CN101369861A - Encoding mode conversion equipment and method - Google Patents
Encoding mode conversion equipment and method Download PDFInfo
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- CN101369861A CN101369861A CNA2007101202123A CN200710120212A CN101369861A CN 101369861 A CN101369861 A CN 101369861A CN A2007101202123 A CNA2007101202123 A CN A2007101202123A CN 200710120212 A CN200710120212 A CN 200710120212A CN 101369861 A CN101369861 A CN 101369861A
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Abstract
The present invention provides a encoded mode transformation equipment and a method thereof, wherein the equipment comprises a network physics layer chip; a first port and a second port arranged in the network physics layer chip and connected through a link; and the link which connects a PMA/PMD module of the first port side and a PMA/PMD module of the second port side through a PCS/PLS and an XMII interface of the first port side and an XMII interface and a PCS/PLS of the second port side. In a normal multiport ethernet network PHY, not only the basic function of the normal multiport PHY is realized, but also the transformation between different encoded modes is effectively realized, thereby the interconnect of the ethernet network device using a nonstandard physics layer encoded mode and the ethernet network device using an IEEE802. 3 standard is realized.
Description
Technical field
The present invention relates to the communications field, and particularly, relate to a kind of encoding mode conversion equipment and method, it can realize the conversion of different ethernet physical layer coded systems.
Background technology
At present, the coded system that adopts of standard IEEE 802.3 10Base-T/100Base-Tx ethernet physical layers be MLT3 (100Mbps), Manchester (Manchester's code) (10Mbps).And some off-gauge ethernet physical layer may adopt other coded system, for example, adopts many level PAM coded systems such as (pulse amplitude modulations).
Interconnected for the ethernet device of realizing adopting non-standard physical layer encodes mode and the ethernet device that adopts the IEEE802.3 standard just needs to realize the conversion of different coding standard.For example, what Ethernet system A physical layer adopted is the MLT3/Manchester coded system of IEEE802.3 standard code, and the employing of Ethernet system B physical layer is PAM3 or coded systems such as PAM4 or PAM5, in this case, if these two different systems are coupled together, just need a kind of translation function of different coding mode.
Yet, the coded system switch technology that still is unrealized and can realizes above-mentioned purpose at present.
Summary of the invention
Consider the above-mentioned problems in the prior art and propose the present invention, for this reason, the present invention aims to provide changing the mechanism of a kind of different coding mode, it not only can realize the function of common multiport PHY, and has increased the function of changing between MLT3, Manchester coded system and PAM coded system.
According to the present invention, provide a kind of encoding mode conversion equipment.
This equipment comprises: the networked physics layer chip; First port and second port place the networked physics layer chip, and connect by link; And link, via PCS/PLS, XMII interface, the XMII interface of second port side, the PCS/PLS of first port side, the PMA/PMD module of first port side and the PMA/PMD module of second port side are connected.
Wherein, link comprises two sublinks, respectively the input of first port is connected to the output of second port, and the output of first port is connected to the input of second port.And first port is connected to the 10/100M network system of standard, and second port is connected to off-gauge 10/100M network system.
Like this, the coding that the PMA/PMD module of first port side is used the 10/100M network system of standard carries out format conversion processing, be converted to PCS/PLS module corresponding encoded that need, the IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of second port side via link, PMA/PMD module converts by second port side is the coding that off-gauge 10/100M network system is used, and exports the output of second port to; The coding that the PMA/PMD module of second port side is used off-gauge 10/100M network system carries out format conversion processing, be converted to PCS/PLS module corresponding encoded that need, the IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of first port side via link, PMA/PMD module converts by first port side is the coding of the 10/100M network system use of standard, and exports the output of first port to.
According to the present invention, also provide a kind of coded system conversion method.
This method comprises following processing: first port of networked physics layer chip is connected by link with second port, wherein, link is connected the PMA/PMD module of first port side and the PMA/PMD module of second port side via PCS/PLS, XMII interface, the XMII interface of second port side, the PCS/PLS of first port side.
Wherein, link comprises two sublinks, respectively the input of first port is connected to the output of second port, and the output of first port is connected to the input of second port.
And this method may further include following processing: first port is connected to the 10/100M network system of standard, and second port is connected to off-gauge 10/100M network system.
Particularly, input for first port side, can comprise following processing: the code signal that the 10/100M network system of standard is used is as input, the code signal that the 10/100M network system of standard is used by the PMA/PMD module of first port side carries out format conversion processing, be converted to that the PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of second port side via link, PMA/PMD module converts by second port side is the coding that off-gauge 10/100M network system is used, and exports the output of second port to.
On the other hand, input for second port side, can comprise following processing: the code signal that off-gauge 10/100M network system is used is as input, the code signal that off-gauge 10/100M network system is used by the PMA/PMD module of second port side carries out format conversion processing, be converted to that the PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of first port side via link, PMA/PMD module converts by first port side is the coding of the 10/100M network system use of standard, and exports the output of first port to.
By the present invention, can realize the conversion of different coding mode effectively, thereby the ethernet device of the ethernet device of the non-standard physical layer encodes mode of realization employing and employing IEEE802.3 standard is interconnected.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the physical layer architecture schematic diagram according to the 100Base-Tx of correlation technique;
Fig. 2 is the schematic diagram according to the encoding mode conversion equipment of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the port connection of the encoding mode conversion equipment of the embodiment of the invention;
Fig. 4 is the schematic diagram that the encoding mode conversion equipment according to the embodiment of the invention is connected with network;
Fig. 5 is the processing schematic diagram that carries out the coded system conversion according to the encoding mode conversion equipment of the embodiment of the invention; And
Fig. 6 is according to the processing schematic diagram of encoding mode conversion equipment of the present invention under the RMII interface environment.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Networked physics layer chip (PHY) generally is connected with the upper strata by the XMII interface.The function of each sublayer of 10Base-T and 100Base-Tx is slightly different, and the 100Base-Tx with standard is an example below, and the function of each sublayer of physical layer is described.
As shown in Figure 1, physical layer mainly comprise Physical Coding Sublayer (PCS), physical signaling sublayer (PLS), physical medium connect the sublayer (Physical Medium AttachmentSublayer, PMA), the relevant sublayers such as (PMD), sublayer of physical medium.Narration for convenience, we lump together PCS, PLS, are referred to as PCS/PLS, with PMA, PMD be in the same place, be referred to as PMA/PMD.
PCS/PLS has two external interfaces, and one is the interface with XMII, and one is the interface with PMA/PMD.PCS/PLS follows ISO/IEC 8802.3 and IEEE 802.3 standards, and function comprises 4B/5B coding and decoding, string and conversion, management and the control etc. to signal.PMA/PMD:PMA (PMA Transmit Sublayer) mainly finishes the conversion of NRZI form of the relevant sublayer with physical medium of serial bit stream (PMD) of PCS sublayer, as for the PMD sublayer, the PMD of 100Base-TX finishes data flow scrambler/descrambling and MLT-3 coding and decoding function and recovers to received signal and function such as even weighing apparatus certainly.
In the present invention, when needs realize to connect the Ethernet system of two different physical layer encodes,, two different ports of PHY chip are coupled together in the inside of networked physics layer chip (PHY).
Apparatus embodiments
According to the embodiment of the invention, provide a kind of encoding mode conversion equipment.
As shown in Figure 2, this equipment comprises: networked physics layer chip 200; First port 202 and second port 204 place the networked physics layer chip; And link 206, via the PCS/PLS of the PCS/PLS of first port side, XMII interface, second port side, the PMA/PMD module (that is PMA/PMD sublayer) of first port side is connected with the PMA/PMD module of second port side.Concrete annexation is referring to Fig. 5.
Particularly, as shown in Figure 3, link 206 can comprise two sublinks, respectively the input of first port is connected to the output of second port, and the output of first port is connected to the input of second port.
And as shown in Figure 4, the 10/100M network system that first port 204 is connected to standard (promptly, adopt the Ethernet of IEEE802.3 standard), second port 206 is connected to off-gauge 10/100M network system (that is, adopting the Ethernet of non-standard physical layer encodes mode).
Like this, the coding that the PMA/PMD module of first port side is used the 10/100M network system of standard (for example, MLT3, Manchester) carry out format conversion processing, be converted into that the PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, via link (particularly, PCS/PLS via first port side, the XMII interface, the XMII interface of second port side, PCS/PLS,) standard code is transferred to the PMA/PMD module of second port side, again by the PMA/PMD module converts of second port side be the coding that uses of off-gauge 10/100M network system (for example, PAM), export the output of second port at last to.
The coding that the PMA/PMD module of second port side is used off-gauge 10/100M network system carries out format conversion processing, be converted into that the PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, via link (particularly, particularly, PCS/PLS via second port side, the XMII interface, the PCS/PLS of first port side,) standard code is transferred to the PMA/PMD module of first port side, PMA/PMD module converts by first port side is the coding of the 10/100M network system use of standard again, exports the output of first port at last to.
Below will describe the XMII interface in detail.The XMII interface comprises multiple interfaces such as MII, RMII, SMII, SS-SMII, DDR-SMII, and the RMII interface with 100M is an example below, illustrates how to realize connection shown in Figure 5.The connection implementation and the RMII interface of interfaces such as other MII, SMII, SS-SMII, DDR-SMII are basic identical, no longer repeat here.As shown in Figure 6, the RMII of first port sends the received signal that signal is connected to second port, and the RMII of second port is sent the RMII received signal that signal is connected to first port.
Method embodiment
According to the present invention, also provide a kind of coded system conversion method.
This method comprises following processing: first port of networked physics layer chip is connected by link with second port, wherein, link is connected the PMA/PMD module of first port side and the PMA/PMD module of second port side via the PCS/PLS of the PCS/PLS of first port side, XMII interface, second port side.
Wherein, link can comprise two sublinks, respectively the input of first port is connected to the output of second port, and the output of first port is connected to the input of second port.
And this method may further include following processing: first port is connected to the 10/100M network system of standard, and second port is connected to off-gauge 10/100M network system.
Particularly, input for first port side, can comprise following processing: the code signal that the 10/100M network system of standard is used is as input, the code signal that the 10/100M network system of standard is used by the PMA/PMD module of first port side carries out format conversion processing, be converted to that the PCS/PLS module can discern, the corresponding encoded of IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of second port side via link, PMA/PMD module converts by second port side is the coding that off-gauge 10/100M network system is used, and exports the output of second port to.
On the other hand, input for second port side, can comprise following processing: the code signal that off-gauge 10/100M network system is used is as input, the code signal that off-gauge 10/100M network system is used by the PMA/PMD module of second port side carries out format conversion processing, be converted to that the PCS/PLS module can discern, the corresponding encoded of IEEE802.3 standard code, standard code is transferred to the PMA/PMD module of first port side via link, PMA/PMD module converts by first port side is the coding of the 10/100M network system use of standard, and exports the output of first port to.
It should be noted that a plurality of specific detail of describing in method embodiment are equally applicable to this apparatus embodiments, the fuzzy the present invention for unnecessary has omitted being repeated in this description same or similar part.
Like this,, realized the conversion of different coding mode effectively, thereby the ethernet device of having realized adopting non-standard physical layer encodes mode and the ethernet device that adopts the IEEE802.3 standard is interconnected by means of the present invention.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an encoding mode conversion equipment is characterized in that, comprising:
The networked physics layer chip;
First port and second port place described networked physics layer chip, and connect by link; And
Described link via PCS/PLS, XMII interface, the XMII interface of second port side, the PCS/PLS of first port side, is connected the PMA/PMD module of first port side and the PMA/PMD module of second port side.
2. encoding mode conversion equipment according to claim 1, it is characterized in that, described link comprises two sublinks, respectively the input of described first port is connected to the output of described second port, and the output of described first port is connected to the input of described second port.
3. encoding mode conversion equipment according to claim 2 is characterized in that, described first port is connected to the 10/100M network system of standard, and described second port is connected to off-gauge 10/100M network system.
4. encoding mode conversion equipment according to claim 3, it is characterized in that, the coding that the PMA/PMD module of described first port side is used the 10/100M network system of described standard carries out format conversion processing, be converted to that described PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, described standard code is transferred to the PMA/PMD module of described second port side via described link, PMA/PMD module converts by described second port side is the coding that described off-gauge 10/100M network system is used, and exports the output of described second port to.
5. encoding mode conversion equipment according to claim 3, it is characterized in that, the coding that the PMA/PMD module of described second port side is used described off-gauge 10/100M network system carries out format conversion processing, be converted to that described PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, described standard code is transferred to the PMA/PMD module of described first port side via described link, PMA/PMD module converts by described first port side is the coding of the 10/100M network system use of described standard, and exports the output of described first port to.
6. a coded format conversion method is characterized in that, comprises following processing:
First port of networked physics layer chip is connected by link with second port, wherein, described link, via PCS/PLS, XMII interface, the XMII interface of second port side, the PCS/PLS of first port side, the PMA/PMD module of first port side and the PMA/PMD module of second port side are connected.
7. coded format conversion method according to claim 6, it is characterized in that, described link comprises two sublinks, respectively the input of described first port is connected to the output of described second port, and the output of described first port is connected to the input of described second port.
8. coded format conversion method according to claim 7 is characterized in that, further comprises following processing:
Described first port is connected to the 10/100M network system of standard, and described second port is connected to off-gauge 10/100M network system.
9. coded format conversion method according to claim 8 is characterized in that, for the input of first port side, comprises following processing:
The code signal that the 10/100M network system of described standard is used is as input, the code signal that the 10/100M network system of described standard is used by the PMA/PMD module of described first port side carries out format conversion processing, be converted to that described PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, described standard code is transferred to the PMA/PMD module of described second port side via described link, PMA/PMD module converts by described second port side is the coding that described off-gauge 10/100M network system is used, and exports the output of described second port to.
10. coded format conversion method according to claim 8 is characterized in that, for the input of second port side, comprises following processing:
The code signal that described off-gauge 10/100M network system is used is as input, the code signal that described off-gauge 10/100M network system is used by the PMA/PMD module of described second port side carries out format conversion processing, be converted to that described PCS/PLS module needs, the corresponding encoded of IEEE802.3 standard code, described standard code is transferred to the PMA/PMD module of described first port side via described link, PMA/PMD module converts by described first port side is the coding of the 10/100M network system use of described standard, and exports the output of described first port to.
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| CNA2007101202123A CN101369861A (en) | 2007-08-13 | 2007-08-13 | Encoding mode conversion equipment and method |
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| CNA2007101202123A CN101369861A (en) | 2007-08-13 | 2007-08-13 | Encoding mode conversion equipment and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000434A1 (en) * | 2010-06-29 | 2012-01-05 | Huawei Technologies Co., Ltd. | Data sending/receiving method with forward error correction and related component and system |
| WO2014161137A1 (en) * | 2013-04-01 | 2014-10-09 | 华为技术有限公司 | Method and device for encoding and decoding in physical layer of the ethernet |
| WO2020043175A1 (en) * | 2018-08-30 | 2020-03-05 | 华为技术有限公司 | Method and apparatus for channelizing physical layer ports |
-
2007
- 2007-08-13 CN CNA2007101202123A patent/CN101369861A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012000434A1 (en) * | 2010-06-29 | 2012-01-05 | Huawei Technologies Co., Ltd. | Data sending/receiving method with forward error correction and related component and system |
| US8738988B2 (en) | 2010-06-29 | 2014-05-27 | Futurewei Technologies, Inc. | Data sending/receiving method with forward error correction and related component and system for gigabit ethernet |
| WO2014161137A1 (en) * | 2013-04-01 | 2014-10-09 | 华为技术有限公司 | Method and device for encoding and decoding in physical layer of the ethernet |
| US9337960B2 (en) | 2013-04-01 | 2016-05-10 | Huawei Technologies Co., Ltd. | Encoding and decoding methods and apparatuses of ethernet physical layer |
| WO2020043175A1 (en) * | 2018-08-30 | 2020-03-05 | 华为技术有限公司 | Method and apparatus for channelizing physical layer ports |
| US11563521B2 (en) | 2018-08-30 | 2023-01-24 | Huawei Technologies Co., Ltd. | Method and apparatus for port channelization at physical layer |
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