MCHPLAN7850-I/8JX
Overview
The LAN7850-I/8JX is a high-performance, single-chip USB 2.0 to 10/100/1000 Ethernet controller with an integrated Gigabit PHY. It supports Energy Efficient Ethernet (IEEE 802.3az) and features specialized NetDetach technology to automatically manage USB bus attachment based on the Ethernet cable status. Designed for industrial temperature ranges, it provides a compact 8x8mm footprint for adding high-speed networking to embedded systems via a standard USB 2.0 interface.
Why Choose This Part
The device integrates the MAC and PHY into a single 56-pin package, reducing BOM count and PCB complexity. It offers multiple low-power suspend modes (SUSPEND0-3) and consumes only 211mA during 1000BASE-T full-duplex operation at USB Hi-Speed. The inclusion of 512 bytes of EEPROM and 12KB of RAM allows for flexible configuration and efficient packet buffering without external memory.
Applications
Key Specifications
Getting Started
To evaluate the chip, engineers can use the EVB-LAN7850 evaluation board which provides a standard RJ45 jack and USB Type-A connector. Microchip provides certified drivers for Windows, Linux, and macOS, along with an OTP programming tool for customizing MAC addresses and device descriptors during production.
