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STLC61255

June 2004

This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

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MAIN FEATURES

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Support for 12 independent ports.

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Low power consumption

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Category II Functionality: Trellis coding and

Echo cancellation

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Flexible bin assignment: Supports ADSL over

POTS, ADSL over ISDN, all digital loop and

overlapping spectra.

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TC layer supporting: ATM TC

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No external memory needed for Interleave

memory nor modem SW

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No real time requirements from the controller

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Each modem can be different phase (startup/

Showtime) independently of other modems

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Package: PBGA676 27x27mm

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0.13um CMOS technology

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1.2V core logic supply (3.3V for I/O)

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-40ºC to +85ºC operation

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DESCRIPTION

The STLC61255 twelve channels ADSL Transceiver

is the key component for Asymmetrical Digital Sub-

scriber Line (ADSL) Central Office modem imple-

mentation. The highly integrated device supports

category II ADSL functionalities, including trellis cod-

ing and echo cancellation. The device embodies 6 in-

dependent dual transceivers optimized for Central

Office operation, with bit rates of up to 3.0 Mbps up-

stream and 24 Mbps downstream. This device is ide-

al for power and area sensitive Central Office

equipment, providing highest performance and den-

sity while meeting all telecom grade equipment re-

quirements. The STLC61255 is designed for minimal

host controller intervention during runtime operation.

Combining this feature with additional management

interfaces such as the serial host interface and the In-

band Utopia management interface provides many

alternatives for designs that significantly reduce op-

eration complexity and cost. Cost saving can be

achieved by using a singe low-cost controller to sup-

port high-density line-cards, saving the need for on-

board flash memory or even the entire host proces-

sor environment. The STLC61255 host interface pro-

vides a full sup-port of the ADSL MIB, and a rich set

of statistic information and programmable fault

alarms.

DATA BRIEF

12 CHANNEL DMT ADSL DATA PUMP

Figure 1. Package

Table 1. Order Codes

Part Number

Package

STLC61255

PBGA676

PBGA676 (27 x 27mm)