Microchip 72-Pin SQFN Ethernet Controller 1.8V to 3.3V 2.5Gbps RGMII Full Duplex/Half Duplex LAN7431-I/YXX

Microchip LAN7431-I/YXX is a high-performance 72-pin SQFN Ethernet Controller designed for advanced networking applications. Operating from a supply voltage range of 1.8V to 3.3V, this single-chip controller supports data transfer rates up to 2.5Gbps with Full Duplex and Half Duplex communication modes via RGMII interface. Ideal for embedded systems requiring robust and reliable Ethernet connectivity.

This device adheres to the IEEE 802.3az standard for energy-efficient operation and offers extensive temperature resilience from -40°C to 85°C, suitable for industrial and automotive environments where temperature variation is critical.

The controller integrates PCIe 3.1 interface at 2.5GT/s and supports low power states LPSS L1.1 and L1.2, reducing energy consumption during idle periods. It requires only a single 25MHz crystal or single-ended clock for operation, simplifying system design.

Advanced features include support for 9K jumbo frames to increase Ethernet frame size, enhancing network throughput and efficiency. The internal OTP memory replaces the need for external EEPROM, reducing component count and improving reliability.

Precision timing is facilitated by IEEE 1588-2008 protocol compliance, including E2E and P2P time stamping with programmable time compare output such as 1PPS, enabling synchronization in distributed networks. Loopback mode is external, allowing flexible testing configurations.

Driver support is comprehensive with Windows OneCore WHQL certification and inclusion in the Linux mainline kernel, ensuring broad compatibility for system integration across diverse platforms.

This controller is commonly used in industrial, telecommunications, automotive, and networking equipment applications requiring reliable high-speed Ethernet interfaces with power efficiency and advanced timing protocols.

Equipped with 72-pin SQFN package for surface mounting. Supports IEEE 802.3az standard for energy-efficient Ethernet. Operates across temperature range from -40°C to 85°C. Includes internal OTP memory eliminating external EEPROM requirement.

Compatible with PCIe 3.1 @ 2.5GT/s interface. Supports 9K jumbo frames for enhanced network performance. Implements IEEE 1588-2008 Precision Time Protocol with programmable time compare output. Comes with comprehensive driver support for Windows and Linux platforms.

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