LUCL9500AGF-DT datasheet(1/32 Pages) AGERE

部件名	LUCL9500AGF-DT

功能描述	High-Voltage Ringing SLIC for VolP Applications

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制造商	AGERE [Agere Systems]

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Preliminary Data Sheet

September 2001

L9500A

High-Voltage Ringing SLIC for VoIP Applications

L9500A Introduction

The Agere Systems Inc. L9500A is a subscriber line

interface circuit that is optimized for short-loop,

power-sensitive applications. This device provides

the complete set of line interface functionality (includ-

ing power ringing) needed to interface to a subscriber

loop. This device has the capability to operate with a

VCC supply of 3.3 V or 5 V and is designed to mini-

mize external components required at all device

interfaces. This device is optimized to interface to

data over cable service interface specification (DOC-

SIS) compliant cable modem gateway, multi-media

adaptor, and residential gateway products, such as

the

Broadcom® BCM3351, BCM3352, BCM6352,

and BCM1101 and equivalent products.

Features

s

Differential ringing and codec interface

s

Onboard ringing generation

s

Three ringing input options:

— Sine wave

— PWM

— Logic level square wave

s

Flexible VCC options:

— 5 V or 3.3 V VCC

— No –5 V required

s

Battery switch to minimize off-hook power

s

Eight operating states:

— Scan mode for minimal power dissipation

— Forward and reverse battery active

— On-hook transmission states

— Ground start

— Ring mode

— Disconnect mode

s

Ultralow on-hook power:

— 27 mW scan mode

— 38 mW active mode

s

Loop start, ring trip, and ground start detection

s

Software-controllable dual current limit option

s

28-pin PLCC package

s

48-pin MLCC package

Applications

s

Interface to

Broadcom:

— BCM3351 Cable Modem

— BCM3352 Cable Modem

— BCM6352 Integrated Multi-Media Adaptor

— BCM1101 Residential Gateway

s

Cable Modem

s

Voice over Internet Protocol (VoIP)

s

Voice over DSL

s

Remote Subscriber Units

s

Broadband Wireless

s

Short Loop Access

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 VCC and battery to operate.

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

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.

Ring mode overhead is collapsed, allowing rail-to-rail

operation. In this manner, the L9500 can operate

from a lower 75 V battery to minimize critical power

consumption and at the same time extend subscriber

ringing loop lengths to 500

Ω and beyond.

Loop closure, ring trip, and ground start detection is

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 applied to this pin sets the

current limit at the low or high value.

The device is offered with differential ringing and

receive input, making it ideal for direct interface to

DOCSIS compliant cable modem gateway products.

类似零件编号 - LUCL9500AGF-DT

制造商	部件名	数据表	功能描述
Agere Systems	LUCL9214AA-DT	790Kb / 46P	Low-Cost Ringing SLIC October 2001
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	LUCL9214AAU-D	790Kb / 46P	Low-Cost Ringing SLIC October 2001
	LUCL9214ARG-D	790Kb / 46P	Low-Cost Ringing SLIC October 2001

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