L9313 datasheet(1/40 Pages) AGERE

Part #	L9313

Description	Line Interface and Line Access Circuit Full-Feature SLIC and Ringing for TR-57 Applications

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Manufacturer	AGERE [Agere Systems]

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Data Sheet

September 2001

L9313 Line Interface and Line Access Circuit

Full-Feature SLIC and Ringing Relay for TR-57 Applications

Introduction

The Agere Systems Inc. L9313 is a combination full-

feature, ultralow-power SLIC, solid-state ringing

access relay, and line test matrix. It is part of a pin-

for-pin compatible family of devices designed to

serve a wide variety of applications. The L9313 is

optimized for TR-57 applications where forward and

reverse battery and ground start are required.

Features

SLIC

s

5 V and battery operation

s

Optional automatic battery switch

s

Seven operational modes

s

Appropriate for 58 dB longitudinal balance applica-

tions

s

Minimal external components required at all inter-

faces

s

Ultralow power dissipation

s

Software/hardware adjustable dc parameters and

supervision thresholds

s

Ground start compatible

Solid-State Ring Relay

s

Low impulse noise

s

Current-limited switches/thermal protection

Applications

s

Pair Gain

s

Digital Loop Carrier (DLC)

s

Central Office (CO)

s

Fiber-in-the-Loop (FITL)

Description

The L9313 electronic line interface and line access

circuit (LILAC) provides all the functions that are nec-

essary to interface a codec to the tip and ring of a

subscriber loop, integrating the battery feed and ring-

ing access relay in one low-power, low-cost package.

The L9313 requires a 5 V and battery supply to oper-

ate. Included is an automatic battery switch. The bat-

tery feed offers forward and reverse battery, on-hook

transmission, and ground start operational modes. It

also has a low-power scan and a disconnect mode.

In all operating states, this IC is designed for minimal

power dissipation. This device is designed to mini-

mize the number of external components required at

all interfaces.

The dc template, current limit, and overhead voltage

and loop supervision threshold are programmable via

an applied voltage source. The voltage source may

be an external programmable voltage source or

derived from the VREF SLIC output.

The integrated solid-state switch offers power ringing

access. Impulse noise is minimized, thus eliminating

the need for external zero-cross switching circuitry.

Similar Part No. - L9313

Manufacturer	Part #	Datasheet	Description
Agere Systems	L9310	1Mb / 60P	Line Interface and Line Access Circuit Full-Feature SLIC,Ringing Relay,and Test Access Device
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