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LAN91C100FD REV. D
FEAST Fast Ethernet
Controller with Full
Duplex Capability
PRODUCT 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
ORDER NUMBER(S):
Data Brief
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 Running at Nibble Rate
MII Management Serial Interface
Seven Wire Interface to 10 Mbps ENDEC
EEPROM-Based Setup
Full Duplex Capability
LAN91C100-FD 208-PIN QFP PACKAGE
LAN91C100-FD-SS FOR 208-PIN QFP LEAD-FREE ROHS COMPLIANT PACKAGE
LAN91C100-FD FOR 208-PIN TQFP PACKAGE
LAN91C100-FD-ST FOR 208-PIN TQFP LEAD-FREE ROHS COMPLIANT PACKAGE
SMSC LAN91C100FD REV D PRODUCT PREVIEW Revision 1.0 (09-22-08)
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FEAST Fast Ethernet Controller with Full Duplex Capability
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2008 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property
damage. Any and all such uses withou t prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
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Revision 1.0 (09-22-08) 2 SMSC LAN91C100FD REV D
PRODUCT PREVIEW