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Transceiver. M28945 Datasheet

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Transceiver. M28945 Datasheet






M28945 Transceiver. Datasheet pdf. Equivalent




M28945 Transceiver. Datasheet pdf. Equivalent





Part

M28945

Description

Transceiver



Feature


( DataSheet : www.DataSheet4U.com ) ™ A CONEXANT BUSINESS ZipWirePlus™ G .shdsl Transceiver with Embedded Microp rocessor M28945 Complete G.shdsl/HDSL2 /SDSL Multi-Rate DSL Solution Multimode Operation The ZipWirePlus single-port multimode DSL solution not only complie s with the ITU G.shdsl standard; it als o supports the optional enhanced perfor mance asymmetrical PSD.
Manufacture

Mindspeed Technologies

Datasheet
Download M28945 Datasheet


Mindspeed Technologies M28945

M28945; (EPAP) modes of operation. In addition, it complies with the ANSI HDSL2 standa rd (ANSI T1.418) and delivers interoper ability with Mindspeed Technologies’ marketleading ZipWire™ transceiver s through operation in 2B1Q multi-rate mode. The 2B1Q mode supports AutoBaud for SDSL interoperability, rate optim ization and fast connect times. The Zip WirePlus also supports Min.


Mindspeed Technologies M28945

dspeed’s proprietary modes (such as 32 -PAM, 4.6 Mbps operation) which provide s high-speed operation. All of these mo des are supported by a single hardware circuit (i.e., one transformer, crystal and hybrid for all modes) and can be c onfigured in real time via software con trol. timeslots. The UTOPIA level 2 int erface provides ATM TClayer processing. The framer automati.


Mindspeed Technologies M28945

cally extracts and inserts DSL overhead (i.e., EOC, indicator and Z-bits, CRC, sync word, etc.) and passes it on to th e embedded microprocessor. All G.shdsl, HDSL2, and SDSL frame formats and EOC m essaging protocols are supported, as we ll as other non-standard SDSL frame for mats, including framer bypass mode. > K E Y F E AT U R E S > Single-port CPE solution > Multim.

Part

M28945

Description

Transceiver



Feature


( DataSheet : www.DataSheet4U.com ) ™ A CONEXANT BUSINESS ZipWirePlus™ G .shdsl Transceiver with Embedded Microp rocessor M28945 Complete G.shdsl/HDSL2 /SDSL Multi-Rate DSL Solution Multimode Operation The ZipWirePlus single-port multimode DSL solution not only complie s with the ITU G.shdsl standard; it als o supports the optional enhanced perfor mance asymmetrical PSD.
Manufacture

Mindspeed Technologies

Datasheet
Download M28945 Datasheet




 M28945
( DataSheet : www.DataSheet4U.com )
A CONEXANT BUSINESS
ZipWirePlusG.shdsl Transceiver
with Embedded Microprocessor
M28945
Complete G.shdsl/HDSL2/SDSL Multi-Rate
DSL Solution
Multimode Operation
The ZipWirePlus single-port multimode DSL solution not
only complies with the ITU G.shdsl standard; it also supports
the optional enhanced performance asymmetrical PSD
(EPAP) modes of operation. In addition, it complies with
the ANSI HDSL2 standard (ANSI T1.418) and delivers
interoperability with Mindspeed Technologies’™ market-
leading ZipWire™ transceivers through operation in 2B1Q
multi-rate mode. The 2B1Q mode supports AutoBaud™
for SDSL interoperability, rate optimization and fast
connect times. The ZipWirePlus also supports
Mindspeed’s proprietary modes (such as 32-PAM, 4.6
Mbps operation) which provides high-speed operation.
All of these modes are supported by a single hardware
circuit (i.e., one transformer, crystal and hybrid for
all modes) and can be configured in real time via
software control.
Embedded Microprocessor
The ZipWirePlus chipset includes an embedded micro-
processor and a full suite of software that facilitates
speedy and simplified development of systems that
comply with all applicable ITU, ANSI and ETSI standards.
The embedded microprocessor and software handle the
EOC processing and many other functions often dele-
gated to an external host controller in competing solu-
tions. This greatly reduces software-porting efforts and
eliminates real-time processing requirements for an
external host controller.
Flexible Framer
The ZipWirePlus’s integrated T1/E1 framer supports two
PCM interfaces, each capable of managing up to 72
www.DataSheet4U.com
> KEY FEATURES
> Single-port CPE solution
> Multimode operation
> Low power consumption
> Highly integrated solution
> Embedded microprocessor
> Operation up to 4.6MB
> Dual PCM interfaces
(Narrowband)
> Interoperable with ZipWire
2B1Q transceivers including
AutoBaud
timeslots. The UTOPIA level 2 interface provides ATM TC-
layer processing. The framer automatically extracts and
inserts DSL overhead (i.e., EOC, indicator and Z-bits, CRC,
sync word, etc.) and passes it on to the embedded micro-
processor. All G.shdsl,HDSL2, and SDSL frame formats
and EOC messaging protocols are supported, as well as
other non-standard SDSL frame formats, including
framer bypass mode.
Full System Solution
The ZipWirePlus includes an integrated frequency synthe-
sizer to provide a full DSL solution. The frequency synthe-
sizer, along with the rest of the ZipWirePlus, 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.
The matching M28927-29 Analog Front End/Line Driver
(AFE/LD) is capable of driving the high line-power EPAP
modes for payload rates of 768; 1,544; 2,048 and 2,304
Kbps, as specified by the G.shdsl standard.
>




 M28945
M28945 Diagram
Product Features
• 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)
- 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 CABGA;
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, and +3.3 V
• JTAG boundary scan
• Operation over full industrial
temperature 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 pair
gain 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
www.mindspeed.com/salesoffices
General Information: (949) 579-3000
Headquarters – Newport Beach
4000 MacArthur Blvd., East Tower
Newport Beach, CA 92660-3007
28945-BRF-001-A M03-0763
© 2002 Mindspeed Technologies, a Conexant business. All rights reserved. Mindspeed
and the Mindspeed logo are trademarks of Mindspeed Technologies. All other
trademarks are the property of their 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










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