COM20020 datasheet(2/72 Pages) SMSC

2 / 72 page

GENERAL DESCRIPTION

SMSC's COM20020 is a member of the family of

Embedded ARCNET Controllers from Standard

Microsystems

Corporation.

The device is a

general purpose communications controller for

networking

microcontrollers

and

intelligent

peripherals

industrial,

automotive,

and

embedded control

environments

using

ARCNET protocol engine. The small 24 pin

package,

flexible

microcontroller

and

media

interfaces, eight- page message support, and

extended temperature range of the COM20020

make it the only true network controller optimized

for use in industrial, embedded, and automotive

applications. Using an ARCNET protocol engine

is the ideal solution for embedded control

applications because it provides a deterministic

token-passing protocol, a highly reliable and

proven networking scheme, and a data rate of up

to 5 Mbps when using the COM20020.

A token-passing protocol provides predictable

response times because each network event

occurs within a predetermined time interval, based

upon the number of nodes on the network. The

deterministic nature of ARCNET is essential in

real time applications. The integration of the 2Kx8

RAM buffer on-chip, the Command Chaining

feature, the 5 Mbps maximum data rate, and the

internal diagnostics make the COM20020 the

highest performance embedded communications

device available. With only one COM20020 and

one microcontroller, a complete communications

node may be implemented.

COM20020 Datasheet(PDF) 2 Page - SMSC Corporation

COM20020 Datasheet(HTML) 2 Page - SMSC Corporation

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