GENERAL DESCRIPTION
The LAN91C100 FEAST is a high-speed network controller designed to facilitate the implementation of Fast Ethernet adapters and connectivity products. It contains a dual speed CSMA/CD engine that implements the MAC portion of the CSMA/CD protocol at 10 and 100 Mbps and couples it with a lean and fast data and control path system architecture to ensure data movement with no bottlenecks at 100 Mbps.
Memory management is handled using a unique MMU (Memory Management Unit) architecture and a 32-bit wide data path. This I/O mapped architecture can sustain back-to-back frame transmission and reception for superior data throughput and optimal performance.

FEATURES
· Dual Speed CSMA/CD Engine (10 Mbps and 100 Mbps)
· Compliant with IEEE 802.3 100BASE-T Specification
· Supports 100BASE-TX, 100BASE-T4, and 10BASE-T Physical Interfaces
· 32 Bit Wide Data Path (Into Packet Buffer Memory)
· Support for 32 and 16 Bit Buses
· Support for 32, 16 and 8 Bit CPU Accesses
· Synchronous, Asynchronous and Burst DMA Interface Mode Options
· 128 Kbyte External Memory
· Built-in Transparent Arbitration for Slave
   Sequential Access Architecture
· Flat MMU Architecture with Symmetric
   Transmit and Receive Structures and Queues
· MII (Media Independent Interface)
   Compliant MAC-PHY Interface (Compliant with Emerging MII Standard Interface)
· MII Management Serial Interface
· Seven Wire Interface to 10 Mbps ENDEC (LAN83C694)
· EEPROM-Based Setup
· 208 Pin PQFP and TQFP Package