Datasheet > AM79212JC

AM79212JC

更新时间： 2024-10-27 21:53:43

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
48页	465K
描述
Advanced Subscriber Line Interface Circuit

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数据手册

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AM79212JC 数据手册

Am79213/Am79C203/031

Advanced Subscriber Line Interface Circuit (ASLIC™) Device

Advanced Subscriber Line Audio-Processing Circuit

(ASLAC™) Device

— Digital I/O pins

DISTINCTIVE CHARACTERISTICS

— A-law/µ-law selection

Performs all of the functions of a codec-filter

Linear data available on PCM ports for custom

compression and expansion

Single channel architecture

Performs Battery-feed, Ring-trip, Signaling,

Coding, Hybrid and Test (BORSCHT) functions

Compatible with inexpensive protection

networks. Accommodates low tolerance fuse

resistorswhilemaintaininglongitudinalbalance

to Bellcore specifications.

Single hardware design meets multiple country

requirements through software programming

Standard microprocessor interface

Power/Service Denial state

Small physical size

Industry standard PCM interface with full-time

slot assignment

Integrated ring trip function

Monitoroftwo-wireinterfacevoltageandcurrent

for subscriber line diagnostics

Four relay drivers with built-in energy

absorption zener diodes

Low idle power per line

Synchronized ring relay operation: zero volts ac

on, zero current off

On-hook transmission

Only battery and +5 V supplies needed

SoftwareenabledNormalorAutomaticRing-Trip

state

Exceeds LSSGR and CCITT central office

requirements

On-chip 12 kHz and 16 kHz metering generation

with on and off meter pulse shaping

Off-hook and ground-key detectors with

programmable thresholds

Supports loop-start and ground-start signaling

Programmable line feed characteristics

independent of battery voltage

0°C to +70°C commercial operation guaranteed

by production testing

Built-in voice path test modes

–40°C to +85°C temperature range operation

available

Analog and digital hybrid balance capability

Adaptive hybrid balance capability

Linear power feed with power management and

thermal shutdown features

Abrupt and smooth polarity reversal

Power-cross detection in Ringing and Non-

ringing states

Software programmable

— DC loop feed characteristics and current limit

— Loop supervision detection thresholds

— Off-hook detect debounce interval

— Two-wire AC impedance

— Transhybrid balance

— Transmit and receive gains

— Equalization

Publication# 080160 Rev: D Amendment: /0

Issue Date: April 2000

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