CN215186783U

CN215186783U - Communication system between in-board MDI interface system and non-MDI interface system

Info

Publication number: CN215186783U
Application number: CN202120644628.0U
Authority: CN
Inventors: 代小权; 张正锋
Original assignee: Shenzhen Shangwotong Technology Co ltd
Current assignee: Shenzhen Shangwotong Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-12-14
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses an in-board MDI interface system and non-MDI interface system communication system, which comprises a communication system A (1), a PHY circuit unit (2), a matching circuit unit (3) and a communication system B (4); the communication system A (1) is connected with the PHY circuit unit (2), and the PHY circuit unit (2) is connected with the communication system B (4) through the matching circuit unit (3). The utility model discloses a simple circuit let well low-end communication system can with 5G wireless module between realize high-speed stable communication, saved the network transformer at MDI both ends, the PCB space and components and parts quantity that have significantly reduced to reduce equipment cost, improved equipment stability, be favorable to traditional equipment to upgrade into 5G equipment, the popularization of 5G communication application with higher speed.

Description

Communication system between in-board MDI interface system and non-MDI interface system

Technical Field

The utility model relates to a communication equipment field, concretely relates to communication system between on-board MDI interface system and non-MDI interface system.

Background

The MDI (medium Dependent interface) medium related interface is a necessary data transmission interface for communication equipment, especially for router exchange and switch, and is generally connected to the internet through a signal transmission terminal (TD + & TD-) and a signal receiving terminal (RD + & RD-), and then connected to a terminal network through a network filter and RJ-45, and usually, when two systems are connected through the MDI interface, a network filter needs to be added at each interface terminal to ensure the communication speed and stability.

In addition, with the maturity and popularization of 5G communication technology, more and more communication devices need to be upgraded to 5G functions, and then a 5G communication system needs to be connected with a conventional communication system through a certain interface, so that high-speed and stable data transmission can be performed between the two communication devices, at present, PCIE, USB3.0\3.1\3.2, and RGMII interfaces are generally available on the 5G communication system, but some processors for middle and low end communication systems are generally only high-speed MDI interfaces, which do not have the interfaces, or the interfaces which have the interfaces but actually have communication speeds of the interfaces reaching 1000Mbps, so that another communication mode needs to be found to meet the high-speed communication requirement between the two communication devices.

Disclosure of Invention

The utility model aims to solve the technical problem that an inboard MDI interface system and non-MDI interface intersystem communication system is provided, can let the communication system who does not have MDI communication interface communication system and have MDI communication interface through this kind of mode can carry out up to 1000Mbps and above data communication in same piece PCB inboard, saved the network transformer at MDI both ends simultaneously, reduce PCB space and components and parts quantity.

The utility model discloses communication system between inboard MDI interface system and non-MDI interface system is realized through following technical scheme: the circuit comprises a communication system A, PHY circuit unit, a matching circuit unit and a communication system B;

the communication system A is connected with the PHY circuit unit, and the PHY circuit unit is connected with the communication system B through the matching circuit unit.

As a preferred technical solution, the communication system a is provided with a high-speed data interface, and the communication system a is connected with the PHY circuit unit through the high-speed data interface.

As a preferred technical scheme, an MDI interface is arranged on the PHY circuit unit, and a high-speed data interface signal of the communication system a is converted into an MDI interface signal by the PHY circuit unit; the communication system B is also provided with an MDI interface, and the MDI interface of the PHY circuit unit is connected with the MDI interface of the communication system B through the matching circuit unit.

As a preferred technical scheme, the MDI interface of the communication system B and the MDI interface of the PHY circuit unit are both disposed in the PCB, and the routing between the two has a routing rule, and the routing distance length does not exceed 12 cm.

As a preferred technical scheme, the routing rule is that the line distance of the same group of differential lines is equal to the line width of the two lines, and the distance between the two groups of differential signal lines is 30 mil.

The utility model has the advantages that: the utility model discloses a simple circuit let well low-end communication system can with 5G wireless module between realize high-speed stable communication, saved the network transformer at MDI both ends, the PCB space and components and parts quantity that have significantly reduced to reduce equipment cost, improved equipment stability, be favorable to traditional equipment to upgrade into 5G equipment, the popularization of 5G communication application with higher speed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the communication method of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, the communication system between the in-board MDI interface system and the non-MDI interface system of the present invention includes a communication system a1, a PHY circuit unit 2, a matching circuit unit 3, and a communication system B4;

the communication system A1 is connected to the PHY circuit unit 2, and the PHY circuit unit 2 is connected to the communication system B4 via the matching circuit unit 3.

In this embodiment, the communication system A1 is provided with a high-speed data interface, and the communication system A1 is connected to the PHY circuit unit 2 through the high-speed data interface.

In this embodiment, the PHY circuit unit 2 is provided with an MDI interface, and the PHY circuit unit 2 converts a high-speed data interface signal of the communication system A1 into an MDI interface signal; the communication system B4 is also provided with an MDI interface, and the MDI interface of the PHY circuit unit 2 is connected to the MDI interface of the communication system B4 through the matching circuit unit 3.

In this embodiment, the MDI interface of the communication system B4 and the MDI interface of the PHY circuit unit 2 are both disposed in the PCB, and the routing between the two has a routing rule, and the routing distance is 1.12cm, so that the four pairs of differential signal lines are as close as possible, and the noise influence is cancelled.

In this embodiment, the routing rule is that the line width of the same set of differential lines is equal to the line width of the two lines, and the distance between the two sets of differential signal lines is 30 mils.

In this embodiment, the communication system A1 is RG500Q of shanghai shimeji communication technologies, inc, the PHY circuit unit 2 is composed of a high-pass PHY chip AR8035-AL1A-R, a 25M crystal matched with the same, and other resistance-capacitance materials, and the communication system B4 is mainly composed of an MCU signal MT7621A of MTK company and matched devices thereof; and debugging matching circuit parameters according to the MDI interface electrical specification of the AR8035-AL1A-R chip, the MDI interface electrical specification of the MT7621A chip and the actual PCB impedance characteristic, and ensuring the level matching of the two MDI interfaces so as to ensure high-speed and stable communication between the two MDI.

The working principle is as follows:

by converting the non-MDI interface into the MDI interface and by strict routing control and matching debugging, the stable high-speed communication between the two MDI interfaces can be ensured under the condition of not increasing a special network filter, thereby realizing the stable high-speed communication between the non-MDI interface and the MDI interface.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A communication system between an in-board MDI interface system and a non-MDI interface system is characterized in that: the system comprises a communication system A (1), a PHY circuit unit (2), a matching circuit unit (3) and a communication system B (4);

the communication system A (1) is connected with the PHY circuit unit (2), and the PHY circuit unit (2) is connected with the communication system B (4) through the matching circuit unit (3).

2. The system of claim 1, wherein the system is configured to communicate between an on-board MDI interface system and a non-MDI interface system: the communication system A (1) is provided with a high-speed data interface, and the communication system A (1) is connected with the PHY circuit unit (2) through the high-speed data interface.

3. The system of claim 1, wherein the system is configured to communicate between an on-board MDI interface system and a non-MDI interface system: an MDI interface is arranged on the PHY circuit unit (2), and the high-speed data interface signals of the communication system A (1) are converted into MDI interface signals through the PHY circuit unit (2); and the communication system B (4) is also provided with an MDI (diphenylmethane diisocyanate) interface, and the MDI interface of the PHY circuit unit (2) is connected with the MDI interface of the communication system B (4) through the matching circuit unit (3).

4. The system of claim 1, wherein the system is configured to communicate between an on-board MDI interface system and a non-MDI interface system: the MDI interface of the communication system B (4) and the MDI interface of the PHY circuit unit (2) are both arranged in the PCB, and the routing between the MDI interface and the PHY circuit unit has routing rules, and the routing distance length is not more than 12 cm.

5. The system of claim 4, wherein the system is configured to communicate between an on-board MDI interface system and a non-MDI interface system: the routing rule is that the line distance of the same group of differential lines is equal to the line width of the two lines, and the distance between the two groups of differential signal lines is 30 mil.