Microchip and Hyundai explore 10BASE-T1S for in-vehicle networks

Microchip Technology and Hyundai Motor Group have joined forces to assess advanced in-vehicle network architectures for upcoming vehicle platforms. The primary focus of this collaboration is on Ethernet-based communication systems, which aim to tackle the increasing data and connectivity requirements in modern cars.

This partnership is significant for readers of eeNews Europe as it showcases how automakers are reevaluating network structures due to the rise of software-defined vehicles, ADAS, and electrification, which are driving the need for higher bandwidth and enhanced integration capabilities. It also indicates a growing industry interest in 10BASE-T1S as a potential alternative to traditional automotive buses.

10BASE-T1S as a foundation for zonal architectures

The core of this collaboration revolves around 10BASE-T1S, a Single Pair Ethernet (SPE) technology specifically developed for multi-drop communication over a single twisted pair. Unlike conventional point-to-point automotive Ethernet systems, 10BASE-T1S supports multiple nodes on the same network segment, potentially simplifying wiring in distributed vehicle architectures.

With the increasing integration of sensors, actuators, and domain controllers in vehicles, automakers are turning to Ethernet to streamline communications across previously isolated networks. Microchip suggests that adopting 10BASE-T1S could reduce the need for bridging between standard and proprietary buses, ultimately cutting down system complexity and costs while enhancing integration.

Hyundai Motor Group is collaborating with Microchip to explore the integration of 10BASE-T1S devices into upcoming vehicle platforms, including electric vehicles and systems related to autonomous driving and smart mobility. This partnership also grants Hyundai early access to product samples and technical assistance.

Matthias Kaestner, corporate vice president of Microchip’s automotive, datacenter, and networking business, emphasized, “As the automotive industry transitions to software-defined vehicles, the demand for high-performance and scalable in-vehicle networks has never been more critical. Our extensive range of Single Pair Ethernet hardware and software solutions empowers customers to reduce costs, risks, and time to market.”

Hyundai Motor Group expressed their enthusiasm for the collaboration, stating, “Partnering with Microchip allows us to leverage their Ethernet expertise to support next-generation vehicle connectivity. HMG is committed to accelerating the adoption of 10BASE-T1S technology to enable the next wave of intelligent, connected vehicles.”

Expanding Ethernet to the edge

10BASE-T1S aims to extend Ethernet connectivity closer to edge devices within vehicles, such as sensors and actuators. By facilitating multi-drop topologies, it could serve as a viable alternative to CAN and LIN in specific scenarios, particularly in zonal architectures where reducing harness weight and complexity is a key priority.