n e t w o r k a c c e s s p r o d u c t s
RS8973
Z i p W i r e
T M
2 B 1 Q
Distinguishing Features
Extensive suite of flexible software driver
features for a variety of applications
Integrated single chip transceiver
(DSP + AFE + LD + VCXO + CLAD)
Multi-rate operation, 144 Kbps 2320 Kbps
Low power dissipation
(about 850mW at 2.32 Mbps rate)
Meets ETR152 pulse template PSD
specifications for 784, 1168, 2320 Kbps
with single hybrid circuit components
High Speed, Low Power Single-Chip
SDSL/HDSL Transceiver
The RS8973 is Conexant's latest addition to the ZipWire family of
2B1Q xDSL modems. It offers up to 2.32 Mbps operation, ultra-low
power consumption and an integrated frequency synthesizer,
while maintaining pin-for-pin compatibility with the Bt8970. The
integrated frequency synthesizer is ideal for variable rate SDSL
applications. Via software control, the RS8973 can be programmed
to operate at data rates from 144 Kbps to 2320 Kbps, while
requiring only a single crystal as a clock reference. The transmis-
sion distance will increase as the data rate decreases -- reaching
as far as 21,000 ft (or 7 Km) at 144 Kbps and 8,200 ft (or 3.1 Km)
at 2.32 Mbps (over 26AWG wire, in absence of noise). In addition,
power consumption has been significantly reduced, allowing the
RS8973 to dissipate about 850mW when operating at 2.3 Mbps.
The power consumption decreases with lower data rates.
The RS8973 is fully compliant with standards for HDSL 2B1Q
transmission, and it meets the power spectral density (PSD) and
pulse template requirements as specified in ETSI TS 101 135 with
the same support circuit. This enables a single design utilizing the
RS8973 to be configured through a simple software command to
operate at either 784, 1168 or 2320 Kbps, and still meet the ETSI
requirements. No changes to the hardware are needed.
f e a t u r e s a n d s p e c i f i c a t i o n s
Product Features
Low power dissipation (about 850mW
at 2.32 Mbps operation)
Supports data rates from 144 Kbps
to 2320 Kbps
Integrated frequency synthesizer
Meets ETR152 pulse template and PSD
specs with same support circuit
Pin-for-pin and software compatible
with Bt8970
Supports automatic rate adaptation
Single-chip transceiver
Glueless interface to Motorola and
Intel processors
Flexible monitoring and control
ZipStartup available for faster
link establishment
RS8953 companion SDSL/HDSL
framers available
JTAG/IEEE standard 1149.1 compliant
100-pin PQFP package
-40C to +85C operation
Targeted Market Applications
Data access concentrators
E1 and T1 HDSL transport
Next generation DLC/FLC
Internet connectivity
N x 64 data access
Cellular base station
Campus modems
Legendary Performance Heritage
The RS8973 is Conexant's fifth generation full-duplex 2B1Q transceiver.
Its predecessors include the very popular ZipWire Bt8970 and Bt8960
devices, as well as the earlier generation Bt8952, Bt8921 and Bt8920
transceivers. Conexant also offers a family of "8953" HDSL/SDSL framers
which seamlessly mate with these transceivers. A single set of software
application programming interface (API) commands supports all of the
Rockwell HDSL/SDSL devices -- greatly simplifying upgrades to the next
generation devices.
The software driver provided with the RS8973 has been expanded and
tailored to support variable rate applications. This software includes an
API command for rate adaptation, which automatically determines the
maximum data rate achievable on a given loop. Conexant's ZipStartup
algorithm is also available -- significantly decreasing the time required
to establish a link between the transceivers.
Further Information
literature@conexant.com
1-800-854-8099 (North America)
33-14-906-3980 (International)
NA.PB36 99-0032
Network Access
Printed in USA
Web Site
www.conexant.com
World Headquarters
Conexant Systems, Inc.
4311 Jamboree Road
P. O. Box C
Newport Beach, CA
92658-8902
Phone: (949) 483-4600
Fax: (949) 483-6375
U.S. Florida/South America
Phone: (813) 799-8406
Fax: (813) 799-8306
U.S. Los Angeles
Phone: (805) 376-0559
Fax: (805) 376-8180
U.S. Mid-Atlantic
Phone: (215) 244-6784
Fax: (215) 244-9292
U.S. North Central
Phone: (630) 773-3454
Fax: (630) 773-3907
U.S. Northeast
Phone: (978) 692-7660
Fax: (978) 692-8185
U.S. Northwest/Pacific West
Phone: (408) 249-9696
Fax: (408) 249-7113
U.S. South Central
Phone: (972) 733-0723
Fax: (972) 407-0639
U.S. Southeast
Phone: (770) 246-8283
Fax: (770) 246-0018
U.S. Southwest
Phone: (949) 483-9119
Fax: (949) 483-9090
APAC Headquarters
Conexant Systems Singapore,
Pte. Ltd.
1 Kim Seng Promenade
Great World City
#09-01 East Tower
Singapore 237994
Phone: (65) 737 7355
Fax: (65) 737 9077
Australia
Phone: (61 2) 9869 4088
Fax: (61 2) 9869 4077
China
Phone: (86 2) 6361 2515
Fax: (86 2) 6361 2516
Hong Kong
Phone: (852) 2827 0181
Fax: (852) 2827 6488
India
Phone: (91 11) 692 4780
Fax: (91 11) 692 4712
Korea
Phone: (82 2) 565 2880
Fax: (82 2) 565 1440
Europe Headquarters
Conexant Systems France
Les Taissounieres B1
1680 Route des Dolines
BP 283
06905 Sophia Antipolis Cedex
France
Phone: (33 4) 93 00 33 35
Fax: (33 4) 93 00 33 03
Europe Central
Phone: (49 89) 829 1320
Fax: (49 89) 834 2734
Europe Mediterranean
Phone: (39 02) 9317 9911
Fax: (39 02) 9317 9913
Europe North
Phone: (44 1344) 486 444
Fax: (44 1344) 486 555
Europe South
Phone: (33 1) 41 44 36 50
Fax: (33 1) 41 44 36 90
Middle East Headquarters
Conexant Systems Commercial
(Israel) Ltd.
P. O. Box 12660
Herzlia 46733, Israel
Phone: (972 9) 952 4064
Fax: (972 9) 951 3924
Japan Headquarters
Conexant Systems Japan Co., Ltd.
Shimomoto Building
1-46-3 Hatsudai,
Shibuya-ku,Tokyo
151-0061 Japan
Phone: (81 3) 5371-1567
Fax: (81 3) 5371-1501
Taiwan Headquarters
Conexant Systems,Taiwan Co., Ltd.
Room 2808, 333
International Trade Building
Keelung Road, Section 1
Taipei 110,Taiwan, ROC
Phone: (886 2) 2720 0282
Fax: (886 2) 2757 6760
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