LAN91C100

LAN91C100 ADVANCE INFORMATION FEAST™ Fast Ethernet Controller 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 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 f...