CN212463263U

CN212463263U - Vehicle-mounted network system applied to domain controller

Info

Publication number: CN212463263U
Application number: CN202021438624.9U
Authority: CN
Inventors: 隋榕华; 林伟; 黄盖; 陈凯
Original assignee: Flaircomm Microelectronics Inc
Current assignee: Flaircomm Microelectronics Inc
Priority date: 2020-07-18
Filing date: 2020-07-18
Publication date: 2021-02-02
Anticipated expiration: 2030-07-18

Abstract

The utility model relates to an use vehicle network system on domain controller. The Ethernet switch comprises a processor module, a 5-port Ethernet switch module, 4 8-port Ethernet switch modules, 8 gigabit Ethernet PHY transceivers and Ethernet connectors, wherein the processor module is connected with 1 port of the 5-port Ethernet switch module, the other 4 ports of the 5-port Ethernet switch module are respectively connected with 1 port of the 4 8-port Ethernet switch modules, the 5 ports of the 4 8-port Ethernet switch modules are directly connected to the Ethernet connectors, and the other 2 ports of the 4 8-port Ethernet switch modules are respectively connected to the Ethernet connectors through the 8 gigabit Ethernet PHY transceivers. The utility model discloses can support 28 way ethernet at most, contain 20 way hundred mega ethernet 100BASE-T1 and 8 way gigabit ethernet 1000 BASE-T1.

Description

Vehicle-mounted network system applied to domain controller

Technical Field

The utility model relates to an automotive electronics field, concretely relates to use on-vehicle network system on domain controller.

Background

In the years, a remarkable development of automobile electronics is that the number of chips is increasing, and the number of Electronic Control Units (ECUs) is greatly increased by the aid of the applications, from a traditional engine control system, an airbag, an anti-lock system, electric power steering, an automobile body electronic stabilization system, a car lamp control system, an air conditioner, a water pump oil pump, an instrument and an entertainment audio-visual system, to a tire pressure monitoring system, a keyless entry starting system and electric seat heating regulation which are widely used at present, an auxiliary driving system, a matrix headlamp and an atmosphere lamp which are mature and unprecedented, and are popularized, as well as an electric drive control system, a battery management system and a vehicle charging system on an electric automobile, and a booming vehicle gateway, a T-BOX, an automatic driving system and the like.

The traditional electronic and electrical architectures of the automobile are distributed, all the ECUs in the automobile are connected together through CAN and LIN buses, and the number of the ECUs in the automobile is rapidly increased to dozens or even hundreds at present, so that the distributed architecture is challenged, and the distributed architecture is gradually gathered to the centralized architecture. The domain controller DCU (domain Control Unit) of the automobile has also been developed.

ADAS is the most rapidly developing application in these years, including many functions such as parking assistance, lane departure warning, night vision assistance, adaptive cruise, collision avoidance, blind spot detection, driver fatigue detection, etc., which cannot meet the demand if a distributed architecture is adopted, because the ADAS system has various sensors such as a camera, a millimeter wave radar and a laser radar, the generated data amount is large, and various functions all need the data, each sensor module can preprocess the data, and transmit the data to a domain controller through a vehicle-mounted ethernet to be processed, and the domain controller needs many ethernet interfaces to connect with different external function blocks. The existing vehicle-mounted Ethernet chip can only support 8 Ethernet interfaces at most and cannot meet the requirements of a domain controller on the Ethernet interfaces.

Disclosure of Invention

An object of the utility model is to provide an use on-vehicle network system on domain controller can support present domain controller to the more and more requirement of ethernet interface, can reach 28 ethernet interfaces at most.

In order to achieve the above purpose, the technical scheme of the utility model is that: a vehicle-mounted network system applied to a domain controller comprises a processor module, a 5-port Ethernet switching module, 4 8-port Ethernet switching modules, 8 gigabit Ethernet PHY transceivers and Ethernet connectors, wherein the processor module is connected with 1 port of the 5-port Ethernet switching module, the other 4 ports of the 5-port Ethernet switching module are respectively connected with 1 port of the 4 8-port Ethernet switching modules, the 5 ports of the 4 8-port Ethernet switching modules are directly connected to the Ethernet connectors, and the other 2 ports of the 4 8-port Ethernet switching modules are respectively connected to the Ethernet connectors through the 8 gigabit Ethernet PHY transceivers.

In an embodiment of the present invention, the processor module adopts an SOC chip, and the RGMII ethernet port and the SPI port of the SOC chip are connected to the 5-port ethernet switch module.

In an embodiment of the present invention, the SOC chip employs R-CAR M3.

In an embodiment of the present invention, the 5-port ethernet switch module employs a SJA1105P chip.

In an embodiment of the present invention, the 8-port ethernet switching module employs an 88Q5050 chip.

In an embodiment of the present invention, the gigabit ethernet PHY transceiver employs an 88Q2112 chip.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses can support 28 way ethernet at most, contain 20 way hundred mega ethernet 100BASE-T1 and 8 way gigabit ethernet 1000 BASE-T1.

Drawings

Fig. 1 is a schematic block diagram of an in-vehicle network system applied to a domain controller.

Fig. 2 is a schematic diagram of the connection of RGMII ethernet ports of the SOC chip of the present invention.

Fig. 3 is a schematic diagram of the connection between the SJA1105P chip and the SOC chip, 88Q5050 chip.

Fig. 4 is a schematic diagram of the 88Q5050 chip, the gigabit ethernet PHY chip 88Q2112, and the ethernet connector according to the present invention.

Fig. 5 is a schematic diagram of the connection between the 88Q2112 chip and the 88Q5050 chip and the ethernet connector according to the present invention.

Detailed Description

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

The utility model provides an use on-vehicle network system on domain controller, including processor module, 5 port ethernet switch module, 4 8 port ethernet switch modules, 8 gigabit ethernet PHY transceivers, ethernet connector, processor module is connected with one of them 1 port of 5 port ethernet switch modules, and 4 other ports of 5 port ethernet switch modules are connected with one of them 1 port of 4 8 port ethernet switch modules respectively, and 4 wherein 5 port lug connection of 8 port ethernet switch modules are to ethernet connector, and 2 other ports of 4 8 port ethernet switch modules are connected to ethernet connector through 8 gigabit ethernet PHY transceivers respectively.

The following are specific examples of the present invention.

As shown in fig. 1, the present invention relates to an in-vehicle network system applied to a domain controller, which comprises an SOC chip R-CAR M3, a 5-port ethernet switch chip SJA1105P, an 8-port ethernet switch chip 88Q5050, a gigabit ethernet PHY transceiver 88Q2112, and an ethernet connector.

1. SOC chip: the SOC chip used in this example was the Rensas scheme R-CAR M3 chip; the SOC internally comprises a multi-core processor and an image acceleration engine; including an RGMII Ethernet port and an SPI port; the SPI port is connected with an SJA1105P chip and used for SJA1105P boot configuration and application control; the RGMII port is connected to the SJA1105P, and is configured to receive a large amount of data transmitted by various external sensors, such as a camera, a millimeter-wave radar, and a laser radar, and perform data processing, where fig. 2 is a schematic diagram of RGMII ethernet port connection of an SOC chip.

2. SJA1105P chip: the SJA1105P chip is a NXP-derived 5-port automotive Ethernet switch, and each of the five ports may be individually configured to run at 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s. And the SJA1105P is respectively connected to the SOC/MCU chip and the four 88Q5050 chips to realize the butt joint of each path of Ethernet. Fig. 3 is a schematic diagram showing connection between the SJA1105P chip and the SOC chip, 88Q5050 chip. In fig. 3, 11 is an RGMII ethernet port to which an SJA1105P chip is connected to an SOC chip, 12 is an RGMII ethernet port to which an SJA1105P chip is connected to an 88Q5050 chip, and 13 is an SPI port to which an SJA1105P chip is connected to an SOC chip.

3. 88Q5050 chip: the 88Q5050 chip is an 8-port Ethernet switch chip from marvell corporation, supporting 5 IEEE 100BASE-T1 ports, 2 MII/RMII/RGMII ports, and 1 SGMII port. Fig. 4 shows a connection schematic diagram of an 88Q5050 chip and an 88Q5050 chip, a gigabit ethernet PHY chip 88Q2112, and an ethernet connector, and 21 shows 5 ports where the 88Q5050 chip and the ethernet connector are connected, that is, 5 ports of a hundred-gigabit ethernet 100BASE-T1 in total are used for receiving large data transmitted by various sensors, such as a camera, a millimeter wave radar, a laser radar, and the like. 24 is the 1 way RGMII interface connection SJA1105P to interface with the ethernet of other chips on the board, and RGMII interface 22 and SGMII interface 23 are respectively externally hung with gigabit ethernet PHY chip 88Q 2112.

4. 88Q2112 chip: 88Q2112 is a gigabit Ethernet PHY chip from marvell, and FIG. 5 shows a schematic diagram of connection between an 88Q2112 chip and an 88Q5050 chip, and an Ethernet connector, which are respectively connected to an RGMII interface 31 and an SGMII interface 32 of the 88Q5050, and two gigabit Ethernet 1000BASE-T1 interfaces 33 are provided for external use, for large data transmission.

The utility model discloses can support 28 way ethernet at most, contain 20 way hundred mega ethernet 100BASE-T1 and 8 way gigabit ethernet 1000 BASE-T1.

Above is the utility model discloses a preferred embodiment, all rely on the utility model discloses the change that technical scheme made, produced functional action does not surpass the utility model discloses during technical scheme's scope, all belong to the utility model discloses a protection scope.

Claims

1. The vehicle-mounted network system applied to the domain controller is characterized by comprising a processor module, a 5-port Ethernet switching module, 4 8-port Ethernet switching modules, 8 gigabit Ethernet PHY transceivers and Ethernet connectors, wherein the processor module is connected with 1 port of the 5-port Ethernet switching module, the other 4 ports of the 5-port Ethernet switching module are respectively connected with 1 port of the 4 8-port Ethernet switching modules, the 5 ports of the 4 8-port Ethernet switching modules are directly connected to the Ethernet connectors, and the other 2 ports of the 4 8-port Ethernet switching modules are respectively connected to the Ethernet connectors through the 8 gigabit Ethernet PHY transceivers.

2. The vehicular network system applied to the domain controller in claim 1, wherein the processor module is an SOC chip, and the RGMII ethernet port and the SPI port of the SOC chip are connected to the 5-port ethernet switching module.

3. The vehicular network system applied to the domain controller as claimed in claim 2, wherein the SOC chip employs R-CAR M3.

4. The vehicular network system applied to the domain controller of claim 1, wherein the 5-port ethernet switching module uses a SJA1105P chip.

5. The vehicular network system applied to the domain controller according to claim 1, wherein the 8-port ethernet switching module adopts an 88Q5050 chip.

6. The vehicular network system applied to the domain controller of claim 1, wherein the gigabit ethernet PHY transceiver employs an 88Q2112 chip.