Datasheet > AM79514

AM79514

更新时间： 2024-11-26 22:22:23

品牌	Logo	应用领域
超微 - AMD		/
页数	文件大小	规格书
18页	778K
描述
Subscriber Line Interface Circuit

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中文翻译

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数据手册

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AM79514 数据手册

Am79514

Subscriber Line Interface Circuit

DISTINCTIVE CHARACTERISTICS

■ Programmable constant-current feed

■ Programmable loop-detect threshold

■ Line feed characteristics independent of

battery variations

■ Two-wire impedance set by single external

■ On-chip switching regulator for low-power

impedance

dissipation

■ Tip Open state for ground-start lines

■ Ring and test relay drivers

■ On-hook transmission

■ Polarity reversal feature

■ Optimized for –60 V battery

BLOCK DIAGRAM

Test Relay Driver

Ring Relay Driver

TESTOUT

RINGOUT

A(TIP)

Ground-Key

Detector

Input Decoder

and Control

HPA

HPB

DET

Two-Wire

Interface

VTX

RSN

Signal

Transmission

Off-Hook

Detector

B(RING)

Power-Feed

Controller

RDC

Ring-Trip

Detector

VREG

Switching

Regulator

VBAT

BGND

VCC

CHS QBAT CHCLK

VEE AGND/DGND

Publication# 18411 Rev: D Amendment: /0

Issue Date: October 1999

12 3 4 5 6 7...18

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