CN102916776B - optical module parameter transmission method and device - Google Patents
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- CN102916776B CN102916776B CN201210390955.3A CN201210390955A CN102916776B CN 102916776 B CN102916776 B CN 102916776B CN 201210390955 A CN201210390955 A CN 201210390955A CN 102916776 B CN102916776 B CN 102916776B
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Abstract
The invention discloses a kind of optical module and parameter transmission method thereof and device, described method comprises: after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, then the backup parameter of this parameter stored in backup parameter register sent to described main frame; Otherwise, this parameter stored in parameter register is sent to described main frame; Wherein, described parameter register and backup parameter register are multibyte, and the described mark that upgrades was set before upgrading the parameter stored in described parameter register, and the parameter stored in described parameter register is reset after upgrading.Due to when upgrading the parameter gathered, renewal mark is carried out set, according to the renewal mark of set, can prevent main frame from from the new argument register upgraded, reading parameter mistakenly, thus improve parameter is transferred to main frame reliability from optical module.
Description
Technical field
The present invention relates to Fibre Optical Communication Technology, particularly relate to a kind of optical module parameter transmission method and device.
Background technology
Current domestic market and international market, the optical fiber communication direction of merging with multiple business with a large bandwidth and at a high rate has started application; In numerous solutions, the appearance of fiber to the home (FTTH) is just considered to the ultimate solution of broadband access.
FTTH network usually as shown in Figure 1, the OLT(Optical Line Terminal of central office, optical line terminal) by ODN(light feeder network) and POS(Passive Optical Splitter, passive optical splitters) be connected, POS is usually referred to as Splitter(optical splitter), generally have 2N to divide equally port, if the light intensity of its uplink port input is 1, then the light intensity that its each downlink port exports is 1/N.For a FTTH network, be generally that 1 OLT is placed on telecommunication center office, then by optical splitter, be at least generally 1 point 32, or 1 point 64 even 1 point 128, namely 1 OLT is with 32 or 64 or 128 ONU(Optical Network Unit, optical network unit).Each ONU comprises an ONU optical module and an ONU system equipment, ONU system equipment is connected with ONU optical module, ONU system equipment is connected with the ustomer premises access equipment in family or in office, in order to receive the signal of telecommunication that ustomer premises access equipment sends, be sent to OLT in the upstream direction after being converted to light signal by ONU optical module, and the light signal that ONU optical module receives is converted to the receivable signal of telecommunication of ustomer premises access equipment and sends to ustomer premises access equipment.
Usually, in OLT and ONU, be all provided with optical module, in order to carry out the mutual conversion of light signal and the signal of telecommunication.In OLT or ONU, optical module can communicate with the main frame in OLT or ONU.Such as, in ONU, ONU optical module is communicated with ONU system equipment by iic bus; In OLT, OLT optical module is communicated with OLT system equipment by iic bus.
For ease of describing, ONU optical module and OLT optical module are referred to as optical module herein; By the ONU system equipment communicated with optical module in ONU, and the OLT system equipment communicated with optical module in OLT is referred to as main frame.
Generally speaking, optical module all needs to have digital diagnosis function; Digital diagnosis function comprises temperature, supply voltage, transmitting bias current, utilizing emitted light power and the isoparametric collection of received optical power and renewal; Each parameter is stored in the register of two or more bytes usually.In order to the current state allowing main frame can read optical module at any time, optical module needs the parameter value often upgraded in register.
But the present inventor finds, main frame often reads the parameter value of mistake when reading the parameter in optical module.Such as, optical module can change gathering the result changed after received power in a small scope, such as when received power is 25.6uW(-15.92dBm) time, the parameter values that optical module gathers can at 0x00FF(-15.93dBm) and 0x0100(-15.92dBm) to change between this 2 number; When main frame reads parameter from optical module, if read 0x00FF or 0x0100, then read correct parameter; But main frame, except reading these 2 numerical value, also may read 2 wrong value 0x0000 and 0x01FF.
Therefore, the optical module parameter transmission method of prior art there will be the phenomenon of main frame read error parameter, has the needs further improving optical module parameter transmission reliability.
Summary of the invention
The embodiment provides a kind of optical module parameter transmission method and device, in order to improve optical module parameter transmission reliability.
According to an aspect of the present invention, provide a kind of optical module parameter transmission method, comprising:
After the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, then the backup parameter of this parameter stored in backup parameter register sent to described main frame; Otherwise, this parameter stored in parameter register is sent to described main frame;
Wherein, described parameter register and backup parameter register are multibyte, and the described mark that upgrades was set before upgrading the parameter stored in described parameter register, and the parameter stored in described parameter register is reset after upgrading.
Wherein, the described backup parameter of this parameter stored in backup parameter register transmission to described main frame is specially:
When described main frame reads the high byte of described parameter, before the high byte of the backup parameter will stored in described backup parameter register sends to described main frame, first by the backup parameter read-in that stores in described backup parameter register in buffering area;
When described main frame reads the low byte of described parameter, the low byte of the backup parameter stored in described buffer area is sent to described main frame.
Described this parameter stored in parameter register transmission to described main frame is specially:
When described main frame reads the high byte of described parameter, before the high byte of the parameter will stored in described parameter register sends to described main frame, first by the parameter read-in that stores in described parameter register in buffer area;
When described main frame reads the low byte of described parameter, the low byte of the parameter stored in described buffer area is sent to described main frame.
Further, after described renewal mark is reset, also comprise:
According to the parameter after the renewal stored in described parameter register, upgrade the backup parameter stored in described backup parameter register.
According to another aspect of the present invention, additionally provide a kind of optical module parameter transmitting device, comprising:
Parameter sending module, for after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, then the backup parameter of this parameter stored in backup parameter register sent to described main frame; Otherwise, this parameter stored in parameter register is sent to described main frame;
Parameter update module, for before upgrading in described parameter register the parameter stored by described renewal flag set, by described renewal Flag Reset after upgrading the parameter stored in described parameter register.
Wherein, described parameter sending module comprises: upgrade mark confirmation unit, the first transmitting element and the second transmitting element;
Wherein, the described mark confirmation unit that upgrades is used for after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, and sends the first notice to the first transmitting element; Otherwise, send the second notice to the second transmitting element;
First transmitting element is used for after receiving the first notice, the backup parameter of this parameter stored in backup parameter register is sent to described main frame;
Second transmitting element is used for after receiving the second notice, this parameter stored is sent to described main frame in parameter register.
Described first transmitting element comprises:
High byte sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the backup parameter stored in described backup parameter register is sent to described main frame;
Parameter buffer memory subelement, for when described main frame reads the high byte of described parameter, by the backup parameter read-in that stores in described backup parameter register in buffer area;
Low byte sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the backup parameter stored in described buffer area to described main frame.
Described second transmitting element comprises:
High byte sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the parameter stored in described parameter register is sent to described main frame;
Parameter buffer memory subelement, for when described main frame reads the high byte of described parameter, by the parameter read-in that stores in described parameter register in buffer area;
Low byte sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the parameter stored in described buffer area to described main frame.
Further, parameter update module, also for by after described renewal Flag Reset, according to the parameter after the renewal stored in described parameter register, upgrades the backup parameter stored in described backup parameter register.
Described device is arranged in optical module for optical network unit, and described main frame is specially optical network unit system equipment; Or
Described device is arranged in optical line terminal optical module, and described main frame is OLT system equipment; And
Described parameter is specially bias current parameter or utilizing emitted light power parameter or received optical power parameter.
In the optical module that the embodiment of the present invention provides, due to when upgrading the parameter gathered, renewal mark is carried out set, according to the renewal mark of set, can prevent main frame from from the new argument register upgraded, reading parameter mistakenly, simultaneously due to the backup parameter stored in backup parameter register is sent to main frame, can ensure that main frame reads correct parameter, improve the accuracy that main frame reads optical module parameter, improve parameter is transferred to main frame reliability from optical module.
Further, optical module is in the process sending multibyte parameter or backup parameter to main frame, in order to prevent that parameter or backup parameter more new events occur in transmission data procedures, and cause the data sending mistake, optical module, when sending high byte data to main frame, is namely deposited into buffer area the low byte data of parameter or backup parameter; Afterwards, by the low byte in buffer area to Host Transfer; Like this, even if optical module upgrades parameter or backup parameter, the low byte of parameter or backup parameter is caused to there occurs change, also optical module can not be hindered the low byte data in buffer area, ensure that main frame reads the accuracy of optical module parameter, improve parameter is transferred to main frame reliability from optical module.
Accompanying drawing explanation
Fig. 1 is the FTTH network diagram of prior art;
Fig. 2 is the optical module parameter transmission method flow chart of the embodiment of the present invention;
Fig. 3 is the method flow diagram of optical module to main frame transmission parameter of the embodiment of the present invention;
Fig. 4 is that the optical module of the embodiment of the present invention sends the method flow diagram backing up parameter to main frame;
Fig. 5 is the optical module parameter transmitting device internal structure block diagram of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, enumerate preferred embodiment referring to accompanying drawing, the present invention is described in more detail.But it should be noted that, the many details listed in specification are only used to make reader to have a thorough understanding, even if do not have these specific details also can realize these aspects of the present invention to one or more aspect of the present invention.
The term such as " module " used in this application, " system " is intended to comprise the entity relevant to computer, such as but not limited to hardware, firmware, combination thereof, software or executory software.Such as, module can be, but be not limited in: the thread of the process that processor runs, processor, object, executable program, execution, program and/or computer.
The phenomenon of the present inventor to the main frame read error parameter value occurred in prior art is analyzed, and finds that mainly containing the following two kinds reason causes this phenomenon:
One of them reason is, in the process that optical module upgrades parameter, for storing the multibyte register of this parameter, the value stored in some registers (such as high byte register) have updated, the value stored in some registers (such as low byte register) does not also upgrade, now, main frame reads this parameter and there will be the phenomenon reading wrong parameter.Generally speaking, a byte comprises 8 bits (bit).
Another reason is, main frame is reading in the process of parameter from optical module, and after have read the partial bytes numerical value of this parameter, optical module carries out the renewal of this parameter, thus causes main frame to read the parameter of mistake.
Based on above-mentioned analysis, in technical scheme of the present invention, adopt the reliability of the accuracy of the parameter improving main frame reading with the following method, optical module parameter transmission: the parameter that needs each in optical module are read by main frame, except adopting parameter register to store except this parameter, a backup parameter register is also adopted to store the backup parameter of this parameter; Further, the renewal mark of this parameter is also set.Be set before the parameter that this renewal mark stores in optical module undated parameter register, be reset after upgrading at optical module the parameter stored in complete parameter register; After renewal Flag Reset, optical module, again according to the parameter after the renewal stored in parameter register, upgrades the backup parameter stored in backup parameter register.The set of the renewal mark of parameter and reset are the two states upgrading mark, in order to indicate different situations; The set of the renewal mark of parameter indicates the process that this parameter is in renewal, each byte namely just in undated parameter register; The reset of the renewal mark of parameter, then indicate this parameter and upgraded complete, and each byte namely in parameter register has all upgraded complete.
For multibyte parameter and backup parameter thereof, be stored in multibyte parameter register and backup parameter register respectively; Like this, when main frame reads parameter, be masked as set if upgrade, then can determine each byte of the parameter register upgrading this parameter one by one, prevent from being interrupted when the byte of undated parameter register one by one, occur the phenomenon of read error.
Based on above-mentioned optical module parameter update method, the optical module parameter transmission method idiographic flow that the embodiment of the present invention provides as shown in Figure 2, comprises the steps:
S201: main frame sends the instruction of reading parameter to optical module.
Particularly, main frame can send the instruction of reading parameter by iic bus to optical module.
S202: after optical module receives the instruction of the reading parameter that main frame sends, confirms the renewal mark of the parameter be read.
Particularly, optical module according to IIC(Inter-Integrated Circuit, mutual integrated circuit) after bus protocol parses the instruction of reading parameter from the signal that main frame sends, need the renewal mark of parameter read to confirm to main frame; Namely, after optical module confirms the instruction of the reading parameter receiving main frame transmission, the renewal mark of the parameter be read in this optical module is confirmed, determines that the renewal mark of this parameter is set or reset.
S203: according to the confirmation result to renewal mark, the backup parameter of this parameter or this parameter returns to main frame by optical module.
Particularly, if optical module confirms that the renewal mark of the parameter be read is set, then the backup parameter of this parameter stored in backup parameter register is sent to main frame;
Otherwise optical module confirms that the renewal mark of the parameter be read is reset, and this parameter stored is sent to main frame in parameter register.
Like this, when upgrading mark and being set, namely when the parameter of optical module just in undated parameter register, optical module reads backup parameter and sends to main frame from backup parameter register, avoid the renewal interrupting parameter when each byte of undated parameter register, thus avoid in parameter renewal process and make mistakes, it also avoid the parameter that main frame reads mistake.
And when upgrading mark and being reset, show that the parameter in parameter register has upgraded complete, so main frame safely, reliably can read the parameter in parameter register.
Based on second reason of the above-mentioned main frame read error parameter value mentioned, optical module in above-mentioned steps S203 confirms that the renewal mark of the parameter be read is reset, by a kind of concrete grammar that this parameter stored in parameter register sends to main frame, flow process can be as shown in Figure 3, to prevent main frame from reading in parametric procedure the renewal occurred this parameter, the reading process interrupting this parameter and cause the phenomenon of main frame read error parameter, the method specifically comprises the steps:
S301: after optical module confirms that the renewal mark of the parameter be read is reset, when main frame reads the high byte of parameter, by this parameter read-in of storing in parameter register to buffer area, and the high byte of the parameter stored in parameter register is sent to described main frame.
Particularly, main frame, when reading multibyte parameter, often reads from high byte; Especially, when main frame reads multibyte parameter by serial i IC bus, main frame, from high byte, reads the numerical value in each byte of parameter successively.Due to universal serial bus carry out byte send time, be a bit bit send, therefore, main frame reads time of a byte can be long, namely optical module send time of a byte to main frame can be long; When main frame reads the high byte numerical value of parameter, namely optical module sends to main frame in the process of the high byte of parameter, and optical module likely needs the parameter to storing in parameter register to upgrade.
For avoiding when main frame reads the high byte numerical value of parameter, optical module upgrades the parameter stored in parameter register, and the low byte of the parameter causing main frame to read is the numerical value after upgrading, thus causes parameter read error; Therefore, the optical module that the embodiment of the present invention provides before the high byte of the parameter will stored in described parameter register sends to described main frame, first by the parameter read-in that stores in described parameter register in buffer area.
S302: when main frame reads the low byte of described parameter, sends the low byte of the parameter stored in described buffer area to described main frame.
Have read the high byte of parameter at main frame after, if main frame continues the low byte reading described parameter, then the low byte of the parameter stored in buffer area can be returned to main frame; Like this, even if when main frame reads the high byte numerical value of parameter, optical module upgrades the parameter stored in parameter register, and the low byte of the parameter in the buffer area that main frame returns is still the numerical value before renewal, avoids parameter read error.
Similarly, after optical module in above-mentioned steps S203 confirms that the renewal mark of the parameter be read is set, by a kind of concrete grammar that the backup parameter of this parameter stored in backup parameter register sends to main frame, flow process can as shown in Figure 4, comprise the steps:
S401: after optical module confirms that the renewal mark of the parameter be read is set, when main frame reads the high byte of parameter, to the backup parameter read-in of this parameter stored in parameter register be backed up to buffer area, and the high byte of the parameter stored in backup parameter register is sent to described main frame.
S402: when main frame reads the low byte of described parameter, sends the low byte of the parameter stored in described buffer area to described main frame.
The optical module parameter transmitting device that what the embodiment of the present invention provided be arranged in optical module, as shown in Figure 5, comprising: parameter sending module 501, parameter update module 502.
Parameter sending module 501 is for after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, then the backup parameter of this parameter stored in backup parameter register sent to described main frame; Otherwise, this parameter stored in parameter register is sent to described main frame;
Parameter update module 502 for before upgrading in described parameter register the parameter stored by described renewal flag set, by described renewal Flag Reset after upgrading the parameter stored in described parameter register.Parameter update module 502 after by described renewal Flag Reset, according to the parameter after the renewal stored in described parameter register, upgrades the backup parameter stored in described backup parameter register.
Wherein, parameter sending module 501 comprises: upgrade mark confirmation unit 511, first transmitting element 512 and the second transmitting element 513;
Upgrade mark confirmation unit 511 for after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, and sends the first notice to the first transmitting element 512; Otherwise, send the second notice to the second transmitting element 513;
The backup parameter of this parameter stored in described backup parameter register, for after receiving the first notice, sends to described main frame by the first transmitting element 512;
This parameter stored in described parameter register, for after receiving the second notice, sends to described main frame by the second transmitting element 513.
Following subelement can be comprised: high byte sends subelement, parameter buffer memory subelement, low byte transmission subelement in the first transmitting element 512.
High byte in first transmitting element 512 sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the backup parameter stored in described backup parameter register is sent to described main frame;
Parameter buffer memory subelement in first transmitting element 512, for when described main frame reads the high byte of described parameter, by the backup parameter read-in that stores in described backup parameter register in buffer area;
Low byte in first transmitting element 512 sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the backup parameter stored in described buffer area to described main frame.
Analogously, following subelement can be comprised in the second transmitting element 513: high byte sends subelement, parameter buffer memory subelement, low byte transmission subelement.
High byte in second transmitting element 513 sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the parameter stored in described parameter register is sent to described main frame;
Parameter buffer memory subelement in second transmitting element 513, for when described main frame reads the high byte of described parameter, by the parameter read-in that stores in described parameter register in buffer area;
Low byte in second transmitting element 513 sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the parameter stored in described buffer area to described main frame.
Described device is arranged in optical module for optical network unit, and described main frame is specially optical network unit system equipment; Or
Above-mentioned optical module parameter transmitting device specifically can be arranged in ONU optical module, and above-mentioned main frame is specially ONU system equipment;
Or above-mentioned optical module parameter transmitting device specifically can be arranged in OLT optical module, the concrete OLT system equipment of above-mentioned main frame.
Above-mentioned optical module can be specifically bias current parameter or utilizing emitted light power parameter or received optical power parameter or the parameter such as temperature parameter or supply voltage parameter to the parameter of Host Transfer.
In the optical module that the embodiment of the present invention provides, due to when upgrading the parameter gathered, renewal mark is carried out set, according to the renewal mark of set, can prevent main frame from from the new argument register upgraded, reading parameter mistakenly, simultaneously due to the backup parameter stored in backup parameter register is sent to main frame, can ensure that main frame reads correct parameter, improve the accuracy that main frame reads optical module parameter, improve parameter is transferred to main frame reliability from optical module.
Further, optical module is in the process sending multibyte parameter or backup parameter to main frame, in order to prevent that parameter or backup parameter more new events occur in transmission data procedures, and cause the data sending mistake, optical module, when sending high byte data to main frame, is namely deposited into buffer area the low byte data of parameter or backup parameter; Afterwards, by the low byte in buffer area to Host Transfer; Like this, even if optical module upgrades parameter or backup parameter, the low byte of parameter or backup parameter is caused to there occurs change, also optical module can not be hindered the low byte data in buffer area, ensure that main frame reads the accuracy of optical module parameter, improve parameter is transferred to main frame reliability from optical module.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. an optical module parameter transmission method, comprising:
After the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, then:
When described main frame reads the high byte of described parameter, before the high byte of backup parameter that will store in backup parameter register sends to described main frame, first by the backup parameter read-in that stores in described backup parameter register in buffer area;
When described main frame reads the low byte of described parameter, the low byte of the backup parameter stored in described buffer area is sent to described main frame;
Otherwise:
When described main frame reads the high byte of described parameter, before the high byte of the parameter will stored in described parameter register sends to described main frame, first by the parameter read-in that stores in described parameter register in buffer area;
When described main frame reads the low byte of described parameter, the low byte of the parameter stored in described buffer area is sent to described main frame;
Wherein, described parameter register and backup parameter register are multibyte, and the described mark that upgrades was set before upgrading the parameter stored in described parameter register, and the parameter stored in described parameter register is reset after upgrading.
2. the method for claim 1, is characterized in that, after described renewal mark is reset, also comprises:
According to the parameter after the renewal stored in described parameter register, upgrade the backup parameter stored in described backup parameter register.
3. an optical module parameter transmitting device, comprising:
Parameter sending module, it comprises renewal mark confirmation unit, the first transmitting element and the second transmitting element, wherein,
The described mark confirmation unit that upgrades is used for after the instruction receiving the reading parameter that main frame sends, if confirm, the renewal mark of the parameter be read is set, and sends the first notice to the first transmitting element; Otherwise, send the second notice to the second transmitting element;
First transmitting element is used for after receiving the first notice, and the backup parameter of this parameter stored in backup parameter register sent to described main frame, the first transmitting element comprises:
High byte sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the backup parameter stored in described backup parameter register is sent to described main frame;
Parameter buffer memory subelement, for when described main frame reads the high byte of described parameter, by the backup parameter read-in that stores in described backup parameter register in buffer area;
Low byte sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the backup parameter stored in described buffer area to described main frame;
Second transmitting element is used for after receiving the second notice, and this parameter stored in parameter register sent to described main frame, the second transmitting element comprises:
High byte sends subelement, for when described main frame reads the high byte of described parameter, the high byte of the parameter stored in described parameter register is sent to described main frame;
Parameter buffer memory subelement, for when described main frame reads the high byte of described parameter, by the parameter read-in that stores in described parameter register in buffer area;
Low byte sends subelement, for when described main frame reads the low byte of described parameter, is sent by the low byte of the parameter stored in described buffer area to described main frame;
Parameter update module, for before upgrading in described parameter register the parameter stored by described renewal flag set, by described renewal Flag Reset after upgrading the parameter stored in described parameter register.
4. device as claimed in claim 3, is characterized in that,
Parameter update module, also for by after described renewal Flag Reset, according to the parameter after the renewal stored in described parameter register, upgrades the backup parameter stored in described backup parameter register.
5. the device as described in claim 3 or 4, is characterized in that, described device is arranged in optical module for optical network unit, and described main frame is specially optical network unit system equipment; Or
Described device is arranged in optical line terminal optical module, and described main frame is OLT system equipment; And
Described parameter is specially bias current parameter or utilizing emitted light power parameter or received optical power parameter.
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| CN103441992B (en) * | 2013-08-14 | 2017-02-15 | 青岛海信宽带多媒体技术有限公司 | Method for guaranteeing optical module protocol data integrity |
| CN103401879B (en) * | 2013-08-14 | 2017-08-25 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module and the method for ensureing optical module protocol data integrity |
| CN104579548B (en) * | 2013-10-29 | 2019-09-10 | 南京中兴新软件有限责任公司 | Transmission method and device based on management data input and output multi-source agreement |
| CN104579462A (en) * | 2014-12-22 | 2015-04-29 | 武汉电信器件有限公司 | Optical module-based I2C double-byte reporting method |
| EP3805911A4 (en) | 2018-07-16 | 2021-06-30 | Huawei Technologies Co., Ltd. | Method, device and system for acquiring link negotiation information of optical module |
| CN111541957A (en) * | 2020-04-21 | 2020-08-14 | 武汉英飞光创科技有限公司 | Method for modifying default value of signal integrity register and optical module |
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