Datasheet > MT8843

MT8843

更新时间： 2024-09-29 22:45:51

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
10页	119K
描述
CMOS Calling Number Identification Circuit 2 Preliminary Information

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MT8843 数据手册

CMOS

MT8843

Calling Number Identification Circuit 2

Preliminary Information

ISSUE 1

February 1995

Features

•

Compatible with British Telecom (BT) SIN227 &

Ordering Information

SIN242, Cable Television Association (CTA)

TW/P&E/312, and Bellcore TR-NWT-000030 &

SR-TSV-002476

MT8843AE

MT8843AS

-40 °C to +85 °C

24 Pin Plastic DIP

24 Pin SOIC

•

Ring and line reversal detection

Description

Bellcore "CPE Alerting Signal (CAS)" and BT

"Idle State Tone Alert Signal" detection

The MT8843 Calling Number Identification Circuit 2

(CNIC2) is a low power CMOS integrated circuit

intended for receiving physical layer signals

transmitted according to BT (British Telecom)

SIN227 & SIN242, CTA (Cable TV Association) TW/

P&E/312 and Bellcore TR-NWT-000030 & SR-TSV-

002476 specifications.

•

1200 baud BELL 202 and CCITT V.23

Frequency Shift Keying (FSK) demodulation

•

High input sensitivity

Dual mode 3-wire data interface

Low power CMOS with powerdown mode

Input gain adjustable amplifier

Carrier detect status output

The CNIC2 provides all the features and functions

offered by Mitel’s MT8841 (CNIC), including 1200

baud BELL 202 and CCITT V.23 FSK demodulation.

The 3-wire serial FSK interface provided by CNIC

has been enhanced to operate in two modes. The

first mode is the CNIC compatible mode whereby

data transfer is initiated by the device. The new,

second mode allows a microcontroller to extract 8-bit

data words from the device. Furthermore, CNIC2

offers Idle State Tone Alert Signal and line reversal

detection capability for BT’s CLIP, ring burst

detection for CTA’s CLIP, and ring detection for

Bellcore’s CID.

Uses 3.58 MHz crystal or ceramic resonator

Applications

•

BT Calling Line Identity Presentation (CLIP),

CTA CLIP, and Bellcore Calling Identity Delivery

(CID) systems

•

Feature phones, including Analog Display

Services Interface (ADSI) phones

•

Phone set adjunct boxes

FAX and answering machines

Database query and Computer Telephony

Integration (CTI) systems

MODE

FSKen

IN+

DCLK

DATA

FSK

Demodulator

Anti-alias

Data Timing

Recovery

FSK Bandpass

Filter

IN-

Filter

To internal

cct.

Carrier

Detector

Bias

Generator

VRef

Interrupt

Generator

INT

CAP

PWDN

Alert Signal High

Tone Filter

StD

Guard

Time

Tone

Detection

Algorithm

St/GT

To internal cct.

Alert Signal Low

Tone Filter

ESt

Oscillator

VDD

VSS

OSCin OSCout TRIGin

TRIGRC

TRIGout

Figure 1 - Functional Block Diagram

5-21

12 3 4 5 6 7...10

中文翻译

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与MT8843相关器件

型号	品牌	获取价格	描述	数据表
MT8843AE	MITEL	获取价格	CMOS Calling Number Identification Circuit 2 Preliminary Information
MT8843AS	MITEL	获取价格	CMOS Calling Number Identification Circuit 2 Preliminary Information
MT8860	MITEL	获取价格	DTMF DECODER
MT8860AC	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, CDIP18,
MT8860AE	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, PDIP18,
MT8860XC	MITEL	获取价格	DTMF DECODER
MT8860XC	ZARLINK	获取价格	DTMF Signaling Circuit, CMOS, CDIP18,
MT8860XE	MITEL	获取价格	DTMF DECODER
MT8865	MITEL	获取价格	DTMF Filter
MT8865AC	MICROSEMI	获取价格	DTMF Signaling Circuit, CMOS, CDIP16,

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