28945-BRF-001-A_15 Datasheet, PDF(1/2 Page) M/A-COM Technology Solutions, Inc.

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28945-BRF-001-A_15 Datasheet, PDF (1/2 Pages) M/A-COM Technology Solutions, Inc. – Embedded Microprocessor

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A CONEXANT BUSINESS

ZipWirePlusâ¢ G.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 Technologiesââ¢ market-

leading ZipWireâ¢ transceivers through operation in 2B1Q

multi-rate mode. The 2B1Q mode supports AutoBaudâ¢

for SDSL interoperability, rate optimization and fast

connect times. The ZipWirePlus also supports

Mindspeedâs 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 ZipWirePlusâs integrated T1/E1 framer supports two

PCM interfaces, each capable of managing up to 72

> 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.

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