General Description

The SMSC LAN91C111 is designed to facilitate the implementation of a third generation of Fast

Ethernet connectivity solutions for embedded applications. For this third generation of products,

flexibility and integration dominate the design requirements. The LAN91C111 is a mixed signal

Analog/Digital device that implements the MAC and PHY portion of the CSMA/CD protocol at 10 and 100 Mbps. The design will also minimize data throughput constraints utilizing a 32-bit, 16-bit or 8-bit bus Host interface in embedded applications.

The total internal memory FIFO buffer size is 8 Kbytes, which is the total chip storage for transmit and receive operations.

The SMSC LAN91C111 is software compatible with the LAN9000 family of products.

PRODUCT FEATURES

„ Single Chip Ethernet Controller

„ Dual Speed - 10/100 Mbps

„ Fully Supports Full Duplex Switched Ethernet

„ Supports Burst Data Transfer

„ 8 Kbytes Internal Memory for Receive and Transmit FIFO Buffers

„ Enhanced Power Management Features

„ Optional Configuration via Serial EEPROM Interface

„ Supports 8, 16 and 32 Bit CPU Accesses

„ Internal 32 Bit Wide Data Path (Into Packet Buffer Memory)

„ Built-in Transparent Arbitration for Slave Sequential Access Architecture

„ Flat MMU Architecture with Symmetric Transmit and Receive Structures and Queues

„ 3.3V Operation with 5V Tolerant IO Buffers (See Pin List Description for Additional Details)

„ Single 25 MHz Reference Clock for Both PHY and MAC

„ External 25Mhz-output pin for an external PHY supporting PHYs physical media.

„ Low Power CMOS Design

„ Supports Multiple Embedded Processor Host Interfaces

—ARM

—SH

— Power PC

— Coldfire

— 680X0, 683XX

— MIPS R3000

„ 3.3V MII (Media Independent Interface) MAC-PHY Interface Running at Nibble Rate

„ MII Management Serial Interface

„ 128-Pin QFP package; lead-free RoHS compliant package also available.

„ 128-Pin TQFP package, 1.0 mm height; lead-free RoHS compliant package also available.

„ Commercial Temperature Range from 0°C to 70°C (LAN91C111)

„ Industrial Temperature Range from -40°C to 85°C (LAN91C111i)

Network Interface

„ Fully Integrated IEEE 802.3/802.3u-100Base-TX/10Base-T Physical Layer

„ Auto Negotiation: 10/100, Full / Half Duplex

„ On Chip Wave Shaping - No External Filters Required

„ Adaptive Equalizer

„ Baseline Wander Correction

„ LED Outputs (User selectable – Up to 2 LED functions at one time)

— Link

— Activity

— Full Duplex

— 10/100

— Transmit

— Receive