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80C03
4-1
MD400121/C
AutoDUPLEX
TM
CMOS Ethernet
Data Link Controller
Features
I
Low Power CMOS Technology
I
Optimized for Embedded Ethernet Applications
I
Meets ANSI/IEEE 802.3 and ISO 8802-3 Standards
for Ethernet (10Base-5) Thin Net (10Base-2)
(10Base-T) and Twisted Pair
I
10 MHz Serial/Parallel Conversion
I
Preamble Generation and Removal
I
Automatic 32-Bit FCS (CRC) Generation and
Checking
I
Collision Handling, Transmission Deferral and
Retransmission with Automatic Jam and
Backoff Functions
I
Error Interrupt and Status Generation
I
Available as “Ethernet Core” for Custom ASIC
Applications
I
Single 5 V
±
10% Power Supply
I
Standard CPU and Peripheral Interface
Control Signals
I
Loopback Capability for Diagnostics
I
Single Phase Clock
I
Inputs and Outputs TTL Compatible
Functional Block Diagram
TxD
96253
I
Compatible with SEEQ 8003 and Provides
Additional Features
- 64 bit Multicast Filter
- Transmit Collision Counter
- Total Collision Counter
- Reports Status of “Carrier” and “SQE” During
Transmits
- Transmit No CRC Mode
- Transmit No Preamble Mode
- Transmit Packet Autopadding Mode
- Receive CRC Mode
- Receive Own Transmit Disable Mode
- Group Address Mode
- Fast Receive Discard Mode
- Full Duplex Mode
I
Supports AutoDUPLEX Mode for Automatic Full
Duplex Operation— Provides 20 MBits/sec
Bandwidth for Switched Networks
I
40 Pin DIP Package, 44 Pin PLCC
AutoDUPLEX is a trademark of SEEQ Technology Inc.
ENCODER
INTERFACE
DATA
INTERFACE
RxTxD (0 – 7)
RxRDY
16-BYTE
RECEIVE
FIFO
RECEIVE
COUNTER
CSN
RxC
DECODER
INTERFACE
SERIAL
/PARALLEL
PARALLEL
/SERIAL
16-BYTE
TRANSMIT
FIFO
CRC
STRIPPER
CRC
CHECKER
ADDRESS
CHECKER
RECEIVE BIT
CONTROL
PLA
RECEIVE
BYTE
CONTROL
CLOCK
DRIVERS
RxD
TxC
RESET
CONTROL
REGISTER
FILE
A2
A1
A0
CS
INT
R x DC
T x RET
COMMAND/
STATUS
INTERFACE
M
U
X
INTERRUPT
AND
CONTROL
CdSt (0 – 7)
WR
RD
COLL
TxEN
TRANSMIT
BYTE
CONTROL
TRANSMIT
BYTE
COUNTER
ATTEMPT
COUNTER
BACKOFF
CONTROLLER
CRC
GENERATOR
TxRDY
RxRD
RxTxEOF
TxWR
Note: Check for latest Data Sheet revision
before starting any designs.
SEEQ Data Sheets are now on the Web, at
www.lsilogic.com.
This document is an LSI Logic document. Any
reference to SEEQ Technology should be
considered LSI Logic.