The KSZ9031RNXIC is a high-performance, low-power 10/100/1000 Base-T Ethernet transceiver designed for use in automotive and industrial applications. It features advanced energy-efficient solutions to enable systems to meet the requirements of the IEEE 802.3az standard, while also providing high performance and reliability. This transceiver is compliant with the IEEE 802.3 and 802.3u standards, supporting auto-negotiation for automatic configuration of the speed and duplex modes. It also includes advanced features such as cable diagnostics, loopback modes, and energy-efficient Ethernet, making it a versatile solution for a wide range of applications. Designed for use in harsh environments, the KSZ9031RNXIC operates over the industrial temperature range of -40°C to 105°C and is available in a small footprint package, making it suitable for space-constrained applications. It also includes built-in protection features to ensure robustness and reliability in demanding operating conditions. With its advanced features and rugged design, the KSZ9031RNXIC is an ideal choice for automotive and industrial Ethernet applications.