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Newport Beach, CA 92660-3007

28946-BRF-001-A M03-0765

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trademarks are the property oftheir respective owners. Although Mindspeed

Technologies strives for accuracy in all its publications, this material may contain

errors or omissions and is subject to change without notice. This material is provided

as is and without any express or implied warranties, including merchantability, fitness

for a particular purpose and non-infringement. Mindspeed Technologies shall not be

liable for any special, indirect, incidental or consequential damages as a result of its use.

A CONEXANT BUSINESS

™

• Operating modes supported:

- ITU G.shdsl including EPAP modes

(ITU G.991.2)

- ITU G.handshake (ITU G.994.1)

- HDSL2 (ANSI T1.418)

- SDSL/2B1Q (AutoBaud)

- 4640 operation complies with

2B1Q spectral masks

- Proprietary/extended reach

(ANSI spectrum management

for loop transmission systems)

- Proprietary/high-speed (ANSI

spectrum management for loop

transmission systems)

• Highly integrated solution including

framer, microprocessor, ROM/RAM,

frequency synthesizer, and DSP

• Two packaging options for high

density and manufacturability

Option A(two-package):

• DSP/Framer/uP = 13x13 mm

• FPBGA; AFE/LD = 7x7 mm LGA

Option B (two package):

• DSP/Framer/uP = 24x24 mm

• LQFP; AFE/LD = 7 x 7 LGA

• Embedded microprocessor for

autonomous operation and EOC

processing

• Data rates from 192 Kbps to 4.6

Mbps in 8 Kbps increments

• Central office (COT) and

remote (RT) operation

• Glueless interface to popular

microprocessors

• Single hardware circuit supports all

speeds and modes of operation

• +1.8 V, +3.3 V and +12 V

power supplies

• JTAG boundary scan

• Operation over full industrial temper-

ature range (-40° C to +85° C)

Applications

• DSL-enabled customer premises

equipment (CPE)

• Integrated access devices (IADs)

• Digital subscriber line access

multiplexers (DSLAMs)

• N-Channel DAML and voice

pairgain systems

• Nx64K data transport

• Remote LAN access

• T1 and E1 HDSL-enabled

transport systems

• Cellular base station data links

• Campus modems

• Data, voice and video

transport systems

Product Features

Full System Solution

The M28946 pairs up with the M28927-29 integrated Analog Front

End/Line Driver (AFE/LD) to provide a full DSL solution. The inte-

grated line driver is capable of driving the high line-power EPAP

modes as specified by the G.shdsl standard. The integrated

frequency synthesizer, as with the rest of the ZipWirePlus family,

supports data rates from 192 Kbps to 4.6 Mbps, and requires only

one external crystal. This highly integrated DSL solution enables

OEMs to design and manufacture the most feature-rich, lowest

power and highest-density DSL equipment in the industry.

Multi-Level

TCPAM DSP

8051

Core

Copper Pair

ROM/RAM

HostPort

Interface

Host Port RAM Bus

AFE/

Line Driver

Hybrid

Framer

ATM/

TC

Utopia

PCM I/F

PCM I/F

M28946 block diagram