LUCL9216AGF-D AGERE [Agere Systems], LUCL9216AGF-D Datasheet

LUCL9216AGF-D

Manufacturer Part Number

LUCL9216AGF-D

Description

Short-Loop Ringing SLIC with Ground Start

Manufacturer

AGERE [Agere Systems]

Datasheet

1.LUCL9216AGF-D.pdf (48 pages)

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Introduction

The Agere Systems Inc. L9216 is a subscriber line

interface circuit (SLIC) that is optimized for short-

loop, power-sensitive applications. This device pro-

vides the complete set of line interface functionality,

including power ringing needed to interface to a sub-

scriber loop. This device has the capability to operate

with a V

minimize external components required at all device

interfaces.

Features

L9216A/G

Short-Loop Ringing SLIC with Ground Start

Onboard ringing generation

Three ringing input options:

— Sine wave

— PWM

— Logic level square wave

Flexible V

— 5 V or 3.3 V V

— No –5 V required

Battery switch to minimize off-hook power

Eight operating states:

— Scan mode for minimal power dissipation

— Forward and reverse battery active

— On-hook transmission states

— Ground start (tip open)

— Ring mode

— Disconnect mode

Ultralow on-hook power:

— 27 mW scan mode

— 41 mW active mode

Two SLIC gain options to minimal external compo-

nents in codec interface

Loop start, ring trip, and ground start detectors

Software-controllable dual current-limit option

28-pin PLCC package

48-pin MLCC package

supply of 3.3 V or 5 V and is designed to

options:

Applications

Description

This device is optimized to provide battery feed, ring-

ing, and supervision on short-loop plain old tele-

phone service (POTS) loops.

This device provides power ring to the subscriber

loop through amplification of a low-voltage input. It

provides forward and reverse battery feed states, on-

hook transmission, a low-power scan state, ground

start (tip open), and a forward disconnect state.

The device requires a V

ing signal is derived from the high-voltage battery. A

battery switch is included to allow for use of a lower-

voltage battery in the off-hook mode, thus minimizing

short-loop off-hook power.

Loop closure, ring trip, and ground start detectors are

available. The loop closure detector has a fixed

threshold with hysteresis. The ring trip detector

requires a single-pole filter, thus minimizing external

components required.

The dc current limit is set and fixed by a logic control-

lable pin. Ground or open is applied to this pin set the

current limit at the low or high value.

The device is offered with two gain options. This

allows for an optimized codec interface, with minimal

external components regardless of whether a first-

generation or a programmable third-generation

codec is used.

Voice over Internet Protocol (VoIP)

Cable Modems

Terminal Adapters (TA)

Wireless Local Loop (WLL)

Telcordia Technologies

Network Termination (NT)

Key Systems

may be either a 5 V or a 3.3 V supply. The ring-

™

Preliminary Data Sheet

and battery to operate.

GR-909 Access

September 2001

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