构建面向未来的数据基础设施

January 28, 2021

Full Steam Ahead! Marvell Ethernet Device Bridge Receives Avnu Certification

By Amir Bar-Niv, VP of Marketing, Automotive Business Unit, Marvell and John Bergen, Sr. Product Marketing Manager, Automotive Business Unit, Marvell

Some one hundred-and-sixty years later, as Marvell and its competitors race to reinvent the world’s transportation networks, universal design standards are more important than ever. Recently, Marvell’s 88Q5050 Ethernet Device Bridge became the first of its type in the automotive industry to receive Avnu certification, meeting exacting new technical standards that facilitate the exchange of information between diverse in-car networks, which enable today’s data-dependent vehicles to operate smoothly, safely and reliably.

Avnu, the industry alliance focused on promoting an interoperable ecosystem based on IEEE 802.1 standards for Time Sensitive Networking (TSN), issues product certifications based on testing by approved third-party labs. In this case, the 88Q5050 was tested and approved by the University of New Hampshire InterOperability Laboratory, known as UNH-IOL.

The TSN standards defined by IEEE provide a “tool box” of specifications designed to meet the networking requirements of today’s Automotive, Industrial, and Professional A/V industries.   Designed to enable low latency, time aware networking, with guaranteed delivery of time critical data across today’s Ethernet networks, the TSN specifications encompass 17 approved standards to date, with more continuing to be developed. 

Figure 1 shows a typical automotive architecture with cameras, lidar, and radar enabled as AVB/TSN talkers, with AVB/TSN switches (such as the AVB enabled 88Q5050) used to provide guaranteed delivery of low latency, time critical sensor data to the Automotive CPUs, acting as AVB listeners, for processing.

Automotive Architecture

图 1：Automotive ArchitectureAVB TopologyFigure 2: AVB Topology

The switch also employs the highest hardware security features, designed at the root source of the switch to prevent hacks or compromises to data streamed within the vehicle – such as through an unguarded tire pressure sensor, or any other unexpected vulnerability.

This advanced switch – an end-to-end solution – employs deep packet inspection techniques and Trusted Boot functionality to deliver the industry’s most secure automotive Ethernet switch. To further enhance security, it supports both blacklisting and whitelisting addresses on all its Ethernet ports. Guaranteed to perform at or beyond its specifications, it will open up entirely new avenues to the future, and it has already secured design wins with several leading automotive OEMs.88Q5050 Block DiagramFigure 3: 88Q5050 Block Diagram

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Today, Marvell’s commitment to invest and advance the frontiers of automotive silicon, the standards we champion, and the networks they enable, just might change the future.

标签： Automotive, Automotive Ethernet, Automotive Ethernet PHY, Ethernet, ethernet device bridge, Ethernet network, Networking

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