LAN9250T/ML

The LAN9250T/ML is an Automotive Ethernet physical layer transceiver (PHY) device from Micrel that provides an economical solution for Ethernet local area networks (LANs). It is designed to meet automotive Ethernet and advanced automotive connectivity requirements, enabling high-speed data transmissions over high-speed networks. The device is suitable for single media, multiple media, or mixed media networks, and provides high performance, low-power operation, advanced fault detection, and other features.

The LAN9250T/ML is a highly integrated dual-port Ethernet physical layer interface integrated circuit (IC) capable of operating in both 10 Mbps Ethernet and 100 Mbps Fast Ethernet modes. It features two Ethernet bi-directional ports, one configured to support 10 Mbps Ethernet and the other to support 100 Mbps Fast Ethernet. Each port implements an IEEE802.3-compliant full-duplex media access controller (MAC) and physical layer transceiver (PHY). The Fast Ethernet port is compliant to the 1GbE standard and is capable of data rate up to 1 Gbps.

The LAN9250T/ML provides a number of features to improve the functional capabilities of automotive Ethernet networks. The device is designed with a built-in Advanced Fault Detection (AFD) circuit and an Energy-Efficient Ethernet (EEE) circuitry. The AFD is designed to detect and indicate faulty conditions such as intermittent link integrity, polarity reversals, channel faults, and cable lengths in the automotive Ethernet. The EEE circuitry is designed to reduce power consumption and enhance system efficiency.

The LAN9250T/ML is a highly integrated device that includes an advanced CPU, an on-chip RAM, an Advanced Digital Clock, and a DMA controller. The on-chip RAM and DMA controller provide a high level of hardware data buffering. The advanced digital clock provides precise timing accuracy, allowing for precise synchronization of data transmissions over the automotive Ethernet. The high level of data buffering also helps to reduce jitter, allowing high-speed data transmissions to occur with minimal latency.

The LAN9250T/ML features a spread spectrum clock (SSC) circuit that helps to reduce electromagnetic interference (EMI) and improve data integrity. The SSC helps to reduce the spectrum of clock harmonics and can be adjusted to optimize data transmission over long cable lengths. In addition, the device also features a temperature-compensated oscillator (TCO) to maintain accurate frequency of transmission over temperature extremes.

The LAN9250T/ML is designed to comply with the latest IEEE 802.3 standards and is capable of operating over a wide range of temperatures. It is suitable for applications such as automotive infotainment systems, advanced driver assistance systems (ADAS), and body electronics, as well as other industrial applications. The device is also suitable for applications such as powertrain and safety systems, in-vehicle communication networks, and smart home/building networks.

The LAN9250T/ML supports a variety of data link and network layer protocols such as Ethernet, IP, TCP/IP, and UDP. The device is capable of operating in both half and full duplex modes and supports the transmission of Ethernet frames up to 1518 bytes long. The device also supports integrated error detection and correction to ensure reliable data transmission over automotive Ethernet networks.

The LAN9250T/ML is an ideal solution for automotive connectivity applications. The device features low power operation and advanced features to help reduce manufacturing costs, improve system performance and reliability, and increase market share. With its high-speed operation, reliability, and economical price point, the LAN9250T/ML is an ideal solution for automotive Ethernet systems.