AM79M535-2JC AMD [Advanced Micro Devices], AM79M535-2JC Datasheet

AM79M535-2JC

Manufacturer Part Number

AM79M535-2JC

Description

Metering Subscriber Line Interface Circuit

Manufacturer

AMD [Advanced Micro Devices]

Datasheet

1.AM79M535-2JC.pdf (18 pages)

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Am79M535

Metering Subscriber Line Interface Circuit

DISTINCTIVE CHARACTERISTICS

BLOCK DIAGRAM

Notes:

1. Am79M535—E0 and E1 inputs; ring relay driver sourced internally to BGND; ground-key filter pin.

2. Current gain (K

B(RING)

Programmable constant-current feed

Line-feed characteristics independent of

battery variations

Programmable loop-detect threshold

On-chip switching regulator for low-power

dissipation

Pin for external ground-key noise filter

capacitor available

A(TIP)

BGND

VREG

VBAT

HPA

HPB

) = 1000.

Two-Wire

Interface

CHS

Switching Regulator

Signal Transmission

Ground-Key

Power-Feed

Controller

Detector

QBAT

CHCLK

Ground-key detect

Two-wire impedance set by single external

impedance

Performs polarity reversal

Tip Open state for ground-start lines

Supports 2.2 Vrms metering (12 and 16 kHz)

On-hook transmission

VCC

Ring-Trip Detector

Ring Relay Driver

Off-Hook Detector

Input Decoder

and Control

VEE

Publication# 16856 Rev: E

Issue Date: October 1999

AGND

RINGOUT

GKFIL

16856B-001

DET

VTX

RSN

RDC

Amendment: /0

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