CN109547877A - A kind of optical communication path negater circuit and its application method - Google Patents
A kind of optical communication path negater circuit and its application method Download PDFInfo
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- CN109547877A CN109547877A CN201910087987.8A CN201910087987A CN109547877A CN 109547877 A CN109547877 A CN 109547877A CN 201910087987 A CN201910087987 A CN 201910087987A CN 109547877 A CN109547877 A CN 109547877A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
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Abstract
The invention discloses a kind of optical communication path negater circuit and its application methods, are related to technical field of photo communication, which includes: MAC processing unit comprising: MAC chip, MAC chip include main PON interface；First PON optical module, the first PON optical module include the first PON；2nd PON optical module, the 2nd PON optical module include the 2nd PON；Module is switched, module is switched for responding the customized selection signal of MAC processing unit transmission, correspondingly establishes communication channel between main PON interface and the first PON or the 2nd PON.The present invention can realize that MAC chip switches between different PON interfaces under the premise of saving hardware cost, while conveniently carrying out access switching, can guarantee being normally carried out for communication work.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to a kind of optical communication path negater circuit and method.
Background technique
With the extensive use of PON network, how in PON network to guarantee that the business of corporate client or mobile subscriber can
Become operator's question of common concern by property；
Common optical path protection mechanism at this stage needs staff's hand fit's equipment, to PON mouthfuls of ONU, trunk light
Fine, optical splitter and Distribution fibers carry out redundancy protecting, to work as a certain component malfunction, can be switched in addition light all the way
Fibre may be implemented on service switchback to former faulty link after the fault recovery of former faulty link；
But optical path protection mechanism at this stage, has that operational sequence is cumbersome more, the low problem of working efficiency；
Therefore, it is badly in need of a kind of working efficiency of new optical communication path negater circuit raising CS channel switching.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of optical communication path negater circuit and
Method can realize that MAC chip switches between different PON interfaces under the premise of saving hardware cost, convenient fast
While the carry out access switching of victory, it can guarantee being normally carried out for communication work.
To achieve the above objectives, the technical solution adopted by the present invention is that:
In a first aspect, the present invention provides a kind of optical communication path negater circuit, the circuit includes:
MAC processing unit comprising: MAC chip, the MAC chip include main PON interface；
First PON optical module, the first PON optical module include the first PON；
2nd PON optical module, the 2nd PON optical module include the 2nd PON；
Module is switched, the conversion module is used to respond the customized selection signal that the MAC processing unit is sent, accordingly
Communication channel is established between the main PON interface and 2nd PON of the first PON or described in ground.
Based on the above technical solution, the customized selection signal includes the first PON selection signal and second
PON selection signal；
The module of switching responds the first PON selection signal, between the main PON interface and the first PON
Establish communication channel；
The module of switching responds the 2nd PON selection signal, between the main PON interface and the 2nd PON
Establish communication channel.
Based on the above technical solution, the MAC processing unit further includes reversed chip,
The reversed chip is connect with the MAC chip and the module by signal of switching respectively；
The reversed chip is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON
Selection signal.
Based on the above technical solution, when the first PON selection signal is high level signal, the reversed core
Piece carries out reverse process, obtains the 2nd PON selection signal, and the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, the reversed chip carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
It is described to switch module response high level signal, according to high level signal, in the main PON interface and described first
Communication channel is established between 2nd PON of PON or described.
Based on the above technical solution, when the first PON selection signal is high level signal, the reversed core
Piece carries out reverse process, obtains the 2nd PON selection signal, and the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, the reversed chip carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
The module of switching can also respond low level signal, according to low level signal, the main PON interface with it is described
Communication channel is established between first PON or described, 2nd PON.
Second aspect, the present invention provide another optical communication path negater circuit, and the circuit includes:
MAC processing unit comprising: MAC chip, the MAC chip include main PON interface；
First PON optical module, the first PON optical module include the first PON；
2nd PON optical module, the 2nd PON optical module include the 2nd PON；
Module is switched, is used to connect with the main PON interface, the first PON and the 2nd PON signal, institute
The first PON selection signal or the 2nd PON selection signal that conversion module is sent for receiving MAC processing unit are stated,
According to the first PON selection signal, communication channel is established between the main PON interface and the first PON, according to described
2nd PON selection signal establishes communication channel between the main PON interface and the 2nd PON.
The third aspect, the present invention also provides a kind of application method of optical communication path negater circuit, this method is based on first
The optical communication path negater circuit that aspect provides comprising following steps:
The MAC processing unit sends customized selection signal to the module of switching by the main PON interface；
The module of switching receives the customized selection signal, according to the customized selection signal, in the main PON
Communication channel is established between interface and 2nd PON of the first PON or described.
Based on the above technical solution, the customized selection signal includes the first PON selection signal and second
PON selection signal；
The module of switching responds the first PON selection signal, between the main PON interface and the first PON
Establish communication channel；
The module of switching responds the 2nd PON selection signal, between the main PON interface and the 2nd PON
Establish communication channel.
Based on the above technical solution, the MAC processing unit further includes reversed chip,
The reversed chip is connect with the MAC chip and the module by signal of switching respectively；
The reversed chip is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON
Selection signal.
Based on the above technical solution, when the first PON selection signal is high level signal, the reversed core
Piece carries out reverse process, obtains the 2nd PON selection signal, and the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, the reversed chip carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
It is described to switch module response high level signal, according to high level signal, in the main PON interface and described first
Communication channel is established between 2nd PON of PON or described；
Or the module of switching responds low level signal, according to low level signal, in the main PON interface and described first
Communication channel is established between PON or described second.
Compared with the prior art, the advantages of the present invention are as follows:
The present invention can realize that MAC chip is cut between different PON interfaces under the premise of saving hardware cost
It changes, while conveniently carrying out access switching, can guarantee being normally carried out for communication work.
Detailed description of the invention
Fig. 1 is the structural block diagram of the first optical communication path negater circuit provided in an embodiment of the present invention；
Fig. 2 is the partial circuit schematic diagram of the first optical communication path negater circuit provided in an embodiment of the present invention；
Fig. 3 is the structural block diagram of second of optical communication path negater circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of step flow chart of the application method of optical communication path negater circuit provided in an embodiment of the present invention；
In figure: 1, MAC processing unit；10, MAC chip；100, main PON interface；11, reversed chip；2, the first PON optical mode
Block；20, the first PON；3, the 2nd PON optical module；30, the 2nd PON；4, module is switched；5, monitoring unit.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
To reach above-mentioned technical effect, the general thought of the application is as follows:
A kind of optical communication path negater circuit, circuit include:
MAC processing unit 1 comprising: MAC chip 10, MAC chip 10 include main PON interface 100；
First PON optical module 2, the first PON optical module 2 include the first PON20；
2nd PON optical module 3, the 2nd PON optical module 3 include the 2nd PON30；
Module 4 is switched, conversion module 4 is used to respond the customized selection signal of the transmission of MAC processing unit 1, correspondingly exists
Communication channel is established between main PON interface 100 and the first PON20 or the 2nd PON30.
The embodiment of the present invention provides a kind of optical communication path negater circuit and method, can be in the premise for saving hardware cost
Under, realize that MAC chip switches between different PON interfaces, while conveniently carrying out access switching, Neng Goubao
Card communication work is normally carried out.
Ginseng as shown in FIGS. 1 and 2, circuit embodiments of the invention provide a kind of optical communication path negater circuit, and circuit includes:
MAC processing unit 1 comprising: MAC chip 10, MAC chip 10 include main PON interface 100；
First PON optical module 2, the first PON optical module 2 include the first PON20；
2nd PON optical module 3, the 2nd PON optical module 3 include the 2nd PON30；
Module 4 is switched, conversion module 4 is used to respond the customized selection signal of the transmission of MAC processing unit 1, correspondingly exists
Communication channel is established between main PON interface 100 and the first PON20 or the 2nd PON30.
In the embodiment of the present invention, MAC processing unit 1 is used to send customized selection signal, conversion module to conversion module 4
4 respond the customized selection signal of the transmission of MAC processing unit 1, correspondingly in main PON interface 100 and the first PON20 or second
Communication channel is established between PON30；
When the instruction of customized selection signal is meant that main PON interface 100 is communicated with the first PON20, then in main PON interface
100 and the first establish communication channel between PON20；
When the instruction of customized selection signal is meant that main PON interface 100 is communicated with the 2nd PON30, then in main PON interface
100 and the 2nd establish communication channel between PON30；
And then the MAC chip 10 of MAC processing unit 1 is sent out by main PON interface 100 to the first PON20 or the 2nd PON30 again
Send the information for specifically needing to transmit；
The embodiment of the present invention realizes double PON interfaces using single PON MAC chip, can be in the premise for saving hardware cost
Under, realize that MAC chip switches between different PON interfaces, while conveniently carrying out access switching, Neng Goubao
Card communication work is normally carried out.
It should be noted that communication channel foundation after, the communication channel be not only it is unidirectional, but two-way, i.e.,
Not only the MAC chip 10 of MAC processing unit 1 can send the letter for specifically needing to transmit to the first PON20 or the 2nd PON30
Breath, the first PON20 or the 2nd PON30 also can feed back the information for specifically needing to transmit to the MAC chip 10 of MAC processing unit 1；
As shown in Fig. 1 of Figure of description, the information for needing to transmit is marked by SERDES.
When necessary, the embodiment of the present invention can also be applied in GPON, EPON, XGSPON and 10GEPON scene,
For example, main PON interface 100 is specifically main GPON interface in GPON application scenarios；First PON optical module 2 is specific
For the first GPON optical module, the first PON20 is specially the first GPON；2nd PON optical module 3 is specially the 2nd GPON optical module,
2nd PON30 is specially the 2nd GPON；
And in EPON scene, main PON interface 100 is specifically main EPON interface；First PON optical module 2 is specially first
EPON optical module, the first PON20 are specially the first EPON；2nd PON optical module 3 specially the 2nd EPON optical module, second
PON30 is specially the 2nd EPON；
In addition, the online mode of other PON, such as XGSPON and 10GEPON, it is similar with GPON and EPON situation.
Another specific embodiment of the embodiment of the present invention, customized selection signal include the first PON selection signal with
And the 2nd PON selection signal；
It switches module 4 and responds the first PON selection signal, establish to communicate between main PON interface 100 and the first PON20 and lead to
Road；
It switches module 4 and responds the 2nd PON selection signal, establish to communicate between main PON interface 100 and the 2nd PON30 and lead to
Road.
Another specific embodiment of the embodiment of the present invention, MAC processing unit 1 further include reversed chip 11,
Reversed chip 11 respectively with MAC chip 10 and switch 4 signal of module and connect；
Reversed chip 11 is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON selection signal.
Another specific embodiment of the embodiment of the present invention, when the first PON selection signal is high level signal, reversely
Chip 11 carries out reverse process, obtains the 2nd PON selection signal, and the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, reversed chip 11 carries out reverse process, obtains the 2nd PON choosing
Signal is selected, the 2nd PON selection signal is high level signal；
It switches module 4 and responds high level signal, according to high level signal, in main PON interface 100 and the first PON20 or the
Communication channel is established between two PON30；
Specifically, Op_ctrl and Op_ctrl_N respectively represent the first PON selection as shown in Fig. 2 of Figure of description
Signal and the 2nd PON selection signal；
1A, 1B, 2A, 2B, 1Y and 2Y are the interface for switching module 4.
It should be noted that switch module 4 may be arranged as response low level signal, at this time then with above-mentioned specific implementation
Mode on the contrary,
When the first PON selection signal is high level signal, reversed chip 11 carries out reverse process, obtains the 2nd PON choosing
Signal is selected, the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, reversed chip 11 carries out reverse process, obtains the 2nd PON choosing
Signal is selected, the 2nd PON selection signal is high level signal；
Low level signal can also be responded by switching module 4, according to low level signal, in main PON interface 100 and first
Communication channel is established between PON20 or the 2nd PON30；
Compared with above-mentioned specific embodiment, difference is only that the response setting for switching module 4 is different, and one is in response to height
Level signal, one is in response to low level signal.
Another specific embodiment of the embodiment of the present invention, MAC chip 10 are BCM68380 chip；
Certainly, it is not limited solely to BCM68380 chip, according to actual needs, Hisilicon5115 series also can be selected
7562 family chip of chip, 5116 family chip of Hisilicon or MTK.
Another specific embodiment of the embodiment of the present invention can also add monitoring New Year's Day 5, thus right, MAC when necessary
The working condition of chip 10 and reversed chip 11 is monitored；
Specifically for monitoring the selection of MAC processing unit 1, the first PON20 or the 2nd PON30 has been selected；
The light-receiving detection signal of the first PON optical module 2 and the 2nd PON optical module 3 can also be monitored, thus check and
Whether the OLT of opposite end has connection, and whether ONU registers；
Furthermore it is also possible to obtain the letter such as temperature, optical power, producer of the first PON optical module 2 and the 2nd PON optical module 3
Breath, monitors the operating condition of optical module.
Based on the same inventive concept, circuit embodiments of the invention provide another optical communication path negater circuit
Embodiment, specific as follows:
As shown in figure 3, a kind of optical communication path negater circuit, circuit include:
MAC processing unit 1 comprising: MAC chip 10, MAC chip 10 include main PON interface 100；
First PON optical module 2, the first PON optical module 2 include the first PON20；
2nd PON optical module 3, the 2nd PON optical module 3 include the 2nd PON30；
Module 4 is switched, is used to connect with main PON interface 100, the first PON20 and the 2nd PON30 signal, modulus of conversion
Block 4 is used to receive the first PON selection signal or the 2nd PON selection signal of the transmission of MAC processing unit 1, is selected according to the first PON
Signal establishes communication channel between main PON interface 100 and the first PON20, according to the 2nd PON selection signal, connects in main PON
Communication channel is established between mouth 100 and the 2nd PON30.
In the embodiment of the present invention, MAC processing unit 1 is used to send the first PON selection signal or second to conversion module 4
PON selection signal, conversion module 4 then responds the customized selection signal of the transmission of MAC processing unit 1, correspondingly in main PON interface
100 and the first establish communication channel between PON20 or the 2nd PON30；
The instruction of first PON selection signal is meant that main PON interface 100 is communicated with the first PON20, in main PON interface 100
Communication channel is established between the first PON20；
The instruction of 2nd PON selection signal is meant that main PON interface 100 is communicated with the 2nd PON30, in main PON interface 100
Communication channel is established between the 2nd PON30；
And then the MAC chip 10 of MAC processing unit 1 is sent out by main PON interface 100 to the first PON20 or the 2nd PON30 again
Send the information for specifically needing to transmit；
The embodiment of the present invention realizes double PON interfaces using single PON MAC chip, can be in the premise for saving hardware cost
Under, realize that MAC chip switches between different PON interfaces, while conveniently carrying out access switching, Neng Goubao
Card communication work is normally carried out.
Based on the same inventive concept, this application provides the corresponding optical communication path negater circuits of first circuit embodiments
Application method embodiment of the method, see below:
As shown in figure 4, embodiment of the present invention method provides a kind of optical communication path negater circuit method, this method is based on
The optical communication path negater circuit that first aspect provides comprising following steps:
S1, MAC processing unit 1 sends customized selection signal to module 4 is switched by main PON interface 100；
S2, it switches module 4 and receives customized selection signal, according to customized selection signal, in main PON interface 100 and
Communication channel is established between one PON20 or the 2nd PON30.
In the embodiment of the present invention, MAC processing unit 1 is used to send customized selection signal, conversion module to conversion module 4
4 respond the customized selection signal of the transmission of MAC processing unit 1, correspondingly in main PON interface 100 and the first PON20 or second
Communication channel is established between PON30；
When the instruction of customized selection signal is meant that main PON interface 100 is communicated with the first PON20, then in main PON interface
100 and the first establish communication channel between PON20；
When the instruction of customized selection signal is meant that main PON interface 100 is communicated with the 2nd PON30, then in main PON interface
100 and the 2nd establish communication channel between PON30；
And then the MAC chip 10 of MAC processing unit 1 is sent out by main PON interface 100 to the first PON20 or the 2nd PON30 again
Send the information for specifically needing to transmit；
The embodiment of the present invention realizes double PON interfaces using single PON MAC chip, can be in the premise for saving hardware cost
Under, realize that MAC chip switches between different PON interfaces, while conveniently carrying out access switching, Neng Goubao
Card communication work is normally carried out.
It should be noted that communication channel foundation after, the communication channel be not only it is unidirectional, but two-way, i.e.,
Not only the MAC chip 10 of MAC processing unit 1 can send the letter for specifically needing to transmit to the first PON20 or the 2nd PON30
Breath, the first PON20 or the 2nd PON30 also can feed back the information for specifically needing to transmit to the MAC chip 10 of MAC processing unit 1.
Another specific embodiment of the embodiment of the present invention, customized selection signal include the first PON selection signal with
And the 2nd PON selection signal；
It switches module 4 and responds the first PON selection signal, establish to communicate between main PON interface 100 and the first PON20 and lead to
Road；
It switches module 4 and responds the 2nd PON selection signal, establish to communicate between main PON interface 100 and the 2nd PON30 and lead to
Road.
Another specific embodiment of the embodiment of the present invention, MAC processing unit 1 further include reversed chip 11,
Reversed chip 11 respectively with MAC chip 10 and switch 4 signal of module and connect；
Reversed chip 11 is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON selection signal.
It should be noted that the preferred alternative multiplex/demultiplex chip of reversed chip 11, specifically can be AD8159 model
Chip, to be able to achieve being switched fast for double PON interfaces.
Another specific embodiment of the embodiment of the present invention, when the first PON selection signal is high level signal, reversely
Chip 11 carries out reverse process, obtains the 2nd PON selection signal, and the 2nd PON selection signal is low level signal；
When the first PON selection signal is low level signal, reversed chip 11 carries out reverse process, obtains the 2nd PON choosing
Signal is selected, the 2nd PON selection signal is high level signal；
It switches module 4 and responds high level signal, according to high level signal, in main PON interface 100 and the first PON20 or the
Communication channel is established between two PON30.
Another specific embodiment of the embodiment of the present invention, ibid an embodiment is similar, switches module 4 and responds low level
Signal establishes communication channel between main PON interface 100 and the first PON20 or the 2nd PON30 according to low level signal.
Another specific embodiment of the embodiment of the present invention, MAC chip 10 are BCM68380 chip；
Certainly, it is not limited solely to BCM68380 chip, according to actual needs, Hisilicon5115 series also can be selected
7562 family chip of chip, 5116 family chip of Hisilicon or MTK.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of optical communication path negater circuit, which is characterized in that the circuit includes:
MAC processing unit (1) comprising: MAC chip (10), the MAC chip (10) they include main PON interface (100)；
First PON optical module (2), the first PON optical module (2) include the first PON (20)；
2nd PON optical module (3), the 2nd PON optical module (3) include the 2nd PON (30)；
It switches module (4), described switch module (4) are for responding the customized selection letter that the MAC processing unit (1) sends
Number, correspondingly communicate in the main PON interface (100) with being established between the first PON (20) or the 2nd PON (30)
Road.
2. circuit as described in claim 1, it is characterised in that:
The customized selection signal includes the first PON selection signal and the 2nd PON selection signal；
Described switch module (4) respond the first PON selection signal, in the main PON interface (100) and the first PON
(20) communication channel is established between；
Described switch module (4) respond the 2nd PON selection signal, in the main PON interface (100) and the 2nd PON
(30) communication channel is established between.
3. circuit as claimed in claim 2, it is characterised in that:
The MAC processing unit (1) further includes reversed chip (11),
The reversed chip (11) connect with the MAC chip (10) and described module (4) signal of switching respectively；
The reversed chip (11) is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON
Selection signal.
4. circuit as claimed in claim 2, it is characterised in that:
When the first PON selection signal is high level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are low level signal；
When the first PON selection signal is low level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
It is described to switch module (4) response high level signal, according to high level signal, in the main PON interface (100) and described the
Communication channel is established between one PON (20) or the 2nd PON (30).
5. circuit as described in claim 1, it is characterised in that:
When the first PON selection signal is high level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are low level signal；
When the first PON selection signal is low level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
It is described to switch module (4) response low level signal, according to low level signal, in the main PON interface (100) and described the
Communication channel is established between one PON (20) or the 2nd PON (30).
6. a kind of optical communication path negater circuit, which is characterized in that the circuit includes:
MAC processing unit (1) comprising: MAC chip (10), the MAC chip (10) they include main PON interface (100)；
First PON optical module (2), the first PON optical module (2) include the first PON (20)；
2nd PON optical module (3), the 2nd PON optical module (3) include the 2nd PON (30)；
Module (4) are switched, are used for and the main PON interface (100), the first PON (20) and the 2nd PON (30)
Signal connection, the conversion module (4) are used to receive the first PON selection signal or described of MAC processing unit (1) transmission
2nd PON selection signal, according to the first PON selection signal, in the main PON interface (100) and the first PON (20)
Between establish communication channel, according to the 2nd PON selection signal, in the main PON interface (100) and the 2nd PON
(30) communication channel is established between.
7. a kind of application method based on optical communication path negater circuit described in claim 1 is it is characterized in that, the method
The following steps are included:
The MAC processing unit (1) switches module (4) by main PON interface (100) Xiang Suoshu and sends customized selection letter
Number；
Described switch module (4) receive the customized selection signal, according to the customized selection signal, in the main PON
Communication channel is established between interface (100) and the first PON (20) or the 2nd PON (30).
8. the method for claim 7, it is characterised in that:
The customized selection signal includes the first PON selection signal and the 2nd PON selection signal；
Described switch module (4) respond the first PON selection signal, in the main PON interface (100) and the first PON
(20) communication channel is established between；
Described switch module (4) respond the 2nd PON selection signal, in the main PON interface (100) and the 2nd PON
(30) communication channel is established between.
9. method according to claim 8, it is characterised in that:
The MAC processing unit (1) further includes reversed chip (11),
The reversed chip (11) connect with the MAC chip (10) and described module (4) signal of switching respectively；
The reversed chip (11) is used to carry out reverse process according to the first PON selection signal, obtain the 2nd PON
Selection signal.
10. method as claimed in claim 9, it is characterised in that:
When the first PON selection signal is high level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are low level signal；
When the first PON selection signal is low level signal, the reversed chip (11) carries out reverse process, described in acquisition
2nd PON selection signal, the 2nd PON selection signal are high level signal；
It is described to switch module (4) response high level signal, according to high level signal, in the main PON interface (100) and described the
Communication channel is established between one PON (20) or the 2nd PON (30)；
Or it is described switch module (4) response low level signal, according to low level signal, the main PON interface (100) with it is described
Communication channel is established between first PON (20) or the 2nd PON (30).
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| CN201910087987.8A CN109547877B (en) | 2019-01-29 | 2019-01-29 | Optical communication channel switching circuit and use method thereof |
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| CN201910087987.8A CN109547877B (en) | 2019-01-29 | 2019-01-29 | Optical communication channel switching circuit and use method thereof |
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| CN109547877B CN109547877B (en) | 2022-03-01 |
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