CN102821329A - Compatible device of CFP (CENTUM Form-factor Pluggable) optical modules and method - Google Patents

Compatible device of CFP (CENTUM Form-factor Pluggable) optical modules and method Download PDF

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CN102821329A
CN102821329A CN2012102868274A CN201210286827A CN102821329A CN 102821329 A CN102821329 A CN 102821329A CN 2012102868274 A CN2012102868274 A CN 2012102868274A CN 201210286827 A CN201210286827 A CN 201210286827A CN 102821329 A CN102821329 A CN 102821329A
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optical module
transmission
channel
cfp
multiplexing
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CN102821329B (en
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谢水新
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Ruijie Networks Co Ltd
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Fujian Star Net Communication Co Ltd
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Abstract

The invention discloses a compatible device of CFP (CENTUM Form-factor Pluggable) optical modules and a method. The method comprises the following steps of: controlling the enabling state of a multiplexing unit by a control unit in the device according to the type of the current CFP optical module, and controlling communication of a transmission channel corresponding to the type of the current CFP optical module in the multiplexing unit according to the corresponding relation among the type of the current CFP optical module, the type of a preset CFP optical module and the transmission channel in the multiplexing unit. The compatible device disclosed by the invention has the advantages that the signal transmission of 1*40G, 2*40G, 3*40G, or 100G CFP optical modules connected with the compatible device is realized, so that the problem of incompatibility among the 2*40G, 3*40G and 100G CFP optical modules in the prior art is solved.

Description

CFP optical module compatible apparatus and method
Technical field
The present invention relates to optical communication field, particularly, relate to a kind of CFP optical module compatible apparatus and method.
Background technology
IEEE 802.3ba standard: the 40/100G ethernet standard, in formal issue on June 17th, 2010, this standard has promoted the fast development of 40G/100G network, the 40G/100G large-scale commercial applications is disposed becomes possibility.802.3ba the defeated mode of the light oral instructions of definition is the main flow transmission means of 40G/100G network.CFP (CENTUM Form-factor Pluggable) is by Avago; FINisar; Opnext, multi-source service agreement (MSA, the Multi-Source Agreement) technical specification that Sumitomos four families initiate; Its aim is to define one to support hot-swappable optical transceiver, applies to the 40G/100G field.Along with the appearance of IEEE 802.3ba standard and CFP-MSA standard, each optical module manufacturer constantly releases 40G and 100G CFP optical module, and according to the CFP-MSA standard, has defined 1x40G, 2x40G, 3x40G, these 4 kinds of CFP optical modules of 100G respectively.
1x40G, 2x40G, 3x40G, these 4 kinds of CFP optical modules of 100G all are 148 pins, and wherein Top face and Bottom have respectively defined 74 pins, specifically see Fig. 1 a and Fig. 1 b, and the definition of pin can be consulted the definition in the relevant criterion.
The pin definitions of the 1x40G through listing among comparison diagram 1a and Fig. 1 b, 2x40G, 3x40G, these 4 kinds of optical modules of 100G, can learn:
1) 1x40G is the same with the pin definitions of 2x40G CFP optical module, no matter be end face (Top face) or bottom surface (Bottom face);
2) pin definitions of the Bottom face of 1x40G, 2x40G, 3x40G, these 4 kinds of CFP optical modules of 100G is the same, and the pin definitions of Top face is had any different, and Fig. 2 a and Fig. 2 b are seen in concrete difference;
3) in the pin definitions of the Top face of 1x40G, 2x40G, 3x40G, these 4 kinds of CFP optical modules of 100G, all ground connection (GND) pin definitions is all on identical pin.
Can know that according to above-mentioned contrast 1x40G is according to the definition of CFP-MSA standard, under the situation of not doing any compatible design, it is directly compatible respectively and to be positioned at 2x40G, 3x40G, these 3 kinds of optical modules of 100G of transmitting the opposite end; And 2x40G, 3x40G, these 3 kinds of optical modules of 100G are different in the pin definitions of Top face, can't be compatible between these 3 kinds of CFP optical modules of 2x40G, 3x40G and 100G at transmission channel two ends thereby cause laying respectively at.
It is thus clear that, exist in the prior art can't be compatible between these 3 kinds of CFP optical modules of 2x40G, 3x40G and 100G problem.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of CFP optical module compatible apparatus and method, in order to problem that can't be compatible between 2x40G, 3x40G and these 3 kinds of CFP optical modules of 100G in the solution prior art.
Embodiment of the invention technical scheme is following:
A kind of CFP optical module compatible apparatus comprises: control unit, Multiplexing Unit and signal transmission unit; Wherein, said Multiplexing Unit and said signal transmission unit respectively comprise a plurality of transmission channels;
Said control unit; Be used for type according to current C FP optical module; Control the enabled of said Multiplexing Unit; And under the said Multiplexing Unit of control situation about enabling, according to the preset CFP optical module type and the corresponding relation of the transmission channel in the said Multiplexing Unit, in the said Multiplexing Unit of control connection with the corresponding transmission channel of type of current C FP optical module; Wherein, the type of CFP optical module comprises: 1*40G, 2*40G, 3*40G or 100G; Said Multiplexing Unit is used for the transmission channel that is communicated with through the control of said control unit, between said signal transmission unit and current C FP optical module, is communicated with transmission signals; Said signal transmission unit, be used for directly transmission from or be sent to the signal of current C FP optical module, perhaps through said Multiplexing Unit transmission from or be sent to the signal of current C FP optical module.
A kind of CFP optical module compatibility method; Comprise: CFP optical module compatible apparatus is according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the said Multiplexing Unit, in the inner corresponding transmission channel of selecting with current C FP optical module of type of said CFP optical module compatible apparatus; Through the transmission of selected transmission channel from or be sent to the signal of current C FP optical module.
CFP optical module compatible apparatus according to embodiment of the invention proposition; Control the enabled of Multiplexing Unit according to the type of current C FP optical module through control unit wherein; And according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit; Control is communicated with in the Multiplexing Unit the corresponding transmission channel of type with current C FP optical module; The signal of the CFP optical module of 1*40G, 2*40G, 3*40G or the 100G that can realize being connected with this compatible apparatus through this compatible apparatus transmits; When the two ends of transmission route all use this compatible apparatus to connect the CFP optical module of 1*40G, 2*40G, 3*40G or 100G; Can realize compatible between these four kinds of CFP optical modules of 1*40G, 2*40G, 3*40G and the 100G at transmission route two ends, thus solve can't be compatible between 2x40G, 3x40G and these 3 kinds of CFP optical modules of 100G in the prior art problem.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Fig. 1 a and Fig. 1 b are the pin definitions sketch map of 1x40G in the prior art, 2x40G, 3x40G and 100G CFP optical module;
Fig. 2 a and Fig. 2 b are the end face pin definitions difference sketch map of 1x40G in the prior art, 2x40G, 3x40G and 100G CFP optical module;
Fig. 3 a is the structured flowchart of the CFP optical module compatible apparatus that provides of the embodiment of the invention;
Fig. 3 b is the workflow diagram of the compatibility method of the CFP optical module that provides of the embodiment of the invention;
The preferred structure block diagram of the CFP optical module compatible apparatus that Fig. 4 provides for the embodiment of the invention;
Another preferred structure block diagram of the CFP optical module compatible apparatus that Fig. 5 provides for the embodiment of the invention;
The concrete structured flowchart of realizing of CFP optical module compatible apparatus that Fig. 6 provides for the embodiment of the invention;
CFP optical module type and the corresponding relation sketch map of transmission channel in multiplexer of Fig. 7 during to be that the embodiment of the invention is concrete use.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described, should be appreciated that embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
To problem that can't be compatible between these 3 kinds of CFP optical modules of 2x40G, 3x40G and 100G in the prior art, the embodiment of the invention has proposed a kind of CFP optical module compatible apparatus.According to this compatible apparatus; Control the enabled of Multiplexing Unit according to the type of current C FP optical module through control unit wherein; And according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit; Control is communicated with in the Multiplexing Unit the corresponding transmission channel of type with current C FP optical module; The signal of the CFP optical module of 1*40G, 2*40G, 3*40G or the 100G that can realize being connected with this compatible apparatus through this compatible apparatus transmits; When the two ends of transmission channel all use this compatible apparatus to connect the CFP optical module of 1*40G, 2*40G, 3*40G or 100G, can realize compatible between these four kinds of CFP optical modules of 1*40G, 2*40G, 3*40G and the 100G at transmission channel two ends, thereby solve the aforementioned problems in the prior.
Be elaborated in the face of the embodiment of the invention down.
The structured flowchart of the CFP optical module compatible apparatus that the embodiment of the invention provides has been shown among Fig. 3 a, and as shown in Figure 3, this device comprises: control unit 1, Multiplexing Unit 2 and signal transmission unit 3; Wherein, Multiplexing Unit 2 respectively comprises a plurality of transmission channels with signal transmission unit 3, and transmission channel comprises sendaisle or receive path;
Control unit 1; Be used for type according to current C FP optical module; The enabled of control Multiplexing Unit 2; And under control Multiplexing Unit 2 situation about enabling, according to the preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit 2, in the control connection Multiplexing Unit 2 with the corresponding transmission channel of type of current C FP optical module; Wherein, the type of CFP optical module comprises: 1*40G, 2*40G, 3*40G or 100G; Preferably, control unit 1 obtains the type information of current C FP optical module when detecting current C FP optical module and being connected like Fig. 3 a shown device;
Multiplexing Unit 2 is used for the transmission channel that is communicated with through control unit 1 control, between signal transmission unit 3 and current C FP optical module, is communicated with transmission signals;
Signal transmission unit 3, be used for directly transmission from or be sent to the signal of current C FP optical module, perhaps through Multiplexing Unit 2 transmission from or be sent to the signal of current C FP optical module.
Fig. 3 b shows the workflow diagram of the compatibility method of the CFP optical module that the embodiment of the invention provides, and also is the operation principle of Fig. 3 a shown device, and shown in Fig. 3 b, this method comprises:
Step 301, CFP optical module compatible apparatus be according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit, in the inner corresponding transmission channel of selecting with current C FP optical module of type of CFP optical module compatible apparatus; Preferably, CFP optical module compatible apparatus obtains the type information of current C FP optical module when detecting current C FP optical module and be connected with CFP optical module compatible apparatus; Wherein, transmission channel comprises receive path or sendaisle;
Step 302, through the transmission of selected transmission channel from or be sent to the signal of current C FP optical module.
According to this CFP optical module compatible apparatus and operation principle thereof; Through the enabled of the control unit in this device according to the type control Multiplexing Unit of current C FP optical module; And according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit; Control is communicated with in the Multiplexing Unit the corresponding transmission channel of type with current C FP optical module; The signal of the CFP optical module of 1*40G, 2*40G, 3*40G or the 100G that can realize being connected with this compatible apparatus through this compatible apparatus transmits; When the two ends of transmission channel all use this compatible apparatus to connect the CFP optical module of 1*40G, 2*40G, 3*40G or 100G; Can realize compatible between these four kinds of CFP optical modules of 1*40G, 2*40G, 3*40G and the 100G at transmission channel two ends, thus solve can't be compatible between 2x40G, 3x40G and these 3 kinds of CFP optical modules of 100G in the prior art problem.
The preferred embodiment of the embodiment of the invention is described below.
A kind of preferred mode, Fig. 4 shows the preferred structure block diagram of the CFP optical module compatible apparatus that the embodiment of the invention provides, and as shown in Figure 4, Multiplexing Unit 2 specifically comprises: two multiplexers 21,22, each multiplexer includes a plurality of reusable transmission channels; Signal transmission unit 3 specifically comprises: medium access control (MAC, Media Access Control) chip 31; The transmission channel of MAC chip 31 comprises direct channel and multiplex channel; Direct channel be used for dissimilar CFP optical modules between the identical synonym transmission channel of end face transmission channel definition be connected (the following stated synonym transmission channel is the identical end face transmission channel of definition between the dissimilar CFP optical modules); Multiplex channel is used for after the reusable transmission channel of multiplexer 21 or multiplexer 22 is connected, and is connected with the different contrary opinion transmission channel of end face transmission channel definition between the dissimilar CFP optical module (the following stated contrary opinion transmission channel is the different end face transmission channel of definition between the dissimilar CFP optical modules).
Shown in Fig. 2 a and Fig. 2 b, the synonym transmission channel is TX0 ~ TX3 and RX0 ~ RX3, wherein; TX0 comprises differential lines to TX0n, TX0p, and TX1 comprises differential lines to TX1n, TX1p, and TX2 comprises that differential lines is to TX2n, TX2p; TX3 comprises differential lines to TX3n, TX3p, and RX0 comprises differential lines to RX0n, RX0p, and RX1 comprises that differential lines is to RX1n, RX1p; RX2 comprises differential lines to RX2n, RX2p, and RX3 comprises that differential lines is to RX3n, RX3p.Except that above-mentioned synonym transmission channel, other transmission channel is the contrary opinion transmission channel among Fig. 2 a and Fig. 2 b.
Then, in device as shown in Figure 4, be that control unit 1 specifically is used for: control multiplexer 21,22 forbiddings under the situation of CFP optical module of 1*40G in current C FP module; Then, MAC chip 31 specifically is used for: directly transmission from or be sent to the signal of current C FP optical module;
Be under the situation of CFP optical module of 2*40G, 3*40G or 100G in current C FP module; Control unit 1 specifically is used for: control multiplexer 21 and/or multiplexer 22 enable, for example; CFP optical module for 2*40G; A multiplexer can be enabled,, two multiplexers can be enabled for the CFP optical module of 3*40G and 100G; MAC chip 31 specifically is used for: the multiplexer transmission through enabling from or be sent to the signal of current C FP optical module.
Further; The CFP optical module compatible apparatus that the embodiment of the invention provides will be realized the compatibility to four types CFP optical module; Its key is the compatibility that will realize contrary opinion transmission channel between the dissimilar CFP optical modules; Also promptly will realize the correct transmission to the signal of the contrary opinion transmission channel of dissimilar CFP optical modules, this function mainly selects the different transmission channels in multiplexer 21 and/or the multiplexer 22 to realize through control unit 1.
A kind of preferred mode, Fig. 5 shows another preferred structure of the CFP optical module compatible apparatus that the embodiment of the invention provides, and this preferred structure has provided the concrete structure of MAC chip 31 and multiplexer 21,22.
As shown in Figure 5, MAC chip 31 comprise at least 3 transmission groups (N1 ..., Ni), each transmission group comprises 8 transmission channels, with the 3 groups of transmission channels (comprising receive path and sendaisle) in coupling 30*40G and the 100G CFP optical module.
Each multiplexer comprises at least two transmission groups, and each transmission group comprises 4 transmission groupings (T1, T2, T3 and T4), and each transmission divides into groups to comprise 2 transmission channels, also is that each transmission group of multiplexer also comprises 8 transmission channels; In each transmission was divided into groups, the end that two transmission channels are connected to the MAC chip was multiplexing, and multiplexing back one end is connected with a multiplex channel of MAC chip, and the passage between end after multiplexing and other the not multiplexing two ends constitutes first passage and second channel respectively; In each multiplexer or between per two multiplexers, also comprise a plurality of multiplexing group of predetermined (M1;, Mj), each multiplexing group comprises two transmission groupings; Between two transmission of one multiplexing group are divided into groups; At an end that connects the CFP optical module, second channel that the first passage that first transmission is divided into groups and second transmission are divided into groups is multiplexing, and the passage after multiplexing is used for being connected with a contrary opinion transmission channel of CFP optical module.In addition, the transmission channel that is not included in multiplexing group is connected with a contrary opinion transmission channel of CFP optical module respectively.
For example; In multiplexer 22, predetermined multiplexing group comprises: M1, M2, M3 and M4, a wherein multiplexing group M1 comprise that transmission grouping T1 and T2, multiplexing group of M2 comprise that transmission grouping T2 and T3, multiplexing group of M3 comprise that transmission grouping T3 and T4, multiplexing group of M4 comprise transmission grouping T4 and T1; Wherein T1 comprises transmission channel S1, S2; T2 comprises transmission channel S3, S4, and T3 comprises transmission channel S5, S6, and T4 comprises transmission channel S7, S8.The structure of multiplexer 21 is identical with the structure of multiplexer 22, repeats no more here.
At an end that is connected with MAC chip 31; In transmission grouping T1; S1 is connected MAC chip 31 with S2 a end is multiplexed with receiving port IN1; Receiving port IN1 after multiplexing is connected with a multiplex channel of MAC chip 31, and the transmission channel between IN1 and the S1 is a first passage, and the transmission channel between IN1 and the S2 is a second channel.In transmission grouping T2; S3 is connected MAC chip 31 with S4 a end is multiplexed with receiving port IN2; Receiving port IN2 after multiplexing is connected with a multiplex channel of MAC chip 31, and the transmission channel between IN2 and the S3 is a first passage, and the transmission channel between IN2 and the S4 is a second channel.In transmission grouping T3; S5 is connected MAC chip 31 with S6 a end is multiplexed with receiving port IN3; Receiving port IN3 after multiplexing is connected with a multiplex channel of MAC chip 31, and the transmission channel between IN3 and the S5 is a first passage, and the transmission channel between IN3 and the S6 is second transmission channel.In transmission grouping T4; S7 is connected MAC chip 31 with S8 a end is multiplexed with receiving port IN4; Receiving port IN4 after multiplexing is connected with a multiplex channel of MAC chip 31, and the transmission channel between IN4 and the S7 is a first passage, and the transmission channel between IN4 and the S8 is second transmission channel.
And, at an end that is connected with the CFP optical module, in multiplexing group of M1; The second channel of transmission grouping T1 is multiplexed with transmit port OUT1 with the first passage of transmission grouping T2; In multiplexing group of M2, the second channel of transmission grouping T2 is multiplexed with transmit port OUT2 with the first passage of transmission grouping T3, in multiplexing group of M3; The second channel of transmission grouping T3 is multiplexed with transmit port OUT3 with the first passage of transmission grouping T4; In multiplexing group of M4, the second channel of transmission grouping T4 is multiplexed with transmit port OUT4 with the first passage of transmission grouping T1, and OUT1, OUT2, OUT3 and OUT4 are connected with a contrary opinion transmission channel of CFP optical module respectively.Three above-mentioned first passages constitute the first passage group, and three second channels constitute the second channel group.
Structure in the multiplexer 21 is identical with structure in the multiplexer 22, repeats no more here.
Then; The preset CFP optical module type and the corresponding relation of the transmission channel in the Multiplexing Unit can be specially: the first passage group in CFP optical module type and the multiplexer or the corresponding relation of second channel group; Like this; When current C FP optical module was the CFP optical module of 20*40G, 3*40G or 100G, control unit can be according to type and this corresponding relation of CFP optical module, and control is communicated with in the multiplexer and corresponding first passage group of current C FP type of module or second channel group.
Like this; Through structure and the annexation of above-mentioned MAC chip 31 with multiplexer 21,22; And the identification control of passing through control unit 1; The CFP optical module compatible apparatus that makes the embodiment of the invention provide can be connected, realize the signal transmission with the CFP optical module of 10*40G, 20*40G, 3*40G or 100G respectively; And the CFP optical module compatible apparatus that uses the embodiment of the invention to provide at the two ends of transmission route respectively, compatible between these four kinds of CFP optical modules of 1*40G, 2*40G, 3*40G and 100G that the CFP optical module compatible apparatus that just can realize providing with the embodiment of the invention is connected.
Describe in the face of the concrete situation about realizing of the embodiment of the invention down.
Fig. 6 shows the concrete structured flowchart of realizing of CFP optical module compatible apparatus that the embodiment of the invention provides; This device comprises MAC chip 61, multiplexer 62a, 62b; Control unit 63 comprises CPU 631, CPLD (CPLD, Complex Programmable Logic Device) 632, crystal oscillator 633, clock buffer 634.
Wherein, CPU 631 adopts serial management interface (SMI; Serial Management Interface) SMI interface and CFP optical module communicate, and this SMI interface specifically comprises MDC signal (being used for transmit clock signal) and MDIO signal (being used for transmission of data signals); CPU 631 adopts twin wire universal serial bus (I2C, INTR-Integrated Circuit) interface to communicate by letter with multiplexer 62a, 62b, and this I2C interface specifically comprises SCL signal (transmit clock signal) and SDA signal (transmission of data signals); CPU 631 through local bus (Localbus) communicate by letter with CPLD 632, and through INTR pin reception triggering signal (can be defined as signal INTR# particularly here) from CPLD632, this triggering signal INTR# representes to have during for low level the CFP optical module to be connected with device as shown in Figure 6, representes not have the CFP optical module to be connected during for high level.
CPLD 632 is through sending signal (can be defined as PD2# and PD1# signal particularly here) to the PD pin (can be defined as the PD1# pin particularly here) of the PD of multiplexer 62a pin (can be defined as the PD2# pin particularly here) and multiplexer 62b respectively; Signal PD1# and PD2# are enable signals during for high level signal; Signal PD2# is used to enable multiplexer 62a; Signal PD1# is used to enable multiplexer 62b, when signal PD1# or PD2# are disable signal during for low level signal; CPLD 632 is the OE signal to crystal oscillator 633 input triggering signals also, and the OE signal representes that enable signal, low level are disable signal during for high level; Whether CPLD 632 also detects through interface (can be defined as interface on the throne here particularly is the Present interface) has the CFP optical module to connect, and particularly, these 4 kinds of CFP optical modules of 1x40G, 2x40G, 3x40G and 100G all have a MOD_ABS signal; Whether this signal indication optical module is on the throne, and this signal is drop-down by force (through a grounding through resistance less than 100 ohm) in CFP optical module inside, drop-down usefulness " 0 " expression; Draw (connecing 3.3V voltage) on the Present interface end of CPLD 632 is weak such as resistance value R1 through a 4.7K ohm, on draw usefulness " 1 " expression, when the CFP optical module is connected to device as shown in Figure 6; MOD ABS signal is input to the Present interface; Strong draw the result who links together for drop-down on drop-down and weak, promptly show as " 0 ", thus at the CFP optical module with before said device is connected; The present signal of CPLD 632 is " 1 "; The CFP optical module is with after device as shown in Figure 6 is connected, because CFP optical module inside is drop-down by force, the present signal of CPLD 632 is " 0 " by " 1 " saltus step; At this moment, low level INTR# signal of CPLD 632 outputs is to the INTR pin of CPU 631.
Crystal oscillator 633 is according to working from the high level OE signal of CPLD 632; Produce the clock signal of a 161.1328M; This clock signal is through the clock signal of 2 161.1328M of clock buffer 634 fan-outs, and these two clock signals are exported to the CFP optical module through CLKOUT1 interface and CLKOUT2 interface respectively, in the CFP optical module, receives this clock signal by REF pin or S1REF pin; Wherein, The CFP optical module of 2*40G needs 2 clock signals, and the CFP optical module of 1*40G and 3*40G is the clock signal when not required, and the optical module of 100G needs 1 clock signal.
The annexation of the synonym transmission channel of MAC chip 61 and CFP optical module; And through multiplexer 62a, 62b corresponding annexation with the contrary opinion transmission channel of CFP optical module; As shown in Figure 7; Promptly; The WC0_lane0_TX of MAC chip 61, WC0_lane1_TX, WC0_lane2_TX and WC0_lane3_TX are connected with TX3 with synonym transmission channel TX0, TX1, TX2 respectively, and WC0_lane0_RX, WC0_lane1_RX, WC0_lane2_RX and WC0_lane3_RX are connected with RX3 with synonym transmission channel RX0, RX1, RX2 respectively.Particularly, in the CFP optical module, transmission channel TX comprises differential lines to TXn and TXp, and transmission channel RX comprises differential lines to RXn and RXp, and TX is a sendaisle, and RX is a receive path.
For the contrary opinion transmission channel; Corresponding respectively S1_TX0, S1_TX1, S1_TX2 and the S1_TX3 that is connected the CFP optical module of 1*40G, 2*40G and 3*40G of the WC1_lane0_TX of MAC chip 61, WC1_lane1_TX, WC1_lane2_TX and WC1_lane3_TX, corresponding TX4, TX5, TX6 and the TX7 that connects the optical module of 100G; 4 of CFP optical module that the WC2_lane0_TX of MAC chip 61, WC2_lane1_TX, WC2_lane2_TX and WC2_lane3_TX be corresponding respectively to be connected 1*40G and 2*40G are not connected (NC; None Connection) pin; Corresponding S2_TX0, S2_TX1, S2_TX2 and the S2_TX3 that connects the CFP optical module of 3*40G, corresponding TX8 and TX9 and two NC pins that connect the CFP optical module of 100G; Corresponding respectively S1_RX0, S1_RX1, S1_RX2 and the S1_RX3 that is connected the CFP optical module of 1*40G, 2*40G and 3*40G of WC1_lane0_RX, WC1_lane1_RX, WC1_lane2_RX and WC1_lane3_RX, corresponding RX4, RX5, RX6 and the RX7 that connects the optical module of 100G; Corresponding respectively 4 the NC pins that are connected the CFP optical module of 1*40G and 2*40G of the WC2_lane0_RX of MAC chip 61, WC2_lane1_RX, WC2_lane2_RX and WC2_lane3_RX; Corresponding S2_RX0, S2_RX1, S2_RX2 and the S2_RX3 that connects the CFP optical module of 3*40G; Corresponding RX8 and the RX9 that connects the CFP optical module of 100G, and two NC pins.
Multiplexing structure among multiplexer 62a, the 62b is as follows.
INC0 ~ INC3 of multiplexer 62a is for receiving pin; Be connected with WC1_lane0_TX, WC1_lane1_TX, WC1_lane2_TX and the WC1_lane3_TX of MAC chip 61 respectively; OUTC0 ~ OUTC3 is connected with WC1_lane0_RX, WC1_lane1_RX, WC1_lane2_RX and the WC1_lane3_RX of MAC chip 61 respectively for sending pin.INC0 is connected with OUTB0 with OUTA0 respectively, and the transmission channel between INC0 and the OUTA0 is an A channel, and the transmission channel between INC0 and the OUTB0 is the B passage.INC1 is connected with OUTB1 with OUTA1 respectively, and the transmission channel between INC1 and the OUTA1 is an A channel, and the transmission channel between INC1 and the OUTB1 is the B passage.INC2 is connected with OUTB2 with OUTA2 respectively, and the transmission channel between INC2 and the OUTA2 is an A channel, and the transmission channel between INC2 and the OUTB2 is the B passage.INC3 is connected with OUTB3 with OUTA3 respectively, and the transmission channel between INC3 and the OUTA3 is an A channel, and the transmission channel between INC3 and the OUTB3 is the B passage.OUTC0 is connected with INB0 with INA0 respectively, and the passage between OUTC0 and the INA0 is an A channel, and the transmission channel between OUTC0 and the INB0 is the B passage.OUTC1 is connected with INB1 with INA1 respectively, and the transmission channel between OUTC1 and the INA1 is an A channel, and the transmission channel between OUTC1 and the INB1 is the B passage.OUTC2 is connected with INB2 with INA2 respectively, and the transmission channel between OUTC2 and the INA2 is an A channel, and the transmission channel between OUTC2 and the INB2 is the B passage.OUTC3 is connected with INB3 with INA3 respectively, and the transmission channel between OUTC3 and the INA3 is an A channel, and the transmission channel between OUTC3 and the INB3 is the B passage.
INC0 ~ INC3 of multiplexer 62b is for receiving pin; Be connected with WC2_lane0_TX, WC2_lane1_TX, WC2_lane2_TX and the WC2_lane3_TX of MAC chip 61 respectively; OUTC0 ~ OUTC3 is connected with WC2_lane0_RX, WC2_lane1_RX, WC2_lane2_RX and the WC2_lane3_RX of MAC chip 61 respectively for sending pin.The internal structure of multiplexer 62b is identical with 62a, repeats no more here.Whole A channels of multiplexer 62a and multiplexer 62b constitute the A channel group, and all the B passage constitutes the B channel group.
In multiplexer 62a and multiplexer 62b; OUTB0 and the OUTA1 of multiplexer 62a is multiplexing, OUTB1 and OUTA2 is multiplexing, OUTB2 and OUTA3 are multiplexing; The OUTA0 of the OUTB3 of multiplexer 62a and multiplexer 62b is multiplexing; The OUTB1 of the OUTA0 of multiplexer 62a and multiplexer 62b is multiplexing; INB0 and the INA1 of multiplexer 62a is multiplexing, INB1 and INA2 is multiplexing, INB2 and INA3 are multiplexing, and the INA0 of the INB3 of multiplexer 62a and multiplexer 62b is multiplexing, and the INB1 of the INA0 of multiplexer 62a and multiplexer 62b is multiplexing.
Multiplexing structure through multiplexer 62a, 62b can be known: multiplexer 62a and the corresponding CFP optical module that is connected 100G of the A channel group among the multiplexer 62b; B channel group among the multiplexer 62a is corresponding to the CFP optical module of 2*40G; B channel group among multiplexer 62a and the multiplexer 62b is corresponding to the CFP optical module of 3*40G; That is the transmission channel corresponding relation that, MAC chip 61 is connected through A channel group or B channel group with the CFP optical module is as shown in Figure 7.
The operation principle of device shown in Figure 6 is as follows:
Under step 1, the initial condition, multiplexer 62a, 62b are in forbidding (powerdown) state, and CPLD 632 control crystal oscillators 633 produce and clock signal, i.e. the signal of CPLD 632 output is configured to: PD1#=" 0 ", PD2#=" 0 ", OE=" 1 ";
Whether saltus step has judged whether that the CFP optical module is connected with device as shown in Figure 6 through detecting the present signal for step 2, CPLD 632; When detected present signal jumps to low level by high level; Expression has the CFP optical module to be connected with said device; Handle this moment and proceed to step 3, otherwise, handle and return step 2;
Step 3, low level triggering signal INTR# of CPLD 632 outputs give the INTR pin of CPU 631;
Step 4, CPU 631 interrupt responses read the type information of the CFP optical module that is connected with device as shown in Figure 6 through MDC, the MDIO signal of SMI interface;
Step 5, CPU 631 judge that according to the type information of the CFP optical module that reads the CFP optical module belongs to any CFP optical module, when belonging to the CFP optical module of 1*40G, handle proceeding to step 6; When belonging to the CFP optical module of 2*40G; Processing proceeds to step 7, when belonging to the CFP optical module of 3*40G, handles proceeding to step 8; When belonging to the CFP optical module of 100G, handle proceeding to step 9;
Step 6, when the CFP optical module belongs to the CFP optical module of 1*40G; CPU 631 does not do operation; At this moment; MAC chip 61 is connected with TX0, TX1, TX2 and the TX3 of the CFP optical module of 1*40G with WC0_lane3_TX through WC0_lane0_TX, WC0_lane1_TX, WC0_lane2_TX, is connected the processing end with RX0, RX1, RX2 and the RX3 of the CFP optical module of 1*40G respectively through WC0_lane0_RX, WC0_lane1_RX, WC0_lane2_RX and WC0_lane3_RX.
Step 7, when the CFP optical module belongs to the CFP optical module of 2*40G; CPU 631 enables multiplexer 62a through local bus notice CPLD 632; CPLD 632 enables multiplexer 62a through the PD2# signal of output high level; CPU 631 enables the B channel group of multiplexer 62a through SCL, the SDA signal of I2C interface; At this moment; MAC chip 61 is connected with TX0, TX1, TX2 and the TX3 of the CFP optical module of 2*40G with WC0_lane3_TX through WC0_lane0_TX, WC0_lane1_TX, WC0_lane2_TX; Be connected with RX0, RX1, RX2 and the RX3 of the CFP optical module of 2*40G through WC0_lane0_RX, WC0_lane1_RX, WC0_lane2_RX and WC0_lane3_RX; Be connected with S1_TX0, S1_TX1, S1_TX2 and the S1_TX3 of the CFP optical module of 2*40G through WC1_lane0_TX, WC1_lane1_TX, WC1_lane2_TX and WC1_lane3_TX, be connected with S1_RX0, S1_RX1, S1_RX2 and the S1_RX3 of the CFP optical module of 2*40G through WC1_lane0_RX, WC1_lane1_RX, WC1_lane2_RX and WC1_lane3_RX, processing finishes.
Step 8, when the CFP optical module belongs to the CFP optical module of 3*40G; CPU 631 enables multiplexer 62a and multiplexer 62b through local bus notice CPLD 632; CPLD 632 enables multiplexer 62a through the PD2# signal of output high level; PD1# signal through the output high level enables multiplexer 62b; And pass through OE interface output low level signal and give crystal oscillator 633; So that crystal oscillator 633 quits work; CPU 631 enables the B channel group of multiplexer 62a through SCL, the SDA signal of I2C interface; At this moment; MAC chip 61 is connected with TX0, TX1, TX2 and the TX3 of the CFP optical module of 3*40G with WC0_lane3_TX through WC0_lane0_TX, WC0_lane1_TX, WC0_lane2_TX, is connected with RX0, RX1, RX2 and the RX3 of the CFP optical module of 3*40G through WC0_lane0_RX, WC0_lane1_RX, WC0_lane2_RX and WC0_lane3_RX, is connected with S1_TX0, S1_TX1, S1_TX2 and the S1_TX3 of the CFP optical module of 3*40G through WC1_lane0_TX, WC1_lane1_TX, WC1_lane2_TX and WC1_lane3_TX; Be connected with S1_RX0, S1_RX1, S1_RX2 and the S1_RX3 of the CFP optical module of 3*40G through WC1_lane0_RX, WC1_lane1_RX, WC1_lane2_RX and WC1_lane3_RX; Through corresponding S2_TX0, S2_TX1, S2_TX2 and the S2_TX3 that is connected the CFP optical module of 3*40G of WC2_lane0_TX, WC2_lane1_TX, WC2_lane2_TX and WC2_lane3_TX, through corresponding S2_RX0, S2_RX1, S2_RX2 and the S2_RX3 that is connected the CFP optical module of 3*40G of WC2_lane0_RX, WC2_lane1_RX, WC2_lane2_RX and WC2_lane3_RX, processing finishes.
Step 9, when the CFP optical module belongs to the CFP optical module of 100G; CPU 631 enables multiplexer 62a and multiplexer 62b through local bus notice CPLD 632; CPLD 632 enables multiplexer 62a through the PD2# signal of output high level; PD1# signal through the output high level enables multiplexer 62b; CPU631 enables the A channel group of multiplexer 62a through SCL, the SDA signal of I2C interface; At this moment; MAC chip 61 is connected with TX0, TX1, TX2 and the TX3 of the CFP optical module of 100G with WC0_lane3_TX through WC0_lane0_TX, WC0_lane1_TX, WC0_lane2_TX; Be connected with RX0, RX1, RX2 and the RX3 of the CFP optical module of 100G through WC0_lane0_RX, WC0_lane1_RX, WC0_lane2_RX and WC0_lane3_RX, through corresponding TX4, TX5, TX6 and the TX7 that is connected the optical module of 100G of WC1_lane0_TX, WC1_lane1_TX, WC1_lane2_TX and WC1_lane3_TX, through corresponding TX8 and TX9 and two the NC pins that are connected the CFP optical module of 100G of WC2_lane0_TX, WC2_lane1_TX, WC2_lane2_TX and WC2_lane3_TX; Through corresponding RX4, RX5, RX6 and the RX7 that is connected the optical module of 100G of WC1_lane0_RX, WC1_lane1_RX, WC1_lane2_RX and WC1_lane3_RX; Through corresponding RX8 and the RX9 that is connected the CFP optical module of 100G of WC2_lane0_RX, WC2_lane1_RX, WC2_lane2_RX and WC2_lane3_RX, and two NC pins, processing finishes.
Can be connected with the CFP optical module of 1*40G, 2*40G, 3*40G and 100G respectively through device as shown in Figure 6; Transmission from or be sent to the signal of these four kinds of CFP optical modules; When device as shown in Figure 6 lays respectively at the two ends of transmission route; Can transmit the signal between above-mentioned four kinds of CFP optical modules, thereby reach the purpose of the CFP optical module of compatible 1*40G, 2*40G, 3*40G and 100G.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. a CFP optical module compatible apparatus is characterized in that, comprising: control unit, Multiplexing Unit and signal transmission unit; Wherein, said Multiplexing Unit and said signal transmission unit respectively comprise a plurality of transmission channels;
Said control unit; Be used for type according to current C FP optical module; Control the enabled of said Multiplexing Unit; And under the said Multiplexing Unit of control situation about enabling, according to the preset CFP optical module type and the corresponding relation of the transmission channel in the said Multiplexing Unit, in the said Multiplexing Unit of control connection with the corresponding transmission channel of type of current C FP optical module; Wherein, the type of CFP optical module comprises: 1*40G, 2*40G, 3*40G or 100G;
Said Multiplexing Unit is used for the transmission channel that is communicated with through the control of said control unit, between said signal transmission unit and current C FP optical module, is communicated with transmission signals;
Said signal transmission unit, be used for directly transmission from or be sent to the signal of current C FP optical module, perhaps through said Multiplexing Unit transmission from or be sent to the signal of current C FP optical module.
2. device according to claim 1 is characterized in that, said control unit also is used for:
When detecting current C FP optical module and be connected, obtain the type information of current C FP optical module with said device.
3. device according to claim 1 is characterized in that, said Multiplexing Unit specifically comprises: two multiplexers, each multiplexer include a plurality of reusable transmission channels;
Said signal transmission unit specifically comprises: medium access control MAC chip; The transmission channel of said MAC chip comprises direct channel and multiplex channel; Said direct channel be used for dissimilar CFP optical modules between the identical synonym transmission channel of end face transmission channel definition be connected; Said multiplex channel is used for after the reusable transmission channel of said multiplexer is connected, and is connected with the different contrary opinion transmission channel of end face transmission channel definition between the dissimilar CFP optical module.
4. device according to claim 3 is characterized in that, is that said control unit specifically is used under the situation of CFP optical module of 1*40G in current C FP module: control said multiplexer forbidding; Said MAC chip specifically is used for: directly transmission from or be sent to the signal of current C FP optical module;
Be that said control unit specifically is used for: control one or two said multiplexer and enable under the situation of CFP optical module of 2*40G, 3*40G or 100G in current C FP module; Said MAC chip specifically is used for: through the said multiplexer transmission that enables from or be sent to the signal of current C FP optical module.
5. device according to claim 3 is characterized in that, said MAC chip comprises at least 3 transmission groups, and each transmission group comprises 8 transmission channels;
Each multiplexer comprises at least two transmission groups, and each transmission group comprises 4 transmission groupings, and each transmission grouping comprises 2 transmission channels;
In each transmission is divided into groups; The end that two transmission channels are connected to said MAC chip is multiplexing; Multiplexing back one end is connected with a multiplex channel of said MAC chip, and the transmission channel between end after multiplexing and other the not multiplexing two ends constitutes first passage and second channel respectively;
In each multiplexer or between per two multiplexers, comprise a plurality of predetermined multiplexing group; Each multiplexing group comprises two transmission groupings; Between two transmission of one multiplexing group are divided into groups; At an end that connects the CFP optical module, second channel that the first passage that first transmission is divided into groups and second transmission are divided into groups is multiplexing, and the passage after multiplexing is used for being connected with a said contrary opinion transmission channel of CFP optical module; The transmission channel that is not included in the said multiplexer in multiplexing group is connected with a said contrary opinion transmission channel of CFP optical module respectively.
6. device according to claim 5 is characterized in that, whole first passages of said at least two multiplexers constitute the first passage group, and all second channel constitutes the second channel group;
The said preset CFP optical module type and the corresponding relation of the transmission channel in the said Multiplexing Unit specifically comprise: the first passage group in CFP optical module type and the said multiplexer or the corresponding relation of second channel group; Then,
Said control unit specifically is used for: according to current C FP type of module and preset CFP optical module type and the first passage group of said multiplexer or the corresponding relation of second channel group, control is communicated with in the multiplexer enable and corresponding said first passage group of the type of current C FP optical module or said second channel group.
7. according to each described device in the claim 1 to 6, it is characterized in that said transmission channel comprises: sendaisle or receive path.
8. a CFP optical module compatibility method is characterized in that, comprising:
CFP optical module compatible apparatus is according to the type of current C FP optical module and the preset CFP optical module type and the corresponding relation of the transmission channel in the said Multiplexing Unit, in the inner corresponding transmission channel of selecting with current C FP optical module of type of said CFP optical module compatible apparatus;
Through the transmission of selected transmission channel from or be sent to the signal of current C FP optical module.
9. method according to claim 8 is characterized in that, said method also comprises:
Said CFP optical module compatible apparatus obtains the type information of current C FP optical module when detecting current C FP optical module and be connected with said CFP optical module compatible apparatus.
10. method according to claim 8 is characterized in that, said transmission channel comprises: sendaisle or receive path.
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CN102572620A (en) * 2012-02-02 2012-07-11 中兴通讯股份有限公司 Optical module and optical wave multiplexing system

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