To provide OEMs with automotive-qualified 10BASE-T1S Ethernet solutions, Microchip Technology announced its first automotive-qualified Ethernet PHYs. This family of devices with AEC-Q100 Grade 1 qualification includes the LAN8670, LAN8671 and LAN8672.

The LAN8670/1/2 10BASE-T1S Ethernet PHYs are functional safety-ready and designed for use in ISO 26262 applications. These PHYs allow low speed devices to connect to a standard automotive Ethernet system without a separate communication system. Connecting multiple Ethernet PHYs to a common bus line makes it simpler to implement automotive applications on a single, well-known architecture, reducing cabling and switch ports and saving implementation costs. The LAN8670/1/2 enables the network edges to use Ethernet and Internet Protocol to easily communicate with the rest of the network infrastructure. These devices include advanced PHY diagnostics to provide troubleshooting capabilities. In addition, sleep/wake functionality allows for low-power modes. The family of Ethernet PHYs are available for purchase now and they are supported by the EVB-LAN8670-RMII, EVB-LAN8670-USB and MPLAB® Harmony v3.

The 10BASE-T1S device specifications include 10 Mbps, half-duplex mode, flexible topology with a multidrop bus line and point-to-point on a single balanced pair of conductors. These devices also feature enhanced EMC/EMI performance. Time-Sensitive Networking support allows for synchronized timing across far-reaching Ethernet networks.

Microchip was a key contributor in the development of the standards with IEEE for the automotive-qualified 10BASE-T1S technology. This technology simplifies system design by expanding the reach of Ethernet to the devices that are typically at the very edge of the network.

Microchip Technology Inc.
Chandler, Ariz.