter described in control station record and correspondence obtain；
Step S5, reselects different channel parameter groups, performs step S1 to S4, until all different channel parameter groups are all
Obtain corresponding evaluation index value；
Step S6, determines the channel parameter group that the evaluation index value of minimum is corresponding.
Equalizer feedback method based on one-way communication consensus standard the most according to claim 5, it is characterised in that: described
One-way communication consensus standard includes: D-PHY agreement or JESD 204B agreement.
Equalizer feedback method based on one-way communication consensus standard the most according to claim 5, it is characterised in that: described
Communication data includes K28.5 code.
Equalizer feedback method based on one-way communication consensus standard the most according to claim 5, it is characterised in that: described
Control station configures the equalizer algorithm of described reception equalizer；Described reception equalizer is logical to received by equalizer algorithm
Letter data carries out processing the evaluation index value obtaining correspondence.
Equalizer feedback method based on one-way communication consensus standard the most according to claim 5, it is characterised in that: control
Platform reads implementing of one group of channel parameter and includes: control station reads channel parameter group from the ROM of described transmitting terminal parts.
Equalizer feedback method based on one-way communication consensus standard the most according to claim 5, it is characterised in that: institute
State equalizer feedback method based on one-way communication consensus standard also to include: according to the channel parameter group determined to described transmitting terminal
The transmission equalizer of parts configures.
11. equalizer feedback methods based on one-way communication consensus standard according to claim 5, it is characterised in that: institute
State equalizer feedback method based on one-way communication consensus standard also to include: control station to determined by channel parameter group carry out micro-
Adjust, and further determine that the optimal allocation parameter of current type channel according to the evaluation index value of feedback.
12. equalizer feedback methods based on one-way communication consensus standard according to claim 5, it is characterised in that: institute
State equalizer feedback method based on one-way communication consensus standard also to include: the data between transmitting terminal parts and receiving terminal parts
Path can contain polytype channel, determines the optimal allocation parameter of different types of channels respectively.
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Application publication date: 20170104 |
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