CONEX CN9001 Datasheet

network access products

AccessRunner

™

Central Office ADSL Modem

CN9001

Distinguishing Features

• Compliant with ANSI T1.413 Issue 2,
ITU G.992.1 (G.DMT), and ITU G.992.2
(G.lite) ADSL Standards

• Two-chip solution, including ATM TC,
ADSL DSP, analog front-end, receive
op-amp, and receive filters

• Only 790mW per port (excluding line driver)

• Less than two square inches per port for
fully implemented solution

• Trellis coding and digital echo cancellation
for extended reach

• Interoperable G.lite and full-rate operation

• Industrial operating temperature range
(-40º to +85º C)

Low-Power, High-Density, Full-Rate
G.lite Solution

The Conexant AccessRunner™ Central Office ADSL modem
device set offers standards compliant, full-rate and G.lite
functionality with extended reach as a high-density, low-power
solution. The device set is fully compliant with ANSI T1.413
Issue 2, ITU G.992.1 (G.DMT), and ITU G.992.2 (G.lite)
standards. It supports a downstream data rate of up to 8 Mbps
(full rate)/1.5 Mbps (G.lite) and an upstream data rate of 1 Mbps
(full rate)/512 Kbps (G.lite). AccessRunner is designed for
multiport solutions and works in conjunction with the existing
microprocessor on a linecard. Power consumption is only
790mW per port (excluding the line driver). Each port occupies
less than two square inches of board space, including the
datapump, AFE, line driver, hybrid, transformer, and line
protection circuitry.

AccessRunner combines the flexibility of a programmable
solution with the low power, high performance, and low cost
of a customized DMT transceiver.The AFE is optimized for the
datapump, with integrated receiver op-amp and receive filters
to reduce board space and bill of materials.

features and specifications

Product Features

ADSL DMT Datapump

• Fixed function, parameter programmable
DSP, specifically designed for DMT ADSL

• Low power consumption (790mW per port)

• Supports ANSI T1.413 Issue 2,
ITU G.dmt (G.992.1 Annex A) and
ITU G.lite (G.992.2 Annex A) standards

• No external interleave RAM
required – 16K bytes built in

• Central office or remote
terminal configurable

• Reed-Solomon Forward Error
Correction (FEC)

• Echo cancellation

• Rate adaptation

• Packaging: 13mm x 13mm 176-pin
CABGA or 176-pin TQFP

• Device Number: 11627

Analog Front End

• Low power consumption (200mW)

• Low-power tone detection mode for G.lite

• Independent daisy chained digital serial data
and control interfaces help reduce package
size and board routing complexity

• Received signal path includes:

– Integrated hybrid receiver circuit with

programmable gain to help reduce discrete
component count and board space

– Low pass filtering and 27 dB of Automatic

Gain Control (AGC) to improve signal to
echo ratio

– 14-bit ADC

• Transmitted signal path includes:

– 30 dB of AGC for transmit power control
– High pass filtering to suppress noise
– 14-bit DAC

• Packaging: 32-pin TQFP

• Device Number: 20449

Software Features

• Common API commands allow simple
migration among Conexant xDSL products

• Control Code, in C, can be ported to
linecard’s own processor.The Control Code
(256 KB common among all ports with
additional 16 KB for each port) includes
DMT API, AFE API, and Controller API

• Single host interface API allows control
of all ports

• Upgradeable code

The chipset has been tested and verified with
several line drivers for optimum performance.

AccessRunner, Conexant, and the Conexant symbol are trademarks of Conexant Systems, Inc.

Linecard

Micro-

controller

Linecard

Glue

Logic

Line

Driver

#1

20449

AFE

#1

Linecard

Memory

11627

Datapump

#n

11627

Datapump

#1

20449

AFE

#n

Data

Interface

Datapump

Control

AFE

Control

Data

Interface

Port n

Port 1

Line

Driver

#n

Actual Size

www.conexant.com

Further Information

[e-mail]
[phone] (North America)
[phone] (International)
Order # 100656A
00-0432
Network Access
Printed in USA

World Headquarters

Conexant Systems,Inc.
4311 Jamboree Road
Newport Beach,CA
92660-3007
Phone:[phone]
Fax 1:[phone]
Fax 2:[phone]

Americas

U.S. Northwest/Pacific Northwest
– Santa Clara

Phone:[phone]
Fax:[phone]

U.S. Southwest – Los Angeles

Phone:[phone]
Fax:[phone]

U.S. Southwest – Orange County

Phone:[phone]
Fax:[phone]

U.S. Southwest – San Diego

Phone:[phone]
Fax:[phone]

U.S. North Central – Illinois

Phone:[phone]
Fax:[phone]

U.S. South Central – Texas

Phone:[phone]
Fax:[phone]

U.S. Northeast – Massachusetts

Phone:[phone]
Fax:[phone]

U.S. Southeast – North Carolina

Phone:[phone]
Fax:[phone]

U.S. Southeast – Florida/
South America

Phone:[phone]
Fax:[phone]

U.S. Mid-Atlantic – Pennsylvania

Phone:[phone]
Fax:[phone]

Canada – Ontario

Phone:[phone]
Fax:[phone]

Europe

Europe Central – Germany

Phone:[phone]
Fax:[phone]

Europe North – England

Phone:[phone]
Fax:[phone]

Europe – Israel/Greece

Phone:[phone]
Fax:[phone]

Europe South – France

Phone:[phone]
Fax:[phone]

Europe Mediterranean – Italy

Phone:[phone]
Fax:[phone]

Europe – Sweden

Phone:[phone]
Fax:[phone]

Europe – Finland

Phone:[phone]
Fax:[phone]

Asia – Pacific

Taiwan

Phone:[phone]
Fax:[phone]

Australia

Phone:[phone]
Fax:[phone]

China – Central

Phone:[phone]
Fax:[phone]

China – South

Phone:[phone]
Fax:[phone]

China – South (Satellite)

Phone:[phone]

China – North

Phone:[phone]
Fax:[phone]

India

Phone:[phone]
Fax:[phone]

Korea

Phone:[phone]
Fax:[phone]

Korea (Satellite)

Phone:[phone]
Fax:[phone]

Singapore

Phone:[phone]
Fax:[phone]

Japan

Phone:[phone]
Fax:[phone]