CN202818349U - MOST network and Ethernet gateway - Google Patents
MOST network and Ethernet gateway Download PDFInfo
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- CN202818349U CN202818349U CN 201220523683 CN201220523683U CN202818349U CN 202818349 U CN202818349 U CN 202818349U CN 201220523683 CN201220523683 CN 201220523683 CN 201220523683 U CN201220523683 U CN 201220523683U CN 202818349 U CN202818349 U CN 202818349U
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Abstract
The utility model discloses an MOST network and Ethernet gateway, aiming to solve the problem that currently, information exchange cannot be performed between an MOST network and the Ethernet. The MOST network and Ethernet gateway comprises a master control module, a MOST network frame transceiving module, an Ethernet frame transceiving module, a MOST network interface, and an Ethernet interface. The master control module is connected with the MOST network frame transceiving module through an I2C bus interface. The master control module is connected with the Ethernet frame transceiving module through a data bus interface. A data transmitting pin Tx and a data receiving pin Rx which are arranged on the MOST network frame transceiving module are connected with a data transmitting pin Tx and a data receiving pin Rx which are arranged on the MOST network interface through electric wires. A data transmitting pin Tx and a data receiving pin Rx which are arranged on the Ethernet frame transceiving module are connected with a data transmitting pin Tx and a data receiving pin Rx which are arranged on the Ethernet interface through electric wires.
Description
Technical field
The utility model relates to a kind of automobile automatic control technology equipment, particularly relates to a kind of MOST(MediaOriented Systems Transport) network and Ethernet (Ethernet) gateway.
Background technology
In automotive electronic industry flourish today, various automobile bus are presented in face of the people.The MOST network is the vehicle-mounted bus towards Multimedia Data Transmission, and now extensively model is applied in the middle of the high-end vehicle of the automobile vendors such as Audi, BMW.It can transmit the asynchronous bag data such as the video data of voice data, high definition of high-fidelity and navigation, is first choice of the vehicle-mounted multimedia information entertainment system.Ethernet (Ethernet) refers to by Xerox company and creates and by the baseband LAN standard that Xerox, Intel and DEC develop jointly, be to have now the most general communication protocol standard that local area network (LAN) adopts now.Ethernet uses CSMA/CD(csma and collision detection) technology, comprise the Ethernet (10Mbit/s), Fast Ethernet (100Mbit/s) of standard and 10G(10Gbit/s) Ethernet.
Resource in the Internet is very abundant, and various audio/video multimedia data are complete, and the data link layer normal operation of the Internet is the Ethernet agreement.But now Ethernet can't be applied on the automobile, and in the automobile strong point that to propagate these audio/video multimedia data are MOST networks.So one can receive Ethernet audio/video multimedia data, and these data can be sent to the MOST network and the Ethernet gateway that need on its MOST network node and just become highly significant.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome the problem that MOST network and Ethernet can not be communicated by letter, and a kind of MOST network and Ethernet gateway be provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described a kind of MOST network and Ethernet gateway comprise main control module, MOST network frame transceiver module, Ethernet frame transceiver module, MOST network interface and Ethernet interface.
Pass through I between main control module and the MOST network frame transceiver module
2The C bus interface connects, be connected by data bus interface between main control module and the Ethernet frame transceiver module, MOST network frame transceiver module is connected data transmission pin Tx and is connected with data receiver pin Rx with the MOST network interface, Ethernet frame transceiver module sends pin Tx with the Ethernet interface by data and is connected with data receiver pin Rx.
Pass through I between main control module described in the technical scheme and the MOST network frame transceiver module
2The connection of C bus interface refers to: described main control module comprises that model is the microcontroller of S3C6410.Described MOST network frame transceiver module comprises that model is the MOST intelligent network interface controller of OS81092.Model is that the A20 pin, G14 pin on the microcontroller of S3C6410 is connected that SCL pin, SDA pin electric wire on the MOST intelligent network interface controller of OS81092 connects with model successively, consists of I
2The C bus interface.Model is that B17 pin and the model on the microcontroller of S3C6410 is that INT pin electric wire on the MOST intelligent network interface controller of OS81092 is connected.
Be connected by data bus interface between main control module described in the technical scheme and the Ethernet frame transceiver module and refer to: described main control module comprises that model is the microcontroller of S3C6410.Described Ethernet frame transceiver module comprises that model is the Ethernet mac controller of DM9000AEP.Model is that data/address bus LDATA0 pin to the LDATA15 pin on the microcontroller of S3C6410 is connected that SD0 pin to SD15 pin electric wire on the Ethernet mac controller of DM9000AEP connects with model successively; Model is that external interrupt interface EINT7 pin and the model on the microcontroller of S3C6410 is that INT pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that to select nCS1 pin and model be that CS# pin electric wire on the Ethernet mac controller of DM9000AEP is connected to the sheet on the microcontroller of S3C6410; Model is that reset nRSTOUT pin and the model on the microcontroller of S3C6410 is that PWRST# pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that reading on the microcontroller of S3C6410 enables the LnOE pin and write the IOR# pin that enables on the Ethernet mac controller that LnWE pin and model are DM9000AEP and be connected with IOW# pin electric wire; Model is that address wire LADDR2 pin and the model on the microcontroller of S3C6410 is connected that CMD pin electric wire on the Ethernet mac controller of DM9000AEP connects.
MOST network frame transceiver module described in the technical scheme is connected data and sends pin Tx and be connected with data receiver pin Rx and refer to the MOST network interface: described MOST network frame transceiver module comprises that model is the MOST intelligent network interface controller of OS81092.Described MOST network interface comprises that model is the signal converter of TG100-MOST15N2LF.Model is that the ETXP pin, ETXN pin on the MOST intelligent network interface controller of OS81092 is connected that TXP pin, the TXN pin electric wire of the signal converter on the TG100-MOST15N2LF connects with model successively, carries out the difference output Tx of signal; Model is that ERXP pin, ERXN pin and the model on the MOST intelligent network interface controller of OS81092 is connected that RXP pin, RXN pin electric wire on the signal converter of TG100-MOST15N2LF connects, and carries out the difference input Rx of signal.
Ethernet frame transceiver module described in the technical scheme and Ethernet interface send pin Tx by data and is connected with data receiver pin Rx and refers to: described Ethernet frame transceiver module comprises that model is the Ethernet mac controller of DM9000AEP.Described Ethernet interface comprises that model is the signal converter of HR911105A.Model is that the TX+ pin, TX-pin on the Ethernet mac controller of DM9000AEP is that TD+ pin, TD-pin on the signal converter of HR911105A links together with model successively, carries out the difference output Tx of signal; Model is that the RX+ pin, RX-pin on the Ethernet mac controller of DM9000AEP is connected that RD+ pin, RD-pin electric wire on the signal converter of HR911105A connects with model successively, carries out the difference input Rx of signal.
Compared with prior art the beneficial effects of the utility model are:
1. a kind of MOST network described in the utility model can make two kinds of networks carry out unobstructed believable communication with the Ethernet gateway.Thereby solved the how mutually problem of exchange of information of two kinds of networks.
2. a kind of MOST network described in the utility model can make MOST network node and Ethernet node intercom mutually with the Ethernet gateway, lays the foundation for the audio/video multimedia resource on the Internet is introduced the MOST network.And improved car load comfortableness, functional and with the interoperability of extraneous data.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is that a kind of MOST network described in the utility model and Ethernet gateway structure form schematic block diagram;
Fig. 2 is the structural representation of the main control module that adopts in a kind of MOST network described in the utility model and the Ethernet gateway;
Fig. 3 is that the MOST network frame transceiver module that adopts in a kind of MOST network described in the utility model and the Ethernet gateway is that model is the structural representation of the MOST intelligent network interface controller of OS81092 and (right side part) interlock circuit that makes its normal operation;
Fig. 4 is that the MOST network frame transceiver module that adopts in a kind of MOST network described in the utility model and the Ethernet gateway is that model is the structural representation of the MOST intelligent network interface controller of OS81092 and (left part) interlock circuit that makes its normal operation;
Fig. 5 is the structural representation of the Ethernet frame transceiver module that adopts in a kind of MOST network described in the utility model and the Ethernet gateway;
Fig. 6 is that the MOST intelligent network interface controller that the MOST network signal that adopts in a kind of MOST network described in the utility model and the Ethernet gateway and model are OS81092 can receive/electrical schematic diagram of transmitted signal change-over circuit;
Fig. 7 is that the Ethernet mac controller that the Ethernet signal that adopts in a kind of MOST network described in the utility model and the Ethernet gateway and model are DM9000AEP can receive/electrical schematic diagram of transmitted signal change-over circuit;
Fig. 8 is that model is the I between the microcontroller of S3C6410 and MOST intelligent network interface controller that model is OS81092
2The electrical schematic diagram of C interface circuit;
Fig. 9 is that model is the electrical schematic diagram of the connecting circuit between the MOST intelligent network interface controller of OS81092 and signal converter that model is TG100-MOST15N2LF;
Figure 10 is that model is the electrical schematic diagram of the data bus interface circuit between the microcontroller of S3C6410 and Ethernet mac controller that model is DM9000AEP;
Figure 11 is that model is the electrical schematic diagram of the connecting circuit between the Ethernet mac controller of DM9000AEP and signal converter that model is HR911105A;
Among the figure: M-R1 to M-R46. resistance, M-R103 to M-R111. resistance, M-R371. resistance, M-R381. resistance, M-C1 to M-C16. electric capacity, M-C23. electric capacity, M-C24. electric capacity, M-C30 to M-C33. electric capacity, M-C95. electric capacity, M-C96. electric capacity, M-Y1. crystal oscillator, M-Y2. crystal oscillator, Y5. crystal oscillator, M-L6. inductance, M-L7. inductance, M-L10. inductance, M-L11. inductance, M-D5. diode, M-D6. diode, R22. resistance, R56. resistance, R75 to R80. resistance, C72 to C75. electric capacity, C110 to C113. electric capacity, C119. electric capacity, C145. electric capacity, C148. electric capacity, C149. electric capacity.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
Consult Fig. 1, a kind of MOST network and Ethernet gateway that the utility model provides mainly are made of following five parts: main control module, MOST network frame transceiver module, Ethernet frame transceiver module, MOST network interface and Ethernet interface.Pass through I between main control module and the MOST network frame transceiver module
2The C bus interface connects, and namely passes through I between main control module and the MOST network frame transceiver module
2The C bus interface is carried out transfer of data.Be connected by data bus interface between main control module and the Ethernet frame transceiver module, namely carry out transfer of data by data bus interface between main control module and the Ethernet frame transceiver module.MOST network frame transceiver module is provided with the data that are connected with the MOST network interface and sends pin Tx and data receiver pin Rx, MOST network frame transceiver module sends pin Tx with the MOST network interface by data and is connected with data receiver pin Rx, namely carries out transfer of data by data transmission pin Tx and data receiver pin Rx between the two.Ethernet frame transceiver module is provided with the data that are connected with the Ethernet interface and sends pin Tx and data receiver pin Rx, Ethernet frame transceiver module sends pin Tx with the Ethernet interface by data and is connected with data receiver pin Rx, namely carries out transfer of data by data transmission pin Tx and data receiver pin Rx between the two.
Consult Fig. 2, described main control module comprises that model is the microcontroller of S3C6410 and the interlock circuit that makes its normal operation.
Consult Fig. 3 and Fig. 4, described MOST network frame transceiver module comprises that model is the MOST intelligent network interface controller of OS81092 and the interlock circuit that makes its normal operation.
Consult Fig. 5, described Ethernet frame transceiver module comprises that model is the Ethernet mac controller of DM9000AEP and the interlock circuit that makes its normal operation.
Consult Fig. 6, described MOST network interface comprises that the connector that can be directly connected on the automobile with MOST network and the signal converter take model as the TG100-MOST15N2LF MOST intelligent network interface controller as the MOST network signal of core and model as OS81092 can receive/the transmitted signal change-over circuit, the signal that wherein transmits on MR+ pin and the MR-pin is MOST network differential input signal, the signal that transmits on MT+ pin and the MT-pin is MOST network differential output signal, the signal that transmits on RXP pin and the RXN pin is that model is the receivable differential input signal of MOST intelligent network interface controller of OS81092, and the signal that transmits on TXP pin and the TXN pin is that model is the differential output signal that the MOST intelligent network interface controller of OS81092 can send.
Consult Fig. 7, described Ethernet interface comprises that RJ45 connector and signal converter take model as the HR911105A Ethernet mac controller as the Ethernet signal of core and model as DM9000AEP can receive/the transmitted signal change-over circuit, wherein TD+ and TD-are that model is the output pin that the Ethernet mac controller of DM9000AEP can send differential output signal, RD+ and RD-are that model is the input pin that the Ethernet mac controller of DM9000AEP can receive differential input signal, LEDG+ and LEDG-are the output of Ethernet differential output signal, and LEDY+ and LEDY-are the input of Ethernet differential input signal.
In main control module, because data will be the microcontroller of S3C6410 by model all, so to the having relatively high expectations of microcontroller, therefore having selected model is the microcontroller of S3C6410.Model is that the microcontroller of S3C6410 is the microcontroller of ARM11 architectural framework, and its calculation function is powerful.Model is most of function that the microcontroller of S3C6410 has carried this gateway, such as reception and the route that sends buffering, data and the flow control etc. of data.
Consult Fig. 8, model is that the A20 pin, G14 pin on the microcontroller of S3C6410 is connected that SCL pin, SDA pin electric wire on the MOST intelligent network interface controller of OS81092 connects with model successively, consists of I
2The C bus interface.Be that INT pin electric wire on the MOST intelligent network interface controller of OS81092 is connected and model is B17 pin and model on the microcontroller of S3C6410, model is that the microcontroller of S3C6410 can be that the MOST intelligent network interface controller of OS81092 resets and inquires about operating state to model like this.
MOST network frame transceiver module is by MOST network interface and MOST network connection, and transceiving data from the MOST network carries out embedded MOST network management, the setting of network protection pattern, the setting of hardware adaptations WatchDog Timer and intelligent device management.It is the network controller for the MOST50 network standard.
Consult Fig. 9, model is that the ETXP pin, ETXN pin on the MOST intelligent network interface controller of OS81092 is connected that TXP pin, the TXN pin electric wire of the signal converter on the TG100-MOST15N2LF connects with model successively, carries out the difference output Tx of signal.Model is that ERXP pin, ERXN pin and the model on the MOST intelligent network interface controller of OS81092 is connected that RXP pin, RXN pin electric wire on the signal converter of TG100-MOST15N2LF connects, and carries out the difference input Rx of signal.
The MOST network interface selects connector and the MOST network of deferring to the MOST50 network standard to carry out physical connection, and the MOST network of deferring to the MOST50 network standard uses twisted-pair feeder or coaxial cable to carry out the signal transmission.
Consult Figure 10, model is to be that circuit connects between the microcontroller of S3C6410 and the Ethernet mac controller that model is DM9000AEP.Model is that data/address bus LDATA0 pin to the LDATA15 pin on the microcontroller of S3C6410 is connected that SD0 pin to SD15 pin electric wire on the Ethernet mac controller of DM9000AEP connects with model successively; Model is that external interrupt interface EINT7 pin and the model on the microcontroller of S3C6410 is that INT pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that to select nCS1 pin and model be that CS# pin electric wire on the Ethernet mac controller of DM9000AEP is connected to the sheet on the microcontroller of S3C6410; Model is that reset nRSTOUT pin and the model on the microcontroller of S3C6410 is that PWRST# pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that reading on the microcontroller of S3C6410 enables the LnOE pin and write the IOR# pin that enables on the Ethernet mac controller that LnWE pin and model are DM9000AEP and be connected with IOW# pin electric wire; Model is that address wire LADDR2 pin and the model on the microcontroller of S3C6410 is connected that CMD pin electric wire on the Ethernet mac controller of DM9000AEP connects.
Ethernet frame transceiver module is connected with Ethernet by the Ethernet interface, model is that the Ethernet mac controller of DM9000AEP is as the transceiver controller of Ethernet frame, the send and receive that is used for management ethernet network frame, and be that the SRAM of the microcontroller inside of S3C6410 transmits data by data/address bus and model.
Consult Figure 11, model is that the TX+ pin, TX-pin on the Ethernet mac controller of DM9000AEP is that TD+ pin, TD-pin on the signal converter of HR911105A links together with model successively, carries out the difference output (Tx) of signal.Model is that the RX+ pin, RX-pin on the Ethernet mac controller of DM9000AEP is connected that RD+ pin, RD-pin electric wire on the signal converter of HR911105A connects with model successively, carries out the difference input (Rx) of signal.
The Ethernet interface is selected the RJ45 connector directly and Ethernet carries out physical connection, and Ethernet carries out transfer of data by twisted-pair feeder.
Software aspect, model are that operation has (SuSE) Linux OS through cutting on the microcontroller of S3C6410.Operation MOST network server receives and sends the MOST frame on operating system, and the MOST network is managed accordingly.Also to move the relative program of ICP/IP protocol stack on this external operating system, finish top service, flow control and error control that ethernet frame carries.
The operation principle of a kind of MOST network and Ethernet gateway:
The course of work of this gateway is described for an Ethernet node transmission information as example take a MOST network node.
This MOST network node sends to gateway node by asynchronous channel with the MOST data packet from Ethernet, gateway node is put into buffering area with this packet, find this packet should issue which Ethernet node according to the routing iinformation in the routing table, then this packet is added corresponding Ethernet frame head and postamble, by the Ethernet transceiver part Ethernet frame is sent to corresponding Ethernet node at last.
Claims (5)
1. a MOST network and Ethernet gateway is characterized in that described a kind of MOST network and Ethernet gateway comprise main control module, MOST network frame transceiver module, Ethernet frame transceiver module, MOST network interface and Ethernet interface;
Pass through I between main control module and the MOST network frame transceiver module
2The C bus interface connects, be connected by data bus interface between main control module and the Ethernet frame transceiver module, MOST network frame transceiver module is connected data transmission pin Tx and is connected with data receiver pin Rx with the MOST network interface, Ethernet frame transceiver module sends pin Tx with the Ethernet interface by data and is connected with data receiver pin Rx.
2. according to a kind of MOST network claimed in claim 1 and Ethernet gateway, it is characterized in that, pass through I between described main control module and the MOST network frame transceiver module
2The connection of C bus interface refers to:
Described main control module comprises that model is the microcontroller of S3C6410;
Described MOST network frame transceiver module comprises that model is the MOST intelligent network interface controller of OS81092;
Model is that the A20 pin, G14 pin on the microcontroller of S3C6410 is connected that SCL pin, SDA pin electric wire on the MOST intelligent network interface controller of OS81092 connects with model successively, consists of I
2The C bus interface; Model is that B17 pin and the model on the microcontroller of S3C6410 is that INT pin electric wire on the MOST intelligent network interface controller of OS81092 is connected.
3. according to a kind of MOST network claimed in claim 1 and Ethernet gateway, it is characterized in that, be connected by data bus interface between described main control module and the Ethernet frame transceiver module and refer to:
Described main control module comprises that model is the microcontroller of S3C6410;
Described Ethernet frame transceiver module comprises that model is the Ethernet mac controller of DM9000AEP;
Model is that data/address bus LDATA0 pin to the LDATA15 pin on the microcontroller of S3C6410 is connected that SD0 pin to SD15 pin electric wire on the Ethernet mac controller of DM9000AEP connects with model successively; Model is that external interrupt interface EINT7 pin and the model on the microcontroller of S3C6410 is that INT pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that to select nCS1 pin and model be that CS# pin electric wire on the Ethernet mac controller of DM9000AEP is connected to the sheet on the microcontroller of S3C6410; Model is that reset nRSTOUT pin and the model on the microcontroller of S3C6410 is that PWRST# pin electric wire on the Ethernet mac controller of DM9000AEP is connected; Model is that reading on the microcontroller of S3C6410 enables the LnOE pin and write the IOR# pin that enables on the Ethernet mac controller that LnWE pin and model are DM9000AEP and be connected with IOW# pin electric wire; Model is that address wire LADDR2 pin and the model on the microcontroller of S3C6410 is connected that CMD pin electric wire on the Ethernet mac controller of DM9000AEP connects.
4. according to a kind of MOST network claimed in claim 1 and Ethernet gateway, it is characterized in that described MOST network frame transceiver module is connected data and sends pin Tx and be connected with data receiver pin Rx and refer to the MOST network interface:
Described MOST network frame transceiver module comprises that model is the MOST intelligent network interface controller of OS81092;
Described MOST network interface comprises that model is the signal converter of TG100-MOST15N2LF;
Model is that the ETXP pin, ETXN pin on the MOST intelligent network interface controller of OS81092 is connected that TXP pin, the TXN pin electric wire of the signal converter on the TG100-MOST15N2LF connects with model successively, carries out the difference output Tx of signal; Model is that ERXP pin, ERXN pin and the model on the MOST intelligent network interface controller of OS81092 is connected that RXP pin, RXN pin electric wire on the signal converter of TG100-MOST15N2LF connects, and carries out the difference input Rx of signal.
5. according to a kind of MOST network claimed in claim 1 and Ethernet gateway, it is characterized in that described Ethernet frame transceiver module and Ethernet interface send pin Tx by data and is connected with data receiver pin Rx and refers to:
Described Ethernet frame transceiver module comprises that model is the Ethernet mac controller of DM9000AEP;
Described Ethernet interface comprises that model is the signal converter of HR911105A;
Model is that the TX+ pin, TX-pin on the Ethernet mac controller of DM9000AEP is that TD+ pin, TD-pin on the signal converter of HR911105A links together with model successively, carries out the difference output Tx of signal; Model is that the RX+ pin, RX-pin on the Ethernet mac controller of DM9000AEP is connected that RD+ pin, RD-pin electric wire on the signal converter of HR911105A connects with model successively, carries out the difference input Rx of signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523683 CN202818349U (en) | 2012-10-14 | 2012-10-14 | MOST network and Ethernet gateway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523683 CN202818349U (en) | 2012-10-14 | 2012-10-14 | MOST network and Ethernet gateway |
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| CN202818349U true CN202818349U (en) | 2013-03-20 |
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| CN 201220523683 Expired - Fee Related CN202818349U (en) | 2012-10-14 | 2012-10-14 | MOST network and Ethernet gateway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634896A (en) * | 2016-01-28 | 2016-06-01 | 叶少甘 | Single-host polycyclic MOST network communication system |
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2012
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634896A (en) * | 2016-01-28 | 2016-06-01 | 叶少甘 | Single-host polycyclic MOST network communication system |
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Granted publication date: 20130320 Termination date: 20131014 |