LAN9221-ABZJ

Controllers Overview

The LAN9221-ABZJ is a high-performance, single-chip 10/100 Ethernet controller designed for embedded applications. It integrates an IEEE 802.3 compliant MAC and PHY with a 16-bit SRAM-like host interface. The device supports variable voltage I/O from 1.8V to 3.3V, eliminating the need for level shifters. Key features include integrated checksum offload engines, configurable TX/RX FIFOs totaling up to 16Kbytes, and comprehensive power management modes such as Wake-on-LAN and Magic Packet detection. It operates within a temperature range of -40°C to +85°C and is housed in a 56-pin QFN package.

Controllers Feature Summary

• Integrates a 10/100 Ethernet MAC and PHY with HP Auto-MDIX support
• Features a 16-bit SRAM-like slave interface for glue-less connection to embedded CPUs
• Includes integrated checksum offload engines to reduce CPU overhead
• Supports variable voltage I/O ranging from 1.8V to 3.3V

Controllers Applications

• Cable, satellite, and IP set-top boxes
• Digital video recorders and DVD recorder/players
• Digital TV and digital media clients/servers
• Home gateways and wireless routers
• Industrial and embedded systems requiring extended temperature support

Controllers Procurement Notes

Verify the specific suffix 'ABZJ' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure that the ordering documentation matches the required commercial or industrial temperature grade. Confirm RoHS compliance status directly with the supplier prior to procurement.

Controllers Selection Notes

Select this component when a non-PCI Ethernet solution is required for 16-bit embedded processors. It is suitable for designs needing low CPU overhead through DMA and checksum offloading. Consider the 56-pin QFN package constraints and the requirement for a 25MHz crystal oscillator. Verify that the host system supports the necessary variable voltage I/O levels.

Controllers Part Context

The LAN9221 belongs to Microchip's LAN9221 family of high-performance 10/100 Ethernet controllers. This series is optimized for embedded applications where performance and ease of integration are critical. The device serves as a complete Ethernet solution by combining MAC and PHY functions on a single chip, simplifying board design compared to discrete solutions.

Controllers Replacement Considerations

Consult the official datasheet for confirmed substitute part numbers. Direct replacements must maintain the 16-bit interface and 56-pin QFN form factor.