General Description

The LAN9211 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 LAN9211 has been specifically designed to provide high performance and throughput for 16-bit applications. The LAN9211 is fully IEEE 802.3 10BASE-T and 802.3u 100BASE-TX compliant, and supports HP Auto-MDIX.

The LAN9211 includes an integrated Ethernet MAC and PHY with a high-performance SRAM-like slave interface. The simple, yet highly functional host bus interface provides a glue-less connection to most common 16-bit microprocessors and microcontrollers as well as 32-bit microprocessors with a 16-bit external bus. The integrated checksum offload engines enable the automatic generation of the 16-bit checksum for received and transmitted Ethernet frames, offloading the task from the CPU. The LAN9211 also includes large transmit and receive data FIFOs to accommodate high latency applications. In addition, the LAN9211 memory buffer architecture allows highly efficient use of memory resources by optimizing packet granularity.

Applications

The LAN9211 is well suited for many medium-high-performance embedded applications, including:

▪ Medium-range cable, satellite and IP set-top boxes

▪ High-end audio distribution systems

▪ Digital video recorders

▪ DVD Recorders/Players

▪ Digital TV

▪ Digital media clients/servers

▪ Home gateways

PRODUCT FEATURES

Highlights

▪ Optimized for high performance applications

▪ Efficient architecture with low CPU overhead

▪ Easily interfaces to most 16-bit embedded CPU’s

▪ Integrated PHY with HP Auto-MDIX support

▪ Integrated checksum offload engine helps reduce CPU load

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

▪ Supports audio & video streaming over Ethernet: 1-2 high-definition (HD) MPEG2 streams

Target Applications

▪ Cable, satellite, and IP set-top boxes

▪ Digital video recorders and DVD recorder/players

▪ Digital TV

▪ Digital media clients/servers and home gateways

▪ Video-over IP solutions, IP PBX & video phones

▪ Wireless routers & access points

▪ High-end audio distribution systems

Key Benefits

▪ Non-PCI Ethernet controller for high performance sensitive applications

— 16-bit interface with fast bus cycle times

— Burst-mode read support

▪ Minimizes dropped packets

— Internal buffer memory can store over 200 packets

— Automatic PAUSE and back-pressure flow control

▪ Minimizes CPU overhead

— Supports Slave-DMA

— Interrupt Pin with Programmable Hold-off timer

▪ Reduces system cost and increases design flexibility

▪ SRAM-like interface easily interfaces to most embedded CPU’s or SoC’s

▪ Reduced Power Modes

— Numerous power management modes

— Wake on LAN

— Magic packet wakeup

— Wakeup indicator event signal

— Link Status Change

▪ Single chip Ethernet controller

— Fully compliant with IEEE 802.3/802.3u standards

— Integrated Ethernet MAC and PHY

— 10BASE-T and 100BASE-TX support

— Full- and Half-duplex support

— Full-duplex flow control

— Backpressure for half-duplex flow control

— Preamble generation and removal

— Automatic 32-bit CRC generation and checking

— Automatic payload padding and pad removal

— Loop-back modes

▪ Flexible address filtering modes

— One 48-bit perfect address

— 64 hash-filtered multicast addresses

— Pass all multicast

— Promiscuous mode

— Inverse filtering

— Pass all incoming with status report

— Disable reception of broadcast packets

▪ Integrated 10/100 Ethernet PHY

— Supports HP Auto-MDIX

— Auto-negotiation

— Supports energy-detect power down

▪ Host bus interface

— Simple, SRAM-like interface

— 16-bit data bus

— 16Kbyte FIFO with flexible TX/RX allocation

— One configurable host interrupt

▪ Miscellaneous features

— Small form factor, 56-pin QFN lead-free RoHS Compliant package

— Integrated 1.8V regulator

— Integrated checksum offload engine

— Mixed endian support

— General Purpose Timer

— Optional EEPROM interface

— Support for 3 status LEDs multiplexed with Programmable GPIO signals

▪ Single 3.3V Power Supply with 5V tolerant I/O

▪ 0°C to +70°C Commercial Temperature Support