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MT8888C

Receiver

Transmitter

Digital

DetectionAlgorithmand CodeConverter

High GroupFilter

Low GroupFilter

Delta SigmaD2A Converter

OutputAmp

DialToneFilter

TransmitTone Buffer Keypad

Microprocessor

OutputDTMF Tones

Audio In

DTMF ToneSelection

Output

Output

Output

Output

PRODUCTOVERVIEW

ANALOG SIGNAL PROCESSINGDTMF & CALLER ID

MT88E39 Simplifed Block Diagram

MT8888C

Signal Path

ReceiveBandpass

Filter

Dataand TimingRecovery

FSKModulator

CarrierDetect

BiasGenerator

InputAmp MicroprocessorSLIC

AudioInput

DataOut

DTMF

Zarlinks complete line o DTMF products oer 3 V or5 V operation, power-down modes, call progress tonedetection, parallel and serial microcontroller interace,adjustable tone guard-time and tone detect dynamicrange options. A new series o wide dynamic rangeDTMF receivers utilizing a lower cost and commonlyavailable color burst oscillator enable customers todecrease their overall BoM costs. Our DTMF devicesare well-suited or telephone answering machines, ax

machines and security systems.

MT8888C DTMF Transceiver

Monolithic DTMF transceiver with call progress flterReceiver section based on industry-standard MT8870DTMF receiver, transmitter utilizes a switchedcapacitor D/A converter or low distortion, highaccuracy DTMF signaling

Internal counters provide a burst mode that allowstone bursts to be transmitted with precise timing

Selectable call progress flter allows microprocessorto analyze call progress tones

Intel microinterace allows device to be connectedto a range o popular microcontrollers with minimalexternal logic

Caller ID

Zarlinks line o CNIC (Calling Number Identifcation Cir-cuit) devices support Type-1 and Type-2 CPE eatures,including VMWI (Visual Message Waiting Indicator),CND (Calling Number Delivery), CNAM (Calling NameDelivery), CIDCW (Calling Identity Delivery on CallWaiting) and ADSI (Analog Display Services Interace).

Applications include ull eature POTs and VoIP phones,axes, answering machines, caller ID adjuncts, and

DECT systems.

MT88E39 Calling Number Identifcation Circuit(CNIC1.1)

Integrated CNIC1.1 provides an interace to callingline inormation delivery services that utilize 1200baud Bell 202 or CCITT V.23 FSK data transmissionschemes

Receives and demodulates the FSK signal andoutputs the data into a simple dual mode 3-wire serialinterace, eliminating need or an UART

Bellcore, ETSI and NTT compatible and can operatein 3 V and 5 V applications

MT8888C Simplifed Block Diagram

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PRODUCTOVERVIEW

w w w . Z A R L I N K . c o m

Inormation relating to products and services urnished herein by Zarlink Semiconductor Inc. or its subsidiaries is believed to be reliable.The products, their specifcations, services and other inormation appearing in this publication are subject to change by Zarlink without notice.

ZARLINK, ZL, ZLE and the Zarlink logo are trademarks o Zarlink Semiconductor Inc.

2010, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number 10ZS059

CODECS

The MT8960-7 series o Voice Codecs integrate all unc-tionality necessary to encode/decode voice band analogsignals using Pulse Code Modulation (PCM). Thesecodecs are used in a variety o applications including,

converged PBXs, Central Ofces and digital telephones.

MT8960/1/2/3/4/5/6/7 Features

ST-BUS compatible

Meets AT&T D3/D4 and CCITT G711 and G712

-Law: MT8960/62/64/67, A-Law: MT8961/63/65/67

Digital Coding Options: CCITT Code and AlternativeCode

Digitally controlled gain adjust o both flters

Analog and digital loopback

Power-down mode available

2.048 MHz master clock input

Up to six uncommitted control outputs +/-V +/-5%power supply

ZL49200 Simplifed Block Diagram

MT9092

Telephony

DSP

HDLCTiming

Circuit

LCD

Driver

Serial

Port

Micro-

processor

Line

Interface

MT9172

New Call

Tone

Generator

Filter/

CODEC

Gain

Trans-

ducer

Interface

HandsetMicrophone/Speaker

MicroprocessorInterface

ST-Bus Data

ZL49200

CODEC

POTS

Relay

2-Wire to

4-wire

Conversion &

Line Impedance

Loop

Supervision

Over

Current

Protection

Sense

Tip Drive

Controller

Audio Gain &

Network Balance

Ring Drive

Controller

Relay

Driver

AudioInterface

RelayInterface

Tip/Ring

MT9092 Simplifed Block Diagram

ANALOG SIGNAL PROCESSINGCODECS & SLICs