LAN91C94
PRELIMINARY
ISA/PCMCIA
Single-Chip Ethernet Controller with RAM
FEATURES
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ISA/PCMCIA Single-Chip Ethernet
Controller
4608 Bytes of On-Chip RAM
Supports IEEE 802.3 (ANSI 8802-3)
Ethernet Standards
TM
Simultasking
- Early Transmit and Early
Receive Functions
Hardware Memory Management Unit
Optional Configuration via Serial EEPROM
Interface (Jumperless)
Single +5V Power Supply
Low Power CMOS Design
100 Pin QFP, TQFP and VTQFP Package
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Buffered Architecture, Insensitive to Bus
Latencies (No Overruns/Underruns)
Supports Boot PROM for Diskless ISA
Applications
Network Interface
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Bus Interface
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Direct Interface to ISA and PCMCIA with No
Wait States
Flexible Bus Interface
16-Bit Data and Control Paths
Fast Access Time (40 ns)
Pipelined Data Path
Handles Block Word Transfers for Any
Alignment
High Performance Chained ("Back-to-
Back") Transmit and Receive
Pin Compatible with LAN91C92 (in ISA
mode)
Flat Memory Structure for Low CPU
Overhead
Dynamic Memory Allocation Between
Transmit and Receive
Integrates 10BASE-T Transceiver
Functions:
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Driver and Receiver
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Link Integrity Test
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Receive Polarity Detection and
Correction
Integrates AUI Interface
Implements 10 Mbps Manchester
Encoding/Decoding and Clock Recovery
Automatic Retransmission, Bad Packet
Rejection, and Transmit Padding
External and Internal Loopback Modes
Four Direct Driven LEDs for Status/
Diagnostics
Software Drivers
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Uses Certified LAN9000 Drivers Which
Operate with Every Major Network
Operating System
Software Driver Compatible with LAN91C92
and LAN91C100 (100 Mbps) Controllers in
ISA Mode
Software Driver Utilizes Full Capability of 32
Bit Microprocessor
Simultasking is a trademark and SMSC is a registered trademark of Standard Microsystems Corporation
SMSC [ SMSC CORPORATION ]
