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91C94 Datasheet, PDF (1/120 Pages) SMSC Corporation – ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM | |||
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LAN91C94
PRELIMINARY
ISA/PCMCIA
Single-Chip Ethernet Controller with RAM
FEATURES
⢠ISA/PCMCIA Single-Chip Ethernet
Controller
⢠4608 Bytes of On-Chip RAM
⢠Supports IEEE 802.3 (ANSI 8802-3)
Ethernet Standards
⢠Simultasking TM - 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
Bus Interface
⢠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
⢠Buffered Architecture, Insensitive to Bus
Latencies (No Overruns/Underruns)
⢠Supports Boot PROM for Diskless ISA
Applications
Network Interface
⢠Integrates 10BASE-T Transceiver
Functions:
- Driver and Receiver
- Link Integrity Test
- 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
⢠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
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