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Automotive Semiconductors and Functional Safety

Which correctly describes a feature of automotive Ethernet (100BASE-T1, 1000BASE-T1, etc.)?

  1. AIt communicates full-duplex over a single twisted pair, providing 100 Mbit/s or 1 Gbit/s of bandwidth while keeping wiring light
  2. BThe standard mandates the same four-pair cables and RJ45 connectors as office LANs, making the wiring heavier than in offices
  3. CIts communication speed is about the same as LIN, but because it is robust against noise it is used only for safety-critical control
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Answer: A. It communicates full-duplex over a single twisted pair, providing 100 Mbit/s or 1 Gbit/s of bandwidth while keeping wiring light

Automotive Ethernet standards such as 100BASE-T1 and 1000BASE-T1 communicate full-duplex over just a single twisted pair, are lighter than the four-pair cables used in offices, and also cope with harsh automotive noise conditions. With far greater bandwidth than CAN, they are used for camera and display data, the backbone network linking ECUs, software reprogramming and more. Time synchronization and latency guarantees are achieved by combining TSN (Time-Sensitive Networking) technologies.

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  1. Which correctly describes the ongoing shift to a "zonal architecture" in automotive electronic systems?
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