The new TNETD4000R remote
terminal ADSL chipset from
Texas Instruments is designed to
give OEMs a complete, cost-
effective and simplified way of
building next-generation remote
ADSL solutions. Designed for
remote applications such as
external modems, small office/
home office (SOHO) routers and
residential gateways, the '4000R
builds on TI's leadership in
supplying breakthrough solutions
for the ADSL industry.

The chipset leverages the in-

dustry's most advanced DSP core
technology--TI's TMS320C6000
generation--and leading-edge
analog and integration capabili-
ties to deliver a cost effective,
interoperable and highly program-
mable solution for stand-alone
customer premise applications.
The '4000R chipset builds on two
previous generations of modem
design from Texas Instruments
and leverages Amati ADSL soft-
ware and technology.

High Integration, Lower Total
System Cost, Design Ease
Like all of TI's ADSL solutions,
the '4000R chipset features high
levels of integration and function-
ality. The chipset is a complete
ADSL solution, offering every-
thing necessary to implement a
remote ADSL solution, from
Tip/Ring to Utopia 2 or serial
interfaces and all the required
software. The five-device chipset
integrates all necessary program,
data, and interleave memory,
along with all of the real-time

microcontroller functions. By
integrating functions such as the
microcontroller, the '4000R
enables faster time to market
while reducing total system cost.
TI also improves time-to-market
by providing complete develop-
ment kits that include evaluation
module boards, full documenta-
tion and detailed reference
designs with schematics, gerber
files, test routines and design
notes. Finally, the latest analog
front end (AFE) design helps
reduce the board area by more
than 40%. This contributes
significantly to a lower bill of
materials (BOM).

Proven Interoperability

Higher performance doesn't
mean anything without the

assurance of interoperability. The
'4000R chipset has proven inter-
operability with leading manufac-
turers of ADSL equipment, giving
designers the assurance that
systems they design in the lab
will work in the real world, multi-
vendor environment.

Maximum Programmability

Based on TI's TMS320C6000 core
DSP technology, the chipset
offers maximum programmability
to give designers a powerful yet
extremely flexible implementa-
tion. For instance, designers can
implement the ITU (International
Telecommunications Union)
G.992.1 Annex A (G.dmt-ADSL
over POTS), G.992.1 Annex B
(ADSL over ISDN) and G.992.2
(G.lite) standards, as well as

Key Benefits

· Based on TMS320C6000 DSP technology for

maximum programmability

· Powered by Amati technology

· Complete solution including line driver and

receiver

· Proven interoperability

· Advanced design reduces board space by

40 percent

H E

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E A D E R

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N A L O G

Product Bulletin

TNETD4000R Remote
ADSL Chipset Solution

The TNETD4000R chipset gives designers a highly integrated and complete solution
for remote-terminal ADSL applications.

PowerPad is a trademark of Texas Instruments
Incorporated

Printed in U.S.A. by __________________

SPAT105

Important Notice: The products and services of Texas
Instruments and its subsidiaries described herein are sold
subject to TI's standard terms and conditions of sale.
Customers are advised to obtain the most current and
complete information about TI products and services before
placing orders. TI assumes no liability for applications
assistance, customer's applications or product designs,
software performance, or infringement of patents. The
publication of information regarding any other company's
products or services does not constitute TI's approval,
warranty or endorsement thereof.

ANSI (Americal National
Standards Institute) standard
T1.413i2, while leveraging the
G.994.1(G.hs) and G.997.1
(G.ploam) protocol from a single
code load on the same physical
hardware platform. This flexibil-
ity gives manufacturers a power-
ful tool for meeting market needs
as they emerge, without the need
for expensive new hardware.

TI's ADSL solutions inherit

much of their programmability
and interoperability from TI's
purchase of Amati, a pioneer in
the DSL industry. With the com-
bination of TI's silicon expertise
and Amati's seven years of stan-
dards-based DSL intellectual
work, '4000R chipset customers
get all of the technology they
need to implement any version of
standards-based ADSL. This rep-
resents a tremendous advantage
in getting leading-edge products
to market quickly.

For More Information
Leading-edge hardware and soft-
ware, proven interoperability and
support from one of the industry's
most capable suppliers--all com-
bine to make TI's TNETD4000R
chipset a powerful choice for
next-generation remote terminal
ADSL systems. If you would like
to learn more about how TI can
give you the tools for a winning
design, please contact your local
TI field sales office.

Or, you'll fine more informa-

tion on the web at:

http://www.ti.com/sc/access

TNETD4000R Remote Terminal Chipset

The Devices

Digital Section

TNETD4150 Universal Digital
Interface--The Universal Digital
Interface (UDI) provides the data
interfaces (serial or Utopia 2) for the
modem. Functions performed by
the UDI include bearer channel
muxing/demuxing, ADSL framing/
deframing, ATM transmission con-
vergence, Trellis coding, Reed-
Solomon encode/decode, CRC
scrambling/descrambling, and
interleave/deinterleave (8-Kbytes
on-chip interleave memory).

TNETD4250 ADSL Transceiver--
The TNETD4250 utilizes TI's
industry-leading 'C6000 DSP
technology to provide superior
performance and unparalleled pro-
grammability. The device performs
the ADSL digital signal processing
and all real-time operation, adminis-
tration and maintenance (OA&M)
and management functions for the
modem. Specific digital signal pro-
cessing includes the control and
processing of all initialization/
training sequences and the steady
state ADSL modem processing.
The steady state processing func-
tions include FFT/IFFT, line equaliza-
tion (FEQ & TEQ) filtering and echo
cancellation.

Analog Front End

TNETD2011/13--The TNETD2011
and '2013 are high performance
ADSL codecs that provide a 14-bit
analog-to-digital converter, 14-bit
digital-to-analog converter and a
complete set of digital and analog
filters. The '2011 device features
sets of filters for ADSL over POTS
while the '2013 provides the filter-
ing for ADSL over ISDN applica-
tions. The set of POTS filters in the
'2011 are applicable for both full-
rate and G.lite implementations.

THS6022--A remote terminal line
driver, the THS6022 contains two
high-speed, high-current drivers
capable of providing 250-mA output
current (min) into a 50-ohm load.
The drivers can be configured dif-
ferentially to drive a 50-V

p-p

output

signal over low-impedance lines.

THS6062--Using the latest ultra-
low-noise amplifier technology, the
THS6062 consists of two low-
noise, high-speed remote-terminal
line receive amplifiers.

Printed on recycled paper.

Part Number TNETD4000R