3

* Single chip Ethernet controller for PCI bus interface

* Software compatible to NE2000+, NE2000

* Support 35ns access time SRAM

* Integrated 10BaseT TP interface

--

Built-in pre-equalization circuitry for transmitter

--

smart squelch circuit with programmable threshold for receiver

--

Selective Link integrity test and link disable

--

Selective polarity detection and correction

--

Automatic selection between TP and AUI interfaces

* Full IEEE 802.3 AUI interface

--

Meet 10Base5 and 10Base2 standards

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Thin-net or Thick-net enable signal

* Jumper or Jumperless configuration

--

Jumperl2ess configuration with EEPROM

--

Jumper configuration with EEPROM storing Ethernet Address

* Direct drive to 4 status LED indicators: transmit, receive, collision, and Thin select

--

Transmit LED for packet transmitting status and power indicator

--

Receive LED for packet receiving status and Link status

--

Collision LED for collision status

--

Thin select LED for Thin 10Base-2 port select

* ISA NE2000 compatible mode, register compatible to National Semiconductor DP83905 & DP83906

* Optional Full duplex operation with speed up to 20Mbps

* Early receive interrupt allows parallel processing of data during receiving

* Early transmit correction ability allows parallel processing of data during transmission

* Support 16K, 32K Bootrom size

* Support PCI 32-bit data path transfaer with enhance 32-bit driver

* Software controllable power down feature

* Single +5V supply, 0.8um standard CMOS technology

* 100 pin PQFP package

Buffer

RAM

Boot

ROM

Config.

EEPROM

M-Bus Arbitrator

Data Bus FIFO

for Remote DMA

Remote

DMA

Registers

State

Machine

&

Local

DMA

Registers

&

State

Machine

&

Buffer

Mgmt.

PCI CFG

Configuration

Registers &

EEPROM Control

Shadow Ethernet

Address PROM

Page 1 Registers

&

Tally Counters

MAC Receiver

Protocol State

Machine &

Registers

Protocol State

Machine &

Registers

MAC Xmitter

PLL &

EnDec

TP MAU

Interface

AUI

LED &

Testing

MA0-14

MD0-7

_MSRD,

_MSWR,

EECS

RD+,RD-

TD+,TD-

RX+,RX-

TX+,TX-

CI+,CI-

THIN

MA0 - MA14

MD0 - MD7

Rcv. Data

Xmt Data

Internal Bus

_RXLED,

_TXLED,

_COLED

PCI

Bus

AD[31:0]

PCICLK

PCIRST#

INTA#

CBE#[3:0]

IDSEL

FRAME#

IRDY#

TRDY#

DEVSEL#

STOP#

PAR

Interface

Unit

Figure 1: Block Diagram