First automotive 10BASE-T1S TSN Ethernet chips from Microchip

First automotive 10BASE-T1S TSN Ethernet chips from Microchip

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By Nick Flaherty

Microchip has launched its first automotive Ethernet short range 10Base-T1S physical layer devices with functional safety and time sensitive networking (TSN) support.

The LAN8670/1/2 10BASE-T1S Ethernet PHYs are designed for use in ISO 26262 applications to connect low-speed devices that previously required their own communication systems into a standard Ethernet network with 10Mbit/s links.

The specifications include 10 Mbps, half-duplex mode, flexible topology with multidrop bus line and point-to-point and use a single balanced pair of conductors. The devices also feature enhanced electromagnetic compatibility/electromagnetic interference (EMC/EMI) performance. TSN support allows for synchronized timing across Ethernet networks and the deterministic operation that is critical for many applications throughout automotive zonal architectures.

“Microchip continues to prioritize connectivity solutions for the automotive industry with the expansion of its line of 10BASE-T1S products,” said Matthias Kaestner, vice president of Microchip’s automotive products business unit. “This new technology will connect the sensors and actuators used in the physical world all the way to the cloud, and it will enable a seamless Ethernet architecture everywhere.”

Microchip was a key contributor in the development of the standards with IEEE for the automotive qualified 10BASE-T1S technology that was ratified in 2020.

This technology simplifies system design by expanding the reach of Ethernet to the devices that are typically at the very edge of the network.

The LAN8670/1/2 PHYs are supported with the EVB-LAN8670-RMII, EVB-LAN8670-USB and MPLAB Harmony v3 and are available now.


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