CN105718413B - A kind of channel alignment schemes, apparatus and system - Google Patents
A kind of channel alignment schemes, apparatus and system Download PDFInfo
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- CN105718413B CN105718413B CN201610025318.4A CN201610025318A CN105718413B CN 105718413 B CN105718413 B CN 105718413B CN 201610025318 A CN201610025318 A CN 201610025318A CN 105718413 B CN105718413 B CN 105718413B
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- 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 discloses a kind of channel alignment schemes, apparatus and system, and this method includes that a main channel is determined from channel set to be aligned, other are secondary channels；And identical alignment clock is configured to each channel, each channel reception data are transformed into the clock of the alignment clock and is stored in caching；If main channel, which receives in data, detects alignment field, according to the data cached alignment field searches range of each secondary channels of alignment field configuration detected, and detect each secondary channels it is data cached in whether have alignment field within the scope of corresponding alignment field searches；For main channel it is data cached and detect alignment field secondary channels it is data cached, according to the alignment field and current read buffer data address detected, read buffer data address is adjusted, according to the read buffer data address after adjustment, the read buffer data since the position of corresponding alignment field.The present invention solves the problems, such as that existing channel alignment scheme is incomplete by above technical scheme.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of channel alignment schemes, apparatus and systems.
Background technology
In high speed serialization receive-transmit system, Physical Coding Sublayer (physical coding sub-layer, PCS) is completed
The transmitting-receiving of data flow provides the functions such as coding, decoding, the alignment of the data flow in one or more channel.Generally require support
Popular serial protocol, such as 1 gigabit Ethernet, 10 gigabit Ethernets (XAUI), PCI Express, Serial,
RapidIO, SMPTE (The Society of Motion Picture and Television Engineers) support nothing
Wire protocol, such as CPRI, OBSAI are easier to realize support various protocols for single channel, but to two or two
For above channel, since the clock phase of each routing restoration is inconsistent, the alignment characters of different agreement, protocol requirement
The region of search etc. is all inconsistent, and along with stone working clock frequency is higher, channel alignment realizes that difficulty is larger.
Prior art, including below step：The data that multichannel reaches are detected, according to the alignment field control detected
Make the caching of each channel data；Data are read since the initial position for caching each channel data simultaneously.This scheme has to examine
It after measuring alignment field can just start that data are written, and the data ability in each channel is removed in the additional control of needs when being aligned failure
It realigns, these all have particular requirement to data format, and need additional control, from hardware realization underaction.
Invention content
A kind of channel alignment schemes of present invention offer, apparatus and system, it is incomplete to solve existing channel alignment scheme
Problem.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of channel alignment schemes, including：
A main channel is determined from channel set to be aligned, other are secondary channels；And configure identical alignment to each channel
Each channel reception data are transformed into the clock of the alignment clock and are stored in caching by clock；
It is slow according to each secondary channels of alignment field configuration detected if main channel, which receives, detects alignment field in data
The alignment field searches range of deposit data, and detect each secondary channels it is data cached in be within the scope of corresponding alignment field searches
It is no to have alignment field；
For main channel it is data cached and detect alignment field secondary channels it is data cached, according to the alignment word detected
Section and current read buffer data address adjust read buffer data address, according to the read buffer data address after adjustment, to reply
The position of neat field starts read buffer data.
In some embodiments, during by each channel reception data deposit caching, further include：Detect each channel reception
Testing result and each channel reception data are stored in caching by the alignment field in data together；
Whether there is alignment field tool during each secondary channels of detection are data cached within the scope of corresponding alignment field searches
Body is：According to the testing result in caching detect each secondary channels it is data cached within the scope of corresponding alignment field searches whether
There is alignment field.
In some embodiments, described to be specially to the identical alignment clock of each channel configuration：Data are received from main channel
The middle recovered clock for obtaining main channel, configures the alignment clock in each channel to the recovered clock of main channel.
In some embodiments, if the main channel, which receives, detects alignment field in data, according to pair detected
The data cached alignment field searches range of neat each secondary channels of field configuration, and detect each secondary channels it is data cached in corresponding
Alignment field searches within the scope of whether have alignment field be specially：
If main channel receives and detects alignment field in data, main channel notifies neighboring later stage secondary channels, after described
After level-one secondary channels receive notice, continue notice rear stage secondary channels again, until each secondary channels in the channel set to be aligned
It is notified；And it is auxiliary that notified each secondary channels receive the alignment field configuration sheet detected in data according to main channel
The data cached alignment field searches range in channel, in the same time, each secondary channels detect this secondary channels it is data cached in right
Whether there is alignment field within the scope of the alignment field searches answered.
In some embodiments, above-mentioned channel alignment schemes further include preserving following information：The alignment word of each alignment channel
Read buffer data address behind the position of section, and adjustment；Or the offset of read buffer data address.
In some embodiments, above-mentioned channel alignment schemes further include before preserving above- mentioned information：It is waited for described in judgement pair
Whether each channel completes the adjustment of read buffer data address in neat channel set；If so, entering the step of preserving above- mentioned information.
A kind of channel alignment means, including：
Determining module, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock configuration module, for configuring identical alignment clock to each channel；
Conversion module, the clock domain for each channel reception data to be transformed into the alignment clock；
Writing module is cached, for will be cached through the transformed each channel reception data deposit of clock domain；
Main channel is aligned field detection module, for detecting the alignment field in main channel reception data；
Range configuration module detects alignment field, according to the alignment detected if being received for main channel in data
The data cached alignment field searches range of each secondary channels of field configuration；
Secondary channels be aligned field detection module, for detect each secondary channels it is data cached in corresponding alignment field searches
Whether alignment field is had in range；
Cache read module, for for main channel it is data cached and detect alignment field secondary channels it is data cached,
According to the alignment field and current read buffer data address detected, read buffer data address is adjusted, it is slow according to the reading after adjustment
Deposit data address, the read buffer data since the position of corresponding alignment field.
In some embodiments, secondary channels alignment field detection module includes：
Each secondary channels are received the process of data write-in caching for the caching writing module by the first detection sub-module
In, the alignment field in each secondary channels reception data is detected, testing result is obtained；
Second detection sub-module, for according to the testing result in caching detect corresponding secondary channels it is data cached in
Whether there is alignment field within the scope of corresponding alignment field searches；
The caching writing module is used to the testing result and each secondary channels receiving data is stored in caching together.
In some embodiments, the clock configuration module, which is specifically used for receiving from main channel, obtains main channel in data
Recovered clock configures the alignment clock in each channel to the recovered clock of main channel.
In some embodiments, above-mentioned channel alignment means, further include preserving module, pair for preserving each alignment channel
The position of neat field, and the read buffer data address after adjustment；Or preserve the offset of read buffer data address.
In some embodiments, above-mentioned channel alignment means, further include judgment module, for judging the channel to be aligned
Concentrate whether each channel completes the adjustment of read buffer data address；If so, the preserving module is notified to carry out above- mentioned information
It preserves.
A kind of channel alignment, including：
Determination unit, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock dispensing unit, for configuring identical alignment clock to each channel；
Converting unit, the clock domain for each channel reception data to be transformed into the alignment clock；
Main channel processing unit, for data deposit caching, detection master will to be received through the transformed main channel of clock domain
Alignment field in channel reception data notifies that neighboring later stage is auxiliary if main channel, which receives in data, detects alignment field
Channel；It is additionally operable to, according to the alignment field and current read buffer data address that detect, read buffer data address be adjusted, according to tune
Read buffer data address after whole, the read buffer data since the position of corresponding alignment field；
At least one secondary channels processing unit, each secondary channels processing unit is used for will be auxiliary logical through transformed of clock domain
Road receives data deposit caching, after receiving notice, to rear stage secondary channels transmission notice again until afterbody secondary channels；Root
The data cached alignment field searches range of alignment field configuration this secondary channels detected in data is received according to main channel, is detected
Whether there is alignment field within the scope of corresponding alignment field searches during this secondary channels is data cached；It is additionally operable to what basis detected
It is aligned field and current read buffer data address, adjusts read buffer data address, according to the read buffer data address after adjustment, from
The position of corresponding alignment field starts read buffer data.
In some embodiments, each secondary channels processing unit is specifically used for receiving this secondary channels into the mistake of data write-in caching
Cheng Zhong detects the alignment field in each secondary channels reception data, obtains testing result, the testing result and this secondary channels are connect
It receives data and is stored in caching together；And according to the testing result in caching detect this secondary channels it is data cached in corresponding
Whether there is alignment field within the scope of alignment field searches.
In some embodiments, main channel processing unit, each secondary channels processing unit are additionally operable to preserve the alignment detected
Read buffer data address behind the position of field, and adjustment；Or preserve the offset of read buffer data address.
In some embodiments, main channel processing unit is additionally operable to receive the grade that each secondary channels processing unit passes through interchannel
The feedback information for joining signal transmission, judges according to the feedback information of each secondary channels processing unit in the channel set to be aligned
Whether all channels, which complete, is aligned.
The present invention only detects alignment word by distinguishing main channel and secondary channels, secondary channels in main channel receives data
Duan Hou just starts to have detected whether alignment field within the scope of corresponding alignment field searches, finally, finds each of alignment field
Channel (including main channel) adjusts the address of read buffer data by alignment of data.As long as secondary channels receive data and are connect with main channel
Data are received there are corresponding offset, when losing alignment or data packet format changes etc., need not additionally emptied the cache, you can real
It is now constantly aligned with main channel, the flexibility of design is increased while not increasing design complexities.
Further, synchronous to detect in each channel reception data during being cached to each channel reception data
Alignment field, for each secondary channels, then by testing result and each secondary channels receive data together be stored in caching, connect in main channel
It receives after detecting alignment field in data, for each secondary channels, then by caching within the scope of corresponding alignment field searches
The testing result detected whether alignment field, further improve the detection efficiency of alignment field, improve alignment effect
Rate.
Further, the address of read buffer data will be adjusted in each channel (including main channel) for finding alignment field to be counted
The position for preserving corresponding alignment field after alignment and the read buffer data address after adjustment；Or preserve read buffer
The offset of data address.So if since channel failure or other reasons lose alignment, do not need to remove channel
Data, it is only necessary to recalculate offset.
Furthermore, it is possible to using the cascade signal transmitted in interchannel, the alignment of multichannel is realized.Specifically：It examines main channel
It measures after having alignment field in this main channel reception data, main channel notifies rear stage secondary channels, the rear stage secondary channels to receive
To after notice, continue notice rear stage secondary channels again, until each secondary channels are notified in channel set to be aligned；It is notified
Each secondary channels are while notified or delay certain time receives the alignment field that detects in data according to main channel
Configure the data cached alignment field searches range of this secondary channels, and detect this secondary channels it is data cached in corresponding alignment word
Whether section has alignment field in search range, and finally, each channel can read according to the alignment field detected and currently slow simultaneously
Deposit data address adjusts read buffer data address, according to the read buffer data address after adjustment, from the position of corresponding alignment field
Start read buffer data, realizes channel alignment.
Description of the drawings
Fig. 1 is the flow chart for the channel alignment schemes that one embodiment of the invention provides；
Fig. 2 is the flow chart for the channel alignment schemes that another embodiment of the present invention provides；
Fig. 3 is the schematic diagram for the channel alignment means that one embodiment of the invention provides；
Fig. 4 is the schematic diagram for the channel alignment that one embodiment of the invention provides.
Specific implementation mode
Channel set to be aligned in the present invention can be all channels or passage portion in system, include at least two
A channel.Data can not form correct data packet before alignment of data, in order to realize alignment, in the data in each channel
It would generally be embedded in special alignment field at certain intervals, since the interchannel received has offset, data are generally advanced
The reading address realization that row caching adjusts read buffer data again goes to deviate.
The design of the present invention is further described below by specific embodiment.
As shown in Figure 1, the flow chart of the channel alignment schemes provided for one embodiment of the invention, includes mainly following step
Suddenly：
S101, a main channel is determined from channel set to be aligned, other are secondary channels；And it is configured to each channel identical
It is aligned clock, each channel reception data are transformed into the clock of the alignment clock and is stored in caching.
Preferably, the mode of identical alignment clock, Ke Yiwei are configured：It is received from main channel and obtains main channel in data
Recovered clock configures the alignment clock in each channel to the recovered clock of main channel.It configures identical alignment clock and can allow and wait for
All channels that alignment channel is concentrated are under the same alignment clock, convenient for being controlled by the detection of the alignment field to main channel
Make the alignment in each channel.The mode that the recovered clock that main channel is obtained in data is received from main channel can be received from main channel
The recovered clock of main channel is recovered in data.
Each channel reception data are transformed into the clock of the alignment clock and are stored in caching and are specifically as follows：By each channel
It receives data and passes through asynchronous buffer module, the clock of write-in is the recovered clock in this channel, reads data then using by step
S101 matches the alignment clock postponed, can complete clock domain conversion in this way, the reception data in each channel are in the case where being aligned clock.
And then it will be through the transformed each channel reception data deposit caching of clock domain.
Asynchronous buffer module for example can be that asynchronous FIFO (First Input First Output) or asynchronous address autoincrement type are deposited at random
Access to memory (RAM).
If S102, main channel, which receive, detects alignment field in data, each auxiliary according to the alignment field configuration detected
The data cached alignment field searches range in channel, and detect each secondary channels it is data cached in corresponding alignment field searches model
Whether there is alignment field in enclosing.
In step S101, during each channel reception data are stored in caching, each channel of detection can be synchronized and connect
The alignment field in data is received, for secondary channels, then testing result and reception data are stored in caching together, in this case,
In step S102, can according to the testing result in caching, come detect each secondary channels it is data cached in corresponding alignment field
Whether alignment field is had in search range, due to having carried out the detection of alignment field, step in step s 102
S102 is detected according to testing result can improve efficiency.
The data cached alignment field searches range of each secondary channels, the alignment that can be detected in channel reception data based on
The range of the front and back certain amplitude of field, front and back amplitude can be manually set.It ensure that secondary channels are the alignment words in main channel
Search alignment field, front and back amplitude are configured in combination with the case where channel offset in front and back a certain range of section.
Preferably, in the substantially same time, detect each secondary channels it is data cached in corresponding alignment field searches range
Inside whether there is alignment field.
S103, it is data cached for main channel and detect alignment field secondary channels it is data cached, according to what is detected
It is aligned field and current read buffer data address, adjusts read buffer data address, according to the read buffer data address after adjustment, from
The position of corresponding alignment field starts read buffer data.Preferably, each channel adjusts read buffer data address, is aligned word from corresponding
The action of the position read buffer data of section is substantially in the same time.
In the step, detects that the secondary channels of alignment field are realized and be aligned with main channel.Preferably, to having detected that
It is aligned secondary channels and the main channel of field, further includes preserving following information：Behind the position of corresponding alignment field and adjustment
Read buffer data address；Or the offset of read buffer data address.The step is for alignment channel, after having locked adjustment
Read buffer data address or read buffer data address offset.So if since channel failure or other reasons lose
Alignment has been gone, has not needed to remove channel data, it is only necessary to recalculate offset.
Preferably, before preserving above- mentioned information, further include：Judge whether each channel completes to read in channel set to be aligned
The adjustment of data cached address；If so, illustrating that all channels in channel set to be aligned are completed alignment, preservation is entered back into
The step of above- mentioned information.The step is to relock the read buffer after each channel adjustment after determining that alignment is all realized in all channels
The offset of data address or read buffer data address.
The present embodiment is by distinguishing main channel and secondary channels, the secondary channels only alignment in detecting that main channel receives data
Just data and main channel are aligned by search alignment field, the address for adjusting read buffer data after field.As long as secondary channels receive
Data and main channel receive data there are corresponding offset, need not be additional when losing alignment or data packet format changes etc.
It empties the cache, you can realization is constantly aligned with main channel.The flexibility of design is increased while not increasing design complexities.
In another embodiment, the cascade signal transmitted in interchannel may be used, realize the alignment of multichannel.Such as Fig. 2
It is shown, it mainly includes the following steps that：
S201, a main channel is determined from channel set to be aligned, other are secondary channels.
S202, recovered clock is recovered from main channel reception data, configures the alignment clock of main channel to its recovery
Clock；By the cascade signal of interchannel, the alignment clock of main channel is passed into neighboring later stage secondary channels, rear stage is auxiliary logical
Road configures the alignment clock of this secondary channels on the alignment clock of main channel, and so on, then rear stage secondary channels will be originally auxiliary logical
The alignment clock in road is configured to the alignment clock of previous stage secondary channels, until the configuration of alignment clock is all completed in all channels.This
The alignment clock in each channel is just realized unification by sample.
S203, the clock domain for being aligned clock that each channel reception data are transformed into this channel, then will turn through clock domain
Each channel reception data deposit caching after changing, and synchronously, the alignment field in each channel reception data is detected, for auxiliary logical
Testing result is then stored in caching by road together with this channel reception data.
S204, main channel are detected after having alignment field in this main channel reception data, then have set detection successfully mark
Signal, and the marking signal is being transferred to rear stage secondary channels, after which receives notice, continue after again
Level-one secondary channels transmit the marking signal, until each secondary channels receive the marking signal in channel set to be aligned.
S205, etc. after all secondary channels all receive the marking signal, in the substantially same time, each secondary channels are according to main channel
The data cached alignment field searches range of alignment field configuration this secondary channels detected in data is received, and according in caching
Testing result detect this secondary channels it is data cached in whether have alignment field within the scope of corresponding alignment field searches.In order to
Ensure each channel while adjusting read buffer data address.
The alignment field searches range of configuration ensure that secondary channels are a certain ranges before and after the alignment field of main channel
Interior search is aligned field, and the range of search is configured in combination with the case where channel offset.
S206, main channel and the secondary channels for detecting alignment field, in the substantially same time, according to the alignment word detected
Section and current read buffer data address adjust read buffer data address, according to the read buffer data address after adjustment, to reply
The position of neat field starts read buffer data.
In addition, detecting secondary channels and the main channel of alignment field, position and the adjustment of corresponding alignment field are recorded
Read buffer data address afterwards；Or the offset of read buffer data address.
The alignment of data of each secondary channels and main channel that detect alignment field is realized to this.It can also pass into step
S207。
S207, the cascade signal according to interchannel, all secondary channels are to main channel feedback information, and main channel is according to all auxiliary
The feedback information in channel judges whether all channels are completed alignment, if it is, thinking the institute in channel set to be aligned
Having channel to be aligned successfully notifies each secondary channels to lock the information recorded in step S206, maintains the alignment of multichannel.
Fig. 3 is the schematic diagram for the channel alignment means that one embodiment of the invention provides, and channel alignment means include：
Determining module 31, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock configuration module 32, for configuring identical alignment clock to each channel；
Conversion module 34, the clock domain for each channel reception data to be transformed into the alignment clock；
Writing module 33 is cached, for will be cached through the transformed each channel reception data deposit of clock domain；
Main channel is aligned field detection module 35, for detecting the alignment field in main channel reception data；
Range configuration module 36 detects alignment field, according to pair detected if being received for main channel in data
The data cached alignment field searches range of each secondary channels of neat field configuration；
Secondary channels are aligned field detection module 37, for detect each secondary channels it is data cached in search in corresponding alignment field
Whether alignment field is had within the scope of rope；
Cache read module 38, for for main channel it is data cached and detect alignment field secondary channels cache number
According to according to the alignment field and current read buffer data address detected, adjustment read buffer data address, according to the reading after adjustment
Data cached address, the read buffer data since the position of corresponding alignment field.
In some embodiments, secondary channels alignment field detection module 37 includes：
First detection sub-module, during caching writing module 33 by each secondary channels reception data write-in caching,
The alignment field in each secondary channels reception data is detected, testing result is obtained；
Second detection sub-module, for according to the testing result in caching detect corresponding secondary channels it is data cached in
Whether there is alignment field within the scope of corresponding alignment field searches；
Caching writing module 33 is used to the testing result and each secondary channels receiving data is stored in caching together.
In some embodiments, clock configuration module 32, which is specifically used for receiving from main channel, obtains the extensive of main channel in data
Multiple clock, configures the alignment clock in each channel to the recovered clock of main channel.
In some embodiments, above-mentioned channel alignment means further include preserving module, pair for preserving each alignment channel
The position of neat field, and the read buffer data address after adjustment；Or preserve the offset of read buffer data address.
In some embodiments, above-mentioned channel alignment means further include judgment module, for judging the channel to be aligned
Concentrate whether each channel completes the adjustment of read buffer data address；If so, above-mentioned preserving module is notified to carry out above- mentioned information
It preserves.
Channel alignment means provided by the invention can be independently of the entity being arranged except each channel, to each channel
Data buffer storage, the detection for being aligned field, the configuration for being aligned clock, the configuration for being aligned field searches range, read buffer data address
Adjust, data cached reading etc. is uniformly controlled.Alternatively, the modules in channel alignment means provided by the invention
It is separately positioned in different entities；Or which part module is associated with channel, is arranged in a one-to-one correspondence with channel.
Fig. 4 is the schematic diagram for the channel alignment that one embodiment of the invention provides, and channel alignment includes：
Determination unit 41, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock dispensing unit 42, for configuring identical alignment clock to each channel；
Converting unit 43, the clock domain for each channel reception data to be transformed into the alignment clock；
Main channel processing unit 44, for data deposit caching, detection will to be received through the transformed main channel of clock domain
Main channel receives the alignment field in data, if main channel, which receives in data, detects alignment field, notifies neighboring later stage
Secondary channels；It is additionally operable to, according to the alignment field and current read buffer data address that detect, adjust read buffer data address, according to
Read buffer data address after adjustment, the read buffer data since the position of corresponding alignment field；
At least one secondary channels processing unit (451 to 45n), each secondary channels processing unit through clock domain for that will convert
This secondary channels afterwards receive data deposit caching, after receiving notice, to rear stage secondary channels transmission notice again up to last
Grade secondary channels；The data cached alignment field of alignment field configuration this secondary channels detected in data is received according to main channel to search
Rope range, detect this secondary channels it is data cached in whether have alignment field within the scope of corresponding alignment field searches；It is additionally operable to
According to the alignment field and current read buffer data address detected, read buffer data address is adjusted, it is slow according to the reading after adjustment
Deposit data address, the read buffer data since the position of corresponding alignment field.
In some embodiments, each secondary channels processing unit is specifically used for receiving this secondary channels into the mistake of data write-in caching
Cheng Zhong detects the alignment field in each secondary channels reception data, obtains testing result, the testing result and this secondary channels are connect
It receives data and is stored in caching together；And according to the testing result in caching detect this secondary channels it is data cached in corresponding
Whether there is alignment field within the scope of alignment field searches.
In some embodiments, main channel processing unit, each secondary channels processing unit are additionally operable to preserve the alignment detected
Read buffer data address behind the position of field, and adjustment；Or preserve the offset of read buffer data address.
In some embodiments, main channel processing unit is additionally operable to receive the grade that each secondary channels processing unit passes through interchannel
The feedback information for joining signal transmission judges own in the channel set to be aligned according to the feedback information of each secondary channels processing unit
Whether channel, which completes, is aligned.
Channel alignment provided by the invention, main channel processing unit 44 can be associated with setting with main channel, such as with
Other associated functional units of main channel are set together, and are arranged in same entity.Each secondary channels processing unit (451 to
Setting can also 45n) be associated with secondary channels, secondary channels processing unit is arranged in a one-to-one correspondence with secondary channels, such as auxiliary logical with some
The corresponding secondary channels processing unit in road can be set together with other associated functional units of the secondary channels, be arranged same
In one entity.Determination unit 41, clock dispensing unit 42, converting unit 43 can be independently of being arranged except each channel.The present invention
The channel alignment of offer uses the cascade signal transmitted in interchannel, realizes the alignment of multichannel.
The above content is combining, specific embodiment is made for the present invention to be further described, and it cannot be said that this hair
Bright specific implementation is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, it is not taking off
Under the premise of from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the protection of the present invention
Range.
Claims (15)
1. a kind of channel alignment schemes, which is characterized in that including：
A main channel is determined from channel set to be aligned, other are secondary channels；And identical alignment clock is configured to each channel,
Each channel reception data are transformed into the clock of the alignment clock and are stored in caching；
If main channel, which receives, detects alignment field in data, according to each secondary channels caching number of the alignment field configuration detected
According to alignment field searches range, and detect each secondary channels it is data cached in whether have within the scope of corresponding alignment field searches
It is aligned field；
It is data cached and detect that the secondary channels of alignment field are data cached for main channel, according to the alignment field that detects and
Current read buffer data address, adjusts read buffer data address, and according to the read buffer data address after adjustment, word is aligned from corresponding
The position of section starts read buffer data.
2. channel alignment schemes as described in claim 1, which is characterized in that by the process of each channel reception data deposit caching
In, further include：The alignment field in each channel reception data is detected, testing result and each channel reception data are stored in together slow
It deposits；
Whether have within the scope of corresponding alignment field searches during each secondary channels of the detection are data cached and is aligned field and is specially：
According to the testing result in caching detect each secondary channels it is data cached in whether have within the scope of corresponding alignment field searches pair
Neat field.
3. channel alignment schemes as described in claim 1, which is characterized in that described to configure identical alignment clock to each channel
Specially：The recovered clock for obtaining main channel in data is received from main channel, configures the alignment clock in each channel to main channel
Recovered clock.
4. channel alignment schemes as described in claim 1, which is characterized in that detected pair in data if the main channel receives
Neat field then according to the data cached alignment field searches range of each secondary channels of alignment field configuration detected, and detects each
Whether there is within the scope of corresponding alignment field searches the alignment field to be specially during secondary channels are data cached：
If main channel receives and detects alignment field in data, main channel notifies neighboring later stage secondary channels, the rear stage
After secondary channels receive notice, continue notice rear stage secondary channels again, until each secondary channels are received in the channel set to be aligned
To notice；And notified each secondary channels receive alignment field configuration this secondary channels detected in data according to main channel
Data cached alignment field searches range, in the same time, each secondary channels detect this secondary channels it is data cached in corresponding
Whether there is alignment field within the scope of alignment field searches.
5. channel alignment schemes according to any one of claims 1 to 4, which is characterized in that further include preserving following information：
Read buffer data address behind the position of the alignment field of each alignment channel, and adjustment；Or read buffer data address is inclined
Shifting amount.
6. channel alignment schemes as claimed in claim 5, which is characterized in that before preserving above- mentioned information, further include：Judge
Whether each channel completes the adjustment of read buffer data address in the channel set to be aligned；Above-mentioned letter is preserved if so, entering
The step of breath.
7. a kind of channel alignment means, which is characterized in that including：
Determining module, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock configuration module, for configuring identical alignment clock to each channel；
Conversion module, the clock domain for each channel reception data to be transformed into the alignment clock；
Writing module is cached, for will be cached through the transformed each channel reception data deposit of clock domain；
Main channel is aligned field detection module, for detecting the alignment field in main channel reception data；
Range configuration module detects alignment field, according to the alignment field detected if being received for main channel in data
Configure the data cached alignment field searches range of each secondary channels；
Secondary channels be aligned field detection module, for detect each secondary channels it is data cached in corresponding alignment field searches range
Inside whether there is alignment field；
Cache read module, for for main channel it is data cached and detect alignment field secondary channels it is data cached, according to
The alignment field and current read buffer data address detected adjusts read buffer data address, according to the read buffer number after adjustment
According to address, the read buffer data since the position of corresponding alignment field.
8. channel alignment means as claimed in claim 7, which is characterized in that secondary channels are aligned field detection module and include：
First detection sub-module, during each secondary channels are received data write-in caching for the caching writing module, inspection
The alignment field in each secondary channels reception data is surveyed, testing result is obtained；
Second detection sub-module, for according to the testing result in caching detect corresponding secondary channels it is data cached in right
Whether there is alignment field within the scope of the alignment field searches answered；
The caching writing module is used to the testing result and each secondary channels receiving data is stored in caching together.
9. channel alignment means as claimed in claim 7, which is characterized in that the clock configuration module is specifically used for from main logical
Road receives the recovered clock that main channel is obtained in data, configures the alignment clock in each channel to the recovered clock of main channel.
10. the channel alignment means as described in claim 7 to 9 any one, which is characterized in that further include preserving module, use
Read buffer data address behind the position for the alignment field for preserving each alignment channel, and adjustment；Or preserve read buffer number
According to the offset of address.
11. channel alignment means as claimed in claim 10, which is characterized in that further include judgment module, it is described for judging
Whether each channel completes the adjustment of read buffer data address in channel set to be aligned；If so, the preserving module is notified to protect
The read buffer data address behind the position of the alignment field of each alignment channel, and adjustment is deposited, or with preserving read buffer data
The offset of location.
12. a kind of channel alignment, which is characterized in that including：
Determination unit, for determining a main channel from channel set to be aligned, other are secondary channels；
Clock dispensing unit, for configuring identical alignment clock to each channel；
Converting unit, the clock domain for each channel reception data to be transformed into the alignment clock；
Main channel processing unit detects main channel for that will receive data deposit caching through the transformed main channel of clock domain
The alignment field in data is received, if main channel, which receives in data, detects alignment field, notifies neighboring later stage secondary channels；
It is additionally operable to, according to the alignment field and current read buffer data address that detect, read buffer data address be adjusted, after adjustment
Read buffer data address, the read buffer data since the position of corresponding alignment field；
At least one secondary channels processing unit, each secondary channels processing unit through transformed secondary channels of clock domain for that will connect
Data deposit caching is received, after receiving notice, to rear stage secondary channels transmission notice again until afterbody secondary channels；According to master
The data cached alignment field searches range of alignment field configuration this secondary channels for being detected in channel reception data, this is auxiliary for detection
Whether there is alignment field within the scope of corresponding alignment field searches during channel is data cached；It is additionally operable to according to the alignment detected
Field and current read buffer data address adjust read buffer data address, according to the read buffer data address after adjustment, from correspondence
The position of alignment field starts read buffer data.
13. channel alignment as claimed in claim 12, which is characterized in that each secondary channels processing unit is specifically used for inciting somebody to action this
During secondary channels receives data write-in caching, the alignment field in each secondary channels reception data is detected, testing result is obtained,
The testing result and this secondary channels are received into data and are stored in caching together；And it is detected according to the testing result in caching
Whether there is alignment field within the scope of corresponding alignment field searches during this secondary channels is data cached.
14. channel alignment as described in claim 12 or 13, which is characterized in that main channel processing unit, each secondary channels
Processing unit is additionally operable to preserve the position of the alignment field detected, and the read buffer data address after adjustment；Or it preserves
The offset of read buffer data address.
15. channel alignment as claimed in claim 14, which is characterized in that main channel processing unit is additionally operable to receive each auxiliary
The feedback information that channel processing unit is transmitted by the cascade signal of interchannel, according to the feedback of each secondary channels processing unit
Information judges whether all channels complete to be aligned in the channel set to be aligned.
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| CN107272822A (en) * | 2017-06-16 | 2017-10-20 | 郑州云海信息技术有限公司 | A kind of system clock monitoring method and device |
| CN108155964A (en) * | 2017-12-21 | 2018-06-12 | 南京理工大学 | FPGA multi-channel serial data dynamic alignment methods based on training sequence |
| CN109861807A (en) * | 2019-02-28 | 2019-06-07 | 烽火通信科技股份有限公司 | Logical channel alignment schemes and system under multi-channel mode |
| CN112600551B (en) * | 2020-12-17 | 2022-11-01 | 深圳市紫光同创电子有限公司 | Serdes interface circuit |
| CN112671526B (en) * | 2020-12-23 | 2021-09-17 | 宸芯科技有限公司 | Method, device and equipment for aligning wire pairs of physical coding sublayer PCS of Ethernet |
| CN113922876A (en) * | 2021-09-30 | 2022-01-11 | 中国船舶重工集团公司第七二四研究所 | Method for realizing multichannel optical fiber data alignment by utilizing multiple judgments |
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