MX860D6 데이터 시트보기 (PDF) - MX-COM Inc

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MX860D6

Telephone Signaling Transceiver

MX-COM Inc  

COMMUNICATION SEMICONDUCTORS

DATA BULLETIN

Features

• V.23 1200/75bps FSK Transmit and Receive

• DTMF/Tones Transmit and Receive

• Line & Telephone Complementary Drivers

• Call Progress Decoder

• CAS Tones Detection and Generation

• Simple ‘C-BUS’ Serial Interface

• Low Power Operation

• ‘Powersave’ Standby Mode

CMX860

Telephone Signaling

Transceiver

ADVANCE INFORMATION

Applications

• Least Cost Routers

• Vending Machines

• Alarm Systems

• Home Management Systems

• Remote Meter Reading

• Internet Appliance Applications

• Cable TV Set-Top Boxes

• Advanced Feature Phones

LINE

LINE

INTERFACE

PHONE

PHONE

INTERFACE

TX USART / FSK MODULATOR

& TONE / DTMF GENERATOR

RX USART / FSK RECEIVER

CALL PROGRESS, CAS &

ANSWER TONE DETECTOR

DTMF DECODER

RING DETECTOR

HOOK DETECTOR

RELAY DRIVER

CMX860

'C-BUS'

SERIAL

INTERFACE

HOST

µC

The CMX860 is a flexible, low power Telephone Signaling Transceiver IC designed for use in a wide range of

line-powered telephone equipment.

The IC combines the functions of a DTMF encoder and decoder, V.23 modulator and demodulator plus call

progression circuitry with analog switching between line and phone interfaces. Ring detection, local phone off-

hook detection, and a relay for line hook-switch operation are also provided under the control of C-BUS. The

ring and hook detectors operate while the remainder of the IC is powersaved, generating an interrupt to wake-

up the host µC when further processing or signaling is required.

All on-chip functions and switching arrangements are controlled via a serial bus (C-BUS). The CMX860 is

designed to operate at 2.7V and utilizes MX-COM’s low power DTMF decoder and V.23 modem technology.

The CMX860 is available in 28-pin SSOP (CMX860D6) and 28-pin SOIC (CMX860D1) packages.

¤2000 MX-COM, Inc.

www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054

Doc. # 20480222.001

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies.

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