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ICSS1001 ICSS1002 and ICSS1003 IC SS Power Line Carrier Local Area Network Chip Set

PRELIMINARY

February 1995

ICSS1001 ICSS1002 and ICSS1003

IC SS Power Line Carrier

Local Area Network Chip Set

General Description

Integrated Circuit Spread Spectrum (IC SS

TM

) is a power

line carrier local area network system implemented in a

three chip solution using power line carrier technology de-

veloped by Itron and Cyplex It is designed to operate with

high reliability over the full range of power line conditions

IC SS is offered with an integral local area network proto-

col designed specifically for supervisory control and data

acquisition applications

Y

Y

Y

Features

Y

Y

Y

Y

Spread spectrum adaptive frequency hopping modula-

tion provides high immunity to power line noise

Network transparent option offers the user the ability to

carry proprietary protocols transparently or to use the

built-in link layer protocol

A very flexible interface to the user鈥檚 circuit is provided

configurable either to accept serial data or to accept

data from an 8-bit parallel bus Handshake lines are

provided to facilitate interface to common microproces-

sors in parallel mode

When used with the specified coupling networks the

modem operates in conformance with both the

CENELEC standard for electric utility application

(9 kHz鈥?5 kHz) and with FCC Class A requirements

Data rate is variable based on line conditions from

300 bps to 3200 bps

When used with the specified coupling networks the

system provides 93 dB of dynamic range appropriate

for line loading and attenuation effects common on

power lines

The modem鈥檚 bit error rate performance in additive

white noise approaches the theoretical maximum and

in addition it provides excellent immunity to the impul-

sive noise characteristic of power lines

Applications

Y

Y

Y

Y

Y

Automated meter reading (AMR)

Demand side management

Distribution automation

Environmental control systems

Other power line carrier applications requiring high

reliability

Block Diagram

TL DD 11727 鈥?1

TRI-STATE is a registered trademark of National Semiconductor Corporation

MICROWIRE

TM

and WATCHDOG

TM

are trademarks of National Semiconductor Corporation

IC SS

TM

is a trademark of Cyplex

C

1995 National Semiconductor Corporation

TL DD11727

RRD-B30M105 Printed in U S A

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