Electronic enthusiasts : It is expected that the overall market of automotive semiconductors will have a scale of US $ 39 billion by 2018. At the time of rapid development of automotive electronics, in-vehicle networks (IVN) have also become the focus of attention. For the vehicle network, CAN, LIN, LVDS, FLexaRay or MOST technology are preferred. When there is a lot of disagreement, Broadcom has another way to choose Ethernet technology. There are many network technologies, and there is no doubt that the most mature technology is Ethernet. Compared with other network technologies, it has great flexibility, and can accept a variety of cables, without much change in application, making the design simpler; another big advantage is that it can ensure that each port needs Bandwidth. But why hasn't Ethernet technology been used in the automotive industry before? It's very simple, because it can't meet the requirements of the car's harsh EMC and operating environment temperature. The emergence of Broadcom automotive Ethernet chips broke this limitation. In an exclusive interview with the editorial department of Electronic Audiophile.com, TImothy Lau, deputy director of Broadcom's in-vehicle network products, said: "To achieve the transition from OBD applications to in-vehicle networks, current Ethernet solutions must meet strict industry requirements, such as electromagnetic compatibility (EMC), heat resistance and time-to-failure (FIT) rate. At the same time, suppliers must ensure that an open vehicle architecture with system compatibility is provided. "For this reason, TImothy Lau emphasized that Broadcom ’s BroadR-Reach Ethernet technology can Break the traditional shackles to meet the various needs of future cars. In addition, at the site of a car networking seminar, Shen Hong, director of Broadcom ’s China business development, also said: “Broadcom ’s in-vehicle Ethernet is a new generation of in-vehicle high-speed bus solutions that can provide bandwidth and use unshielded twisted pair design Replacing traditional line proprietary systems with wire Ethernet can reduce the cost of wiring in the car while reducing the weight. Under the premise that gasoline prices are high today, the weight reduction means that the fuel consumption is reduced. It meets the standard, and Meets automotive electromagnetic compatibility requirements. This solution is based on an open and extensible architecture, and can be compatible with multiple in-vehicle network systems, including vehicle diagnostics and even some applications such as low bandwidth requirements and low cost. . " More exciting recommendations related to Broadcom Ethernet Broadcom opens up another path, BroadR-Reach Ethernet breaks the shackles In fact, with the advent of the era of intelligent interconnection, the future performance of automotive networking will become an important selection criterion for consumers to purchase cars. TImothy Lau said that in response to this development trend, Broadcom ’s comprehensive wired and wireless in-vehicle devices provide a scalable connection backbone architecture to drive higher bandwidth, intelligent applications, infotainment systems, and advanced driving safety features. Use Ethernet to provide vehicle connection, BroadR-Reach Ethernet is unstoppable Compared with the scrambler used by 100BASE-TX, the onboard Ethernet digital signal processor (DSP) uses a highly optimized scrambler, which can better separate the signals and provide a powerful and efficient signal for automotive applications. Make the solution more efficient than the 100BASE-TX system. Wireless communication dynamics: Broadcom opens the era of in-vehicle Ethernet In order to meet the above-mentioned automotive market demand for in-vehicle networks, Broadcom has developed patented technology BroadR-Reach based on standard Ethernet technology, which is adopted in the entire series of in-vehicle Ethernet products released this time. It can achieve high-performance 100Mbps Ethernet interconnection, using a single pair of unshielded twisted pair for transmission. The upper MAC end uses a standard Ethernet interface, and the PHY layer is innovatively optimized for in-vehicle applications. In addition to using a single unshielded twisted pair transmission, the speed of the standard Ethernet is reduced to about 50Mbps, which can meet automotive Application requirements for EMC.
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TIMothy Lau, Deputy Director of Tubotong Automotive Network Products