TechXchange: Automotive Ethernet

Software-defined vehicles (SDVs) are built around real-time networking.
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March 3, 2026
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What You’ll Learn

  • What is automotive Ethernet 
  • How does automotive Ethernet relate to conventional Ethernet
  • How does automotive Ethernet support software defined vehicles (SDV)
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Real-time networking is the basis for software-defined vehicles (SDVs). This TechXchange collects together articles that address the technologies involved, such as single-pair Ethernet (SPE) and time-sensitive networking (TSN). It also address things like zonal architectures used by SDV solutions.

Table of Contents

Automotive Ethernet Basics

These articles introduce automotive Ethernet fundamentals. They explain the transition from CAN/LIN/FlexRay to single-pair Ethernet, outlining bandwidth advantages, scalability, and the system-level challenges that accompany growing ADAS and infotainment demands.

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Despite rapid adoption across modern vehicle platforms, myth busting is still required when highlighting the benefits of twisted-pair automotive Ethernet.
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The OPEN (One-Pair Ether-Net) Alliance delivers 10/100 Mbit/s Ethernet over a single, unshielded twisted pair cable. Power is optional.
What is Ethernet and why is it so much better than current networks? How will it affect network architecture and what will the impact be on the automotive industry?
Automotive Ethernet is here to stay, but there are hurdles to overcome in using it. However, one option has arrived that may offer a bandwidth solution to today’s in-car connectivity...
The role of BCMs in automotive design continues to expand to handle the increase in features and networking bandwidth requirements. Here’s a look at the architectures and interfaces...
Now having pushed past its half-century anniversary, the seemingly countless forms of Ethernet, from SPE to PoE, have become an integral part of communications systems across ...

Safe and Secure Automotive Networking

Security and safety are key requirements for automotive networks. This includes reliable communications as well as certifiable hardware.

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As vehicles become more advanced, the need for increased security becomes a critical issue that MACsec looks to mitigate.
Marvell’s secure eight-port, Gigabit Ethernet switch features four built-in 100Base-T1 ports.
Automotive Ethernet employs a unique interface that requires new testing protocols and test equipment.
Image credit: Marvell
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As software takes over more of the modern car, the systems inside are being held to a higher standard of functional safety.
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As automotive SoCs become more complex, it can be challenging for automotive hardware suppliers to address the safety and security aspects independently. Still, engineers must...
The 4-layer security framework provides a holistic approach to secure the complete vehicle architecture, built on deep automotive applications know-how on vehicle networking, ...

Automotive Network Architecture

These articles explore the evolution from domain-based to zonal E/E architectures and SDV platforms. They highlight wiring reduction, centralized computing trends, Ethernet backbone deployment, virtualization, and scalable network design for next-generation vehicles.

A new approach is needed in automotive interconnection architectures—a fundamental shift in the way hardware and software functions are partitioned across newly configurable platforms...
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Looking for ways to shrink weight and cost, as well as simplify connectivity, in next-gen automotive designs, engineers are turning to zonal architectures.
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Zonal automotive architectures may be the wave of the future, but what exactly are they?
Elektrobit’s modular architecture makes creation of automotive network solutions fast, flexible, and secure.
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For electric and autonomous vehicles today, the transition from hardware- to software-centric development—called the software-defined vehicle—starts now. What are the implications...
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What tools do you need to design a software-defined vehicle?
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This Q&A delves into the Red Hat In-Vehicle Operating System for software-defined vehicles, which brings Linux to the automotive industry to help accelerate open-source innovation...

More Automotive Network TechXchanges

These TechXchanges include additional articles and multimedia content related to automotive networking. In the mix are time-sensitive networking for real-time control and single-pair Ethernet (SPE), which also find homes in other applications such as industrial systems.

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Time-sensitive networking is key to real-time automotive applications
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Ethernet-based process control computer
Synchronization of clocks across the network is becoming standardized. Check out the TSN-specific articles in this TechXchange.
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Single-pair Ethernet targets embedded applications like automotive and industrial automation.

About the Author

William G. Wong
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William G. Wong

Senior Content Director - Electronic Design and Microwaves & RF

I am Editor of Electronic Design focusing on embedded, software, and systems. As Senior Content Director, I also manage Microwaves & RF and I work with a great team of editors to provide engineers, programmers, developers and technical managers with interesting and useful articles and videos on a regular basis. Check out our free newsletters to see the latest content.

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I earned a Bachelor of Electrical Engineering at the Georgia Institute of Technology and a Masters in Computer Science from Rutgers University. I still do a bit of programming using everything from C and C++ to Rust and Ada/SPARK. I do a bit of PHP programming for Drupal websites. I have posted a few Drupal modules.  

I still get a hand on software and electronic hardware. Some of this can be found on our Kit Close-Up video series. You can also see me on many of our TechXchange Talk videos. I am interested in a range of projects from robotics to artificial intelligence. 

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