CN106802876B - A method of realizing auto-negotiation function in opposite end in high speed Serdes - Google Patents
A method of realizing auto-negotiation function in opposite end in high speed Serdes Download PDFInfo
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- CN106802876B CN106802876B CN201510844041.3A CN201510844041A CN106802876B CN 106802876 B CN106802876 B CN 106802876B CN 201510844041 A CN201510844041 A CN 201510844041A CN 106802876 B CN106802876 B CN 106802876B
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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
- G06F13/4291—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus using a clocked protocol
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Abstract
The present invention provides a kind of method that auto-negotiation function in opposite end is realized in high speed Serdes, and custom coding TS2 sequence is sent by the way of poll, and by the transmitting-receiving process to end data, auto negotiation goes out the data path that can support duplex；Transmitting terminal corresponding to the link that receiving end can not lock is closed, that is, closes the data path that can not be locked, finally selects the different links for supporting full-duplex mode.The of the invention method that auto-negotiation function in opposite end is realized in high speed Serdes can auto negotiation go out the different link mode for meeting rate requirement such as X1, X2, X4, the data path that can not be locked is automatically closed, effectively reduces the system power dissipation of Serdes entirety；Negotiation code stream TS1, TS2 used are custom coding, and negotiations process is not influenced by format, and data/address bus has stronger reusability.
Description
Technical field
The present invention relates to data communication technology fields, and opposite end auto-negotiation is realized in high speed Serdes more particularly to one kind
The method of function.
Background technique
IEEE 802.3bj standard defines the physical layer specification for supporting backboard and copper cable message transmission rate 100Gbps,
The wherein Physical Coding Sublayer under 100GBASE-KR4 (Physical Coding Sublayer, PCS) single channel communications rate
For 25Gbps, which only supports 4 lane while working online.
Serdes is English SERializer (serializer)/DESerializer (deserializer) abbreviation.It is a kind of master
The serial communication technology of the time division multiplexing (TDM) of stream, point-to-point (P2P).Turned in transmitting terminal multi-path low speed parallel signal
Change high-speed serial signals into, by transmission media (optical cable or copper wire), finally high-speed serial signals are re-converted into receiving end
Speed parallel signals.This point-to-point serial communication technology makes full use of the channel capacity of transmission media, reduces required biography
Defeated channel and device pin number, to substantially reduce communications cost.
The different rates such as Serdes technical support 2.5G/3.125G/5G/10G/25G, while supporting AN, i.e., self tuning quotient module
Formula.As shown in Figure 1, if two equipment can send specific data to other side by AN module with the same apparatus interconnection for supporting AN
Stream, while the data that other side sends over are received, according to link fault-tolerant ability and bit error rate threshold, it is logical to negotiate valid data
The flank speed that road and link are supported.If auto-negotiation success, is ready for sending valid data, on the contrary it is then start a new wheel oneself
Negotiate.
In the opposite end data transmission procedure of Serdes, we are unable to ensure in each connection, in each link
Data transmit-receive is normal；Serdes is used in the environment lower than 100G rate mode simultaneously, it would be desirable to be assisted according to the actual situation
Quotient goes out effective communication link mode.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide one kind realizes in high speed Serdes
The method of opposite end auto-negotiation function is capable of the data path of auto negotiation support duplex, selects the different satisfaction such as X1, X2, X4
The data path that can not be locked is automatically closed in the link mode of rate requirement；Negotiation code stream TS1, TS2 used are customized volume
Code；The data transmit-receive state of both link ends is pulled together using the switching of different code streams, realizes the data simultaneously match between distinct device,
It is finally completed the auto-negotiation process of link.
In order to achieve the above objects and other related objects, the present invention provides one kind and realizes that opposite end is self tuning in high speed Serdes
The method of quotient's function, comprising the following steps: step S1, initialize the data receiver and data of the first equipment and the second equipment
Transmitting terminal resets the data interlock state invalid markers and timer of the receiving end of the first equipment and the second equipment；Step S2,
Send TS1 sequence respectively in 4 accesses of the data sending terminal of the first equipment and the second equipment so that the first equipment and
The data receiver of two equipment checks the data interlock state of TS1 sequence；Step S3, after the data stabilization waiting received, first
The data receiver of equipment and the second equipment starts to check TS1 sequence, if the data interlock within preset TS1 sequence locking time
Success, is transferred to step S4；Otherwise, auto-negotiation fails, and is transferred to step S2；Step S4, the first equipment and the second equipment start to right
End sends TS2 sequence, while receiving and detecting the TS2 sequence that opposite end is sent；If the data of the first equipment and the second equipment connect
Receiving end detects TS2 sequence data interlock success within preset TS2 sequence locking time that opposite end is sent, then the first equipment
It is pulled together with the data transmit-receive state of the second equipment, two equipment room data send and receive into synchronous regime, are transferred to step
S5；Otherwise auto-negotiation fails, and is transferred to step S2；Step S5, the error code under synchronous regime, according to TS2 sequence in each channel
Rate and data lock state situation, number corresponding to the link that the data receiver of the first equipment and the second equipment can not be locked
It is closed according to transmitting terminal, auto negotiation obtains link mode；If all path deteriorations, auto-negotiation failure is transferred to step S2；Step
S6, stop sending TS2 sequence, start to send idle data sequence；If wrong data counts within the preset data stabilization time
It is less than threshold value, then shows auto-negotiation success；Otherwise auto-negotiation fails, and is transferred to step S2.
In one embodiment of the invention, 4 channels of first equipment and the second equipment room are 4 identical data link
Mode.
In one embodiment of the invention, the TS1 sequence and TS2 sequence are using Bu Tong polynomial PRBS Sequence.
In one embodiment of the invention, the idle data sequence uses the data of full 0.
In one embodiment of the invention, in the step S4, first equipment and the second equipment send TS2 sequence to opposite end
The initial time of column does not require identical.
In one embodiment of the invention, in the step S5, the link mode that auto negotiation obtains includes X1, X2, X4.
In one embodiment of the invention, in the step S6, after auto-negotiation success, the first equipment and the second equipment it is upper
Trip link starts to send valid data, and link can continue to monitor the data interlock state of valid data, if data interlock state has
Variation but no whole losing locks, then count link error rates again, select the valid data access for supporting duplex.
In one embodiment of the invention, the fault-tolerant ability and bit error rate threshold of first equipment and the second equipment room link
Value can match.
In one embodiment of the invention, further includes: after auto-negotiation success, if carrying out raising frequency or frequency reducing to link, to
The data stabilization time goes to step S2 later, starts a new wheel auto-negotiation.
As described above, the method for the invention for realizing auto-negotiation function in opposite end in high speed Serdes, has beneficial below
Effect:
(1) it need to only meet Serdes protocol rate specification, be locked in negotiations process according to the bit error rate and data in each channel
Determine state, closes transmitting terminal corresponding to the link that receiving end can not lock, only retain the channel for supporting full duplex；
(2) TS1, TS2 are custom coding, and Peer Negotiation process is not influenced by format, data/address bus tool
Standby stronger reusability；
(3) link fault-tolerant ability and bit error rate threshold can match, and improve the flexibility of system；
(4) equipment connection mode is flexible, effectively increases the stability of link multiplexing.
Detailed description of the invention
Fig. 1 is shown as realizing the circuit theory schematic diagram of opposite end auto-negotiation function system in the prior art；
Fig. 2 is shown as the flow chart of the method for the invention that auto-negotiation function in opposite end is realized in high speed Serdes；
Fig. 3 is shown with the method for the invention for realizing auto-negotiation function in opposite end in high speed Serdes and realizes equipment 1
The process schematic of negotiation between equipment 2.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
It should be noted that the basic conception that only the invention is illustrated in a schematic way is illustrated provided in the present embodiment,
Then only shown in schema with it is of the invention in related component rather than component count, shape and size when according to actual implementation draw
System, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel can also
It can be increasingly complex.
The method that auto-negotiation function in opposite end is realized in high speed Serdes of the invention supports full-duplex mode, passes through two
The link negotiation of equipment room, the final transmitting-receiving for realizing data are synchronous.Auto-negotiation process of the invention is based on support IEEE
The PCS data lock function of 802.3 agreements is realized that negotiations process is self-defined pattern；It is negotiable logical between equipment 1 and equipment 2
Road is 4 channel patterns, and the corresponding 4 identical data link protocols in 4 channels, the transmitting terminal of every access is synchronous to send same sequence
Column；Negotiation code stream TS1, TS2 used are custom coding in method, and negotiations process is not influenced by format.
Data interlock in the present invention, referring to allows there are certain bit error rate in link and can successfully complete symbol circle
Fixed state instruction, the synchronous locking signal of data is during link auto-negotiation always as judging the stable mark of data flow
Will.Data stabilization refers to that data interlock state is continual and steady in specific time.
Data interlock, which successfully refers to, detects in the continuous clock cycle that (such as 10000 clock cycle), lock state was not
It changes or lock state changes but non-superthreshold, (such as 10ms) state occurs at the end of the data interlock time
Normally jump.The detection duration of both of these case is the data interlock time, negotiates the data interlock of code stream TS1 and TS2
Time is different, while specific link fault-tolerant ability and bit error rate threshold can match.
Use following 3 kinds of sequences in the of the invention method for realizing auto-negotiation function in opposite end in high speed Serdes: TS1,
TS2 and idle data sequence.TS1, TS2 sequence can be different polynomial PRBS Sequences, be also possible to that false-lock will not be generated
Fixed custom list, feature are that can be avoided false-lock to determine, and the correctness of code stream is supported to detect.Idle data sequence can be
The data of full 0.
The of the invention basic content that the method for opposite end auto-negotiation function is realized in high speed Serdes includes:
(1) custom coding sequence TS2 is sent by the way of poll, it is automatic to assist by the transmitting-receiving process to end data
Quotient goes out the data path that can support duplex.
(2) transmitting terminal corresponding to the link that receiving end can not lock is closed, that is, closes the data path that can not be locked, most
The different link mode such as X1, X2, X4 is selected eventually.
Referring to Fig. 2, the method for the invention that auto-negotiation function in opposite end is realized in high speed Serdes the following steps are included:
Step S1, the data receiver and data sending terminal for initializing the first equipment and the second equipment, by the first equipment and
The data interlock state invalid markers and timer of the receiving end of second equipment are reset.
Step S2, TS1 sequence is sent respectively in 4 accesses of the data sending terminal of the first equipment and the second equipment, with
The data receiver of the first equipment and the second equipment that make checks the data interlock state of TS1 sequence.
Step S3, after the data stabilization waiting received, the data receiver of the first equipment and the second equipment starts to check TS1
Sequence, if the data interlock success within preset TS1 sequence locking time, is transferred to step S4；Otherwise, auto-negotiation fails, and is transferred to
Step S2.
Step S4, the first equipment and the second equipment start to send TS2 sequence to opposite end, while receiving and detecting opposite end transmission
The TS2 sequence come；If the data receiver of the first equipment and the second equipment detects TS2 sequence that opposite end is sent preset
Data interlock success in TS2 sequence locking time, then the data transmit-receive state of the first equipment and the second equipment is pulled together, and two set
Data send and receive into synchronous regime between standby, are transferred to step S5；Otherwise auto-negotiation fails, and is transferred to step S2.
For example, the data sending terminal of equipment 1 starts to send TS2 sequence to opposite end when equipment 1 and 2 negotiation data access of equipment
Column, while the data receiver of equipment 1 prepares the TS2 sequence that detection opposite end sends over.If the also not sent TS2 at this time of equipment 2
Sequence, then equipment 1 waits in the state and continues to send TS2 sequence；Etc. equipment 2 enter the state, until equipment 2 starts to setting
The TS2 sequence that standby 1 transmission TS2 sequence and synchronous detection receive.Equipment 1 also receives the TS2 sequence that opposite end is sent at this time
And start to detect.If data interlock success, then two distinct device end datas send and receive within TS2 sequence locking time
Into synchronous regime；Otherwise auto-negotiation fails, and starts a new round and negotiates.
Step S5, under synchronous regime, the bit error rate and data lock state situation according to TS2 sequence in each channel,
Data sending terminal corresponding to the link that the data receiver of first equipment and the second equipment can not be locked is closed, auto negotiation
Obtain link mode；If all path deteriorations, auto-negotiation failure is transferred to step S2.
Step S6, stop sending TS2 sequence, start to send idle data sequence；If within the preset data stabilization time,
Wrong data counting is less than threshold value, then shows auto-negotiation success；Otherwise auto-negotiation fails, and is transferred to step S2.
After the completion of auto negotiation, the different link mode such as X1, X2, X4 is obtained, the link mode selected supports duplex
Data transfer mode.
After auto-negotiation success, both ends upstream link starts to send valid data.Link can continue to monitor valid data
Data interlock state counts link error rates again, selects support if data interlock state changes but without whole losing locks
The valid data access of duplex.
Preferably, further includes: after auto-negotiation success, if carrying out raising frequency or frequency reducing to link, pending data stablizes the time
Later S2 is gone to step, a new wheel auto-negotiation is started.
In practical application, need to be interconnected communication between equipment 1 and equipment 2.Since two device datas initialized
Journey is asynchronous or hardware design reason, and it is inconsistent to will cause opposite end data transmit-receive state.If state is asynchronous, data channel without
Method selects effective data path.It is therefore desirable to which the data sending terminal to two equipment is synchronous with data receiver progress data
Processing.As shown in figure 3, the longitudinal axis is time shaft, the left and right sides respectively corresponds the negotiations process of equipment 1 and equipment 2, equipment 1 in figure
It is initialized prior to equipment 2, state is carried out during sending TS2 sequence and is pulled together, so that both ends keep transmitting-receiving consistent, it is final real
Existing link auto-negotiation process.
In conclusion of the invention realize that the method for opposite end auto-negotiation function need to only meet Serdes in high speed Serdes
Protocol rate specification, according to the bit error rate and data lock state in each channel in negotiations process, closing receiving end can not be locked
Link corresponding to transmitting terminal, only retain support full duplex channel, effectively reduce the system power dissipation of Serdes entirety；Side
Negotiation code stream TS1, TS2 used are custom coding in method, and negotiations process is not influenced by format, and data/address bus has
Stronger reusability；Link fault-tolerant ability and bit error rate threshold can match, and improve the flexibility of system；Equipment connection mode spirit
It is living, effectively increase the stability of link multiplexing.So the present invention effectively overcomes various shortcoming in the prior art and has height
Spend value of industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of method for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: the following steps are included:
Step S1, the data receiver and data sending terminal for initializing the first equipment and the second equipment, by the first equipment and second
The data interlock state invalid markers and timer of the data receiver of equipment are reset；
Step S2, TS1 sequence is sent respectively in 4 channels of the data sending terminal of the first equipment and the second equipment, so that
The data interlock state of the data receiver of first equipment and the second equipment inspection TS1 sequence；
Step S3, after the data stabilization waiting received, the data receiver of the first equipment and the second equipment starts to check TS1 sequence
Column, if the data interlock success within preset TS1 sequence locking time, is transferred to step S4；Otherwise, auto-negotiation fails, and is transferred to step
Rapid S2；
Step S4, the first equipment and the second equipment start to send TS2 sequence to opposite end, while receiving and detecting what opposite end was sent
TS2 sequence；If the data receiver of the first equipment and the second equipment detects TS2 sequence that opposite end is sent in preset TS2
Data interlock success in sequence locking time, then the data transmit-receive state of the first equipment and the second equipment is pulled together, two equipment
Between data send and receive into synchronous regime, be transferred to step S5；Otherwise auto-negotiation fails, and is transferred to step S2；
Step S5, under synchronous regime, link error rates and data lock state situation according to TS2 sequence in each channel,
Data sending terminal corresponding to the link that the data receiver of first equipment and the second equipment can not be locked is closed, auto negotiation
Obtain link mode；If all path deteriorations, auto-negotiation failure is transferred to step S2；
Step S6, stop sending TS2 sequence, start to send idle data sequence；If within the preset data stabilization time, mistake
Data counts are less than threshold value, then show auto-negotiation success；Otherwise auto-negotiation fails, and is transferred to step S2.
2. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
4 channels for stating the first equipment and the second equipment room are 4 identical data link protocols.
3. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
TS1 sequence and TS2 sequence are stated using Bu Tong polynomial PRBS Sequence.
4. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
State the data that idle data sequence uses full 0.
5. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
It states in step S4, first equipment and the second equipment do not require identical to the initial time that opposite end sends TS2 sequence.
6. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
It states in step S5, the link mode that auto negotiation obtains includes X1, X2, X4.
7. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
It states in step S6, after auto-negotiation success, the upstream link of the first equipment and the second equipment starts to send valid data, link meeting
The data interlock state of valid data is continued to monitor, if data interlock state changes but without whole losing locks, is counted again
Link error rates select the valid data access for supporting duplex.
8. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: institute
The fault-tolerant ability and bit error rate threshold for stating the first equipment and the second equipment room link can match.
9. the method according to claim 1 for realizing auto-negotiation function in opposite end in high speed Serdes, it is characterised in that: also
It include: after auto-negotiation success, if carrying out raising frequency or frequency reducing to link, pending data goes to step S2 after stablizing the time, starts
A new wheel auto-negotiation.
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| KR20230069208A (en) * | 2020-09-19 | 2023-05-18 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Communication link initialization method and device |
| CN114615167B (en) * | 2022-03-17 | 2024-06-18 | 苏州盛科通信股份有限公司 | Monitoring method for establishing link connection for negotiation and intelligent network equipment |
| CN114356811B (en) * | 2022-03-17 | 2022-06-07 | 苏州浪潮智能科技有限公司 | Communication link updating method, device and related equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859155A (en) * | 2005-07-02 | 2006-11-08 | 华为技术有限公司 | Link state self consulting method |
| CN102546289A (en) * | 2011-11-28 | 2012-07-04 | 曙光信息产业(北京)有限公司 | Device and method for guaranteeing normal communication of Ethernet |
| CN103124195A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司第六三一研究所 | Method for implementing fiber channel link speed negotiation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8375201B2 (en) * | 2009-03-05 | 2013-02-12 | Applied Micro Circuits Corporation | Ethernet PHY level security |
| US9304950B2 (en) * | 2012-09-12 | 2016-04-05 | Broadcom Corporation | Overclocked line rate for communication with PHY interfaces |
| US9455867B2 (en) * | 2013-11-26 | 2016-09-27 | Broadcom Corporation | Automatic configuration of a repeater |
-
2015
- 2015-11-26 CN CN201510844041.3A patent/CN106802876B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859155A (en) * | 2005-07-02 | 2006-11-08 | 华为技术有限公司 | Link state self consulting method |
| CN103124195A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司第六三一研究所 | Method for implementing fiber channel link speed negotiation |
| CN102546289A (en) * | 2011-11-28 | 2012-07-04 | 曙光信息产业(北京)有限公司 | Device and method for guaranteeing normal communication of Ethernet |
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