Article written by: Microchip Technology Inc.
Automotive designers are creating new area architectures in automotive applications with 10BASE-T1S Ethernet solutions. 10BASE-T1S technology allows low-speed devices to connect to a standard Ethernet network, eliminating the need for dedicated communications systems. Expanding its portfolio of qualified automotive Ethernet solutions, Microchip Technology Inc. A new family of LAN8650/1 MAC-PHY devices qualified for automotive applications. The LAN8650 and LAN8651 MAC-PHY devices include a Media Access Controller (MAC) and Serial Peripheral Interface (SPI) to connect devices at the edge of automotive networks.
LAN8650/1 devices with integrated MAC and SPI allow designers to connect 8-, 16- and 32-bit microcontrollers that do not have an integrated Ethernet MAC to 10BASE-T1S Single Pair Ethernet (SPE) networks. This allows sensors and actuators that interact between the digital world and the real world to become part of the entire Ethernet architecture. Connecting to even the simplest MCUs can reduce the overall size and cost of the design.
“Microchip continues to advance automotive connectivity solutions with its line of 10BASE-T1S products, providing the industry with integrated solutions that meet customer requirements,” said Matthias Kaestner, corporate vice president of Microchip’s automotive business. “This new technology will connect sensors and actuators in the physical world all the way to the cloud, enabling a seamless Ethernet architecture in vehicles, which in turn reduces development effort and time to market.”
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These devices are equipped with Time Sensitive Networking (TSN) support, which allows synchronized timing over long-range Ethernet networks. This time synchronization is critical for many automotive applications such as advanced driving assistance systems (ADAS).
The automotive qualified LAN8650/1 MAC-PHY meets the AEC-Q100 Class 1 qualification standard for enhanced durability in harsh environments, including an extended operating temperature range of -40°C to 125°C. Additionally, these devices are functional safety ready and designed for use in ISO 26262 applications.
Ethernet solutions continue to gain traction in the automotive industry due to well-established security protocols to keep networking systems secure. These systems can be extended to the edges of the network without the need for extensive changes or new development.