Automotive electrical systems continue to increase in complexity, with a growing number of electronic control units (ECUs) implemented in vehicles. These ECUs are sharing real-time data on a much broader level, thus increasing the demand for network bandwidth.
To address the bandwidth issue, automotive companies partnered with leading integrated circuit (IC) manufacturers and system developers to establish an entirely new Ethernet standard tailored for automotive communication networks.
The Institute of Electrical and Electronic Engineers (IEEE) 802.3bw standard (also known as 100BASE-T1, previously known as BroadR-Reach) is a 100 Mbps automotive Ethernet standard aimed at increasing data throughput, meeting strong automotive emissions standards, and reducing cabling weight and cost in automotive networking. By using the basic principles of superposition and specific encoding and scrambling schemes, 100BASE-T1 reduces electromagnetic interference (EMI), cabling weight, cost and footprint size compared to Ethernet standards 10BASE-T and 100BASE-TX.