CN104092669A - Ethernet-V.35 protocol converter based on CPCI board card - Google Patents
Ethernet-V.35 protocol converter based on CPCI board card Download PDFInfo
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- CN104092669A CN104092669A CN201410285167.7A CN201410285167A CN104092669A CN 104092669 A CN104092669 A CN 104092669A CN 201410285167 A CN201410285167 A CN 201410285167A CN 104092669 A CN104092669 A CN 104092669A
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Abstract
The invention discloses an Ethernet-V.35 protocol converter based on a CPCI board card. The Ethernet-V.35 protocol converter based on the CPCI board card comprises an Ethernet and advanced data link conversion module, a V.35 logic interface conversion module, a V.35 clock generating module, a V.35 interface level conversion module, a CPCI board card achieving module, a microcontroller monitoring circuit module and an Ethernet physical layer signal interconnecting module, wherein the V.35 logic interface conversion module is connected with the Ethernet and advanced data link conversion module, the V.35 clock generating module is connected with the V.35 logic interface conversion module, the V.35 interface level conversion module is connected with the V.35 logic interface conversion module, the CPCI board card achieving module is connected with the Ethernet physical layer signal interconnecting module, and the microcontroller monitoring circuit module is connected with the Ethernet and advanced data link conversion module. The Ethernet-V.35 protocol converter is built in a CPCI case, can achieve switching from an Ethernet interface to a V.35 interface and is good in system communication reliability and good in recoverability.
Description
Technical field
The present invention relates to a kind of data transmission interface converter, be specifically related to a kind of Ethernet interface based on CPCI board and arrive the V.35 protocol converter of interface.
Background technology
Ethernet (Ethernet) is a kind of LAN (Local Area Network) networking technology, and this technology is the IEEE802.3 standard of formulating based on IEEE, and it has stipulated to comprise the content of line, the signal of telecommunication and the medium access layer protocol of physical layer.Which kind of Ethernet no matter, its MAC(Media Access Control) layer all adopts the media access control protocol of contention type.Ethernet is the local area network technology that current application is the most general, and it has replaced other local area network standard to a great extent.
V.35 interface is a kind of high-speed synchronous data interface, for the modem device standard of the 48kbit/S remote data transmission of 6O～108kHz basic group circuit.V.35 interface has highly reliable connectivity with respect to other interfaces in communication network, and support than the data transfer rate of the longer transmitting range of asynchronous serial port and Geng Gao, thereby be widely used in router, data acquisition system, Multimedia video terminal, for example, at bank's networking, power system communication, railway communication systems etc. require high reliability, the public institution of high security to information communication.
Therefore complete the conversion of above-mentioned two kinds of distinct interfaces, for realizing the interconnected of Ethernet and other network, the expansion of local area network (LAN) etc. is of great immediate significance.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of Ethernet-V.35 protocol converter based on CPCI board, is built in CPCI cabinet, has the feature of stable performance.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of Ethernet-V.35 protocol converter based on CPCI board, comprise Ethernet and high-level data link modular converter, V.35 logic interfacing modular converter, V.35 clock generation module, V.35 interface level conversion, CPCI network interface card is realized module, microcontroller supervisory circuit module and ethernet physical layer signal interconnection module, described V.35 logic interfacing modular converter is connected with high-level data link modular converter with described Ethernet, described V.35 clock generation module is connected with described V.35 logic interfacing modular converter, described V.35 interface level modular converter is connected with described V.35 logic interfacing modular converter, described CPCI network interface card is realized module and is connected with described ethernet physical layer signal interconnect module, described microcontroller supervisory circuit module is connected with high-level data link modular converter with described Ethernet.
In technique scheme, described Ethernet and high-level data link modular converter are Application specific integrated circuit for communication.
Further technical scheme, the external SDRAM of described Application specific integrated circuit for communication is as buffering area.
In technique scheme, described V.35 logic interfacing modular converter comprises CPLD (CPLD).
In technique scheme, described V.35 clock generation module comprises CPLD (CPLD).
In technique scheme, described V.35 interface level modular converter adopts SP319 chip, completes Transistor-Transistor Logic level to the V.35 conversion of the level of interface requirement.
In technique scheme, described CPCI network interface card is realized module for the ethernet controller with pci bus.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. the present invention adopts and realizes CPCI network interface card module with the ethernet controller of pci bus, has reduced and has driven exploitation, has increased reliability of communication system.
2. the present invention adopts microprocessor to monitor communication system, thereby assurance system can stable operation, has increased again the restorability of system.
3. the present invention adopts CPLD complete High-Level Data Link Control interface to the conversion of logic interfacing V.35 and produce the Nx64K clock required with interface V.35 of interface logic V.35.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram of the present invention in embodiment mono-.
Fig. 2 is V.35 interface logic block diagram of the present invention in embodiment mono-.
Fig. 3 is Nx64K clock theory diagram of the present invention in embodiment mono-.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment mono-: shown in Figure 1, a kind of Ethernet-V.35 protocol converter based on CPCI board, comprise Ethernet and high-level data link modular converter, V.35 logic interfacing modular converter, V.35 clock generation module, V.35 interface level conversion, CPCI network interface card is realized module, microcontroller supervisory circuit module and ethernet physical layer signal interconnection module, described V.35 logic interfacing modular converter is connected with high-level data link modular converter with described Ethernet, described V.35 clock generation module is connected with described V.35 logic interfacing modular converter, described V.35 interface level modular converter is connected with described V.35 logic interfacing modular converter, described CPCI network interface card is realized module and is connected with described ethernet physical layer signal interconnect module, described microcontroller supervisory circuit module is connected with high-level data link modular converter with described Ethernet.
Described Ethernet and high-level data link modular converter, by Application specific integrated circuit for communication, realized, the present invention has selected RC7222 chip to realize the conversion of ethernet frame and High-Level Data Link Control frame, and the SDRAM that has simultaneously configured 8M for RC7222 is as data buffer zone.
Described microcontroller supervisory circuit module, comprises ARM microprocessor, for communicating by letter by serial communication mode with RC7222 chip, constantly read the operating state of RC7222 inside, if there is extremely, ARM microprocessor can restart RC7222, thereby the system that guarantees has restorability.
Described V.35 logic interfacing modular converter, V.35 interface is the sync cap of a high speed, just physical layer circuit and the electric attribute described now, and the interface that multi-functional Ethernet transducer RC7222 leaves user for is a link layer HDLC interface.So, V.35 logic interfacing modular converter is realized the conversion between above-mentioned two kinds of interfaces, uses hardware description language, realizes logic as shown in Figure 2 in CPLD, thereby allow the remapping of two kinds of interface signals, the MAX3128A that the CPLD that the present invention selects is altera corp.
Described V.35 clock generation module, V.35 interface is a synchronous communication interface, its data transmission bauds is by Nx64Kbps speed, wherein N can be 1 to 32, so we need to produce the clock that a frequency can linear regulation, produce such clock, need to utilize DDS(direct digital synthesis) principle, i.e. Direct Digital.Because we only need to realize the output of square wave, so we do not need DAC, with a comparator, substitute ROM, as shown in Figure 3 simultaneously.
Described CPCI network interface card is realized module and is used for realizing CPCO bus interface, and the CPCI connector that comprises standard can be inserted in the CPCI groove in CPCI cabinet.
Described V.35 interface level modular converter is used for realizing the V.35 needed level of interface, and the DB25 connector that comprises standard, for being connected with other V.35 equipment.
Claims (7)
1. the Ethernet-V.35 protocol converter based on CPCI board, it is characterized in that: comprise Ethernet and high-level data link modular converter, V.35 logic interfacing modular converter, V.35 clock generation module, V.35 interface level conversion, CPCI network interface card is realized module, microcontroller supervisory circuit module and ethernet physical layer signal interconnection module, described V.35 logic interfacing modular converter is connected with high-level data link modular converter with described Ethernet, described V.35 clock generation module is connected with described V.35 logic interfacing modular converter, described V.35 interface level modular converter is connected with described V.35 logic interfacing modular converter, described CPCI network interface card is realized module and is connected with described ethernet physical layer signal interconnect module, described microcontroller supervisory circuit module is connected with high-level data link modular converter with described Ethernet.
2. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 1, is characterized in that: described Ethernet and high-level data link modular converter are Application specific integrated circuit for communication.
3. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 2, is characterized in that: the external SDRAM of described Application specific integrated circuit for communication.
4. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 1, is characterized in that: described V.35 logic interfacing modular converter comprises CPLD (CPLD).
5. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 1, is characterized in that: described V.35 clock generation module comprises CPLD (CPLD).
6. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 1, is characterized in that: described V.35 interface level modular converter adopts SP319 chip.
7. a kind of Ethernet-V.35 protocol converter based on CPCI board according to claim 1, is characterized in that: described CPCI network interface card is realized module for the ethernet controller with pci bus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410285167.7A CN104092669A (en) | 2014-06-24 | 2014-06-24 | Ethernet-V.35 protocol converter based on CPCI board card |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410285167.7A CN104092669A (en) | 2014-06-24 | 2014-06-24 | Ethernet-V.35 protocol converter based on CPCI board card |
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| CN104092669A true CN104092669A (en) | 2014-10-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753958A (en) * | 2015-04-17 | 2015-07-01 | 深圳市英威腾电气股份有限公司 | Card and method for converting communication protocols |
| CN107463456A (en) * | 2017-08-04 | 2017-12-12 | 郑州云海信息技术有限公司 | A kind of system and method for lifting double netcard NCSI management system switching efficiencies |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202772914U (en) * | 2012-09-11 | 2013-03-06 | 武汉迈力特通信有限公司 | General communication interface interconnection system |
| CN203243361U (en) * | 2013-05-21 | 2013-10-16 | 中国电子科技集团公司第五十四研究所 | IEEE1394-Ethernet protocol converter |
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2014
- 2014-06-24 CN CN201410285167.7A patent/CN104092669A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202772914U (en) * | 2012-09-11 | 2013-03-06 | 武汉迈力特通信有限公司 | General communication interface interconnection system |
| CN203243361U (en) * | 2013-05-21 | 2013-10-16 | 中国电子科技集团公司第五十四研究所 | IEEE1394-Ethernet protocol converter |
Non-Patent Citations (1)
| Title |
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| 范道威: ""基于CPCI的Ethernet-V.35协议转换器设计"", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753958A (en) * | 2015-04-17 | 2015-07-01 | 深圳市英威腾电气股份有限公司 | Card and method for converting communication protocols |
| CN107463456A (en) * | 2017-08-04 | 2017-12-12 | 郑州云海信息技术有限公司 | A kind of system and method for lifting double netcard NCSI management system switching efficiencies |
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