With the increasing demand for intelligent, networked, comfortable and autonomous driving of automobiles, it has promoted the continuous progress of a series of technologies such as ADAS, high-quality audio and video, OTA remote upgrades, and cloud services. . The editor will show you the dominance of the super gateway. At present, the number of nodes with Ethernet interfaces on the whole vehicle is also gradually increasing, such as driving recorder, vehicle multimedia, 360 surround view system, anti-fatigue driving system, front view camera and so on. Some third-party organizations predict that by 2020, the number of Ethernet ports deployed in cars will reach 200 million, and data interaction and node upgrades between various Ethernet nodes will need to rely on Ethernet gateways. So, are you ready for a suitable gateway solution with sufficient scalability? 1. Gateway solution ZLG provides a complete vehicle Ethernet gateway solution. The gateway adds an Ethernet gateway to the traditional CAN gateway, and realizes a real data interaction hub in the car. The solution can realize 7-channel Ethernet, 8-channel CAN and more LIN resources, and uses VR5500 designed specifically for the gateway as a power solution, greatly improving the functional safety of the solution. Figure 1 Block diagram of Ethernet gateway The program features and advantages are as follows: The main control conforms to ASIL-B level and is rich in resources, which belongs to the special model of gateway; Vehicle-grade EMMC, multiple models in series to meet the needs of different applications; Professional PMIC series power supply, various power supply diagnostic functions to meet functional safety requirements; Ethernet Swith selects SJA1105, 5 independent ports, which can be cascaded flexibly; Ethernet PHY, support single / dual channel flexible matching; The dual high-speed CAN transceiver TJA1048 further reduces the PCB area. 2. ZLG helps your product development The gateway solution in this article will integrate the T-Box function on the basis of the gateway, and will eventually provide customers with complete hardware design reference for the super gateway and complete low-level development support. At the same time, we have prepared Ethernet peripheral auxiliary tools for you. 1. SJA1105 evaluation board The SJA1105 evaluation board is a 5-port switch designed based on the SJA1105P vehicle Ethernet chip. It includes a 100Mbps RJ45 interface and four 100Mbps on-board Ethernet interfaces. SJA1105 Demo uses the current NXP mainstream Ethernet ICs (including SJA1105, TJA1100, TJA1101, TJA1102), and only need a set of boards to understand the reference design of these Ethernet ICs. Figure 2 SJA1105 evaluation board physical map 2. TJA1101 transparent transmission debugging tool TJA1100 DEMO is a tool for mutual conversion between in-vehicle Ethernet and industrial Ethernet. Using KSZ8041NL and TJA1100 for back-to-back design, the conversion of 100BASE-T1 and 100BASE-TX is realized, which is convenient for engineers to debug the vehicle-mounted Ethernet directly with the computer when carrying out the vehicle-mounted Ethernet debugging. Figure 3 TJA1100 DEMO physical map 3. Summary With the continuous development of in-vehicle Ethernet technology, there are various solutions for in-vehicle Ethernet gateways on the market. How to choose the right one among many solutions? Need to consider the cost of the program, the feasibility of the program, support, and supply cycle guarantee. Our solution provides the best price-performance ratio. NXP provides a 15-year supply cycle guarantee. Zhou Ligong brings together 400+ R & D engineers. The strong technical support team can make your products go to market faster! An oscilloscope is an essential measurement instrument for engineers. A good oscilloscope can help engineers analyze the problem in the shortest time. ZDS4000 series data mining oscilloscopes make the problem solved. Click on the bottom to read the original text for detailed product parameters.
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