LAN9221 Datasheet PDF – 10/100 Ethernet Controller

Part Number: LAN9221

Function: High-Performance 16-bit Non-PCI 10/100 Ethernet Controller

Package: QFN 56 Type

Manufacturer: SMSC (Microchip)


LAN9221 datasheet



The LAN9221, LAN9221i is a full-featured, single-chip 10/100 Ethernet controller designed for
embedded applications where performance, flexibility, ease of integration and system cost control are required. The devices has been specifically designed to provide high performance and throughput for 16-bit applications. The ICs is fully IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant, and supports HP Auto-MDIX. The variable voltage I/O signals of the LAN9221, LAN9221i accommodate lower voltage I/O signalling without the need for voltage level shifters.


1. Optimized for high performance applications

2. Efficient architecture with low CPU overhead

3.  Easily interfaces to most 16-bit embedded CPU’s

4. 1.8V to 3.3V variable voltage I/O accommodates wide range of I/O signalling without voltage level shifters

5. Integrated PHY with HP Auto-MDIX support

6. Integrated checksum offload engine helps reduce CPU load

7. Low pin count and small body size package for small form factor system designs



LAN9221 Datasheet PDF Download

LAN9221 pdf

Other data sheets are available within the file: