CMX868AD2 Consumer Microcircuits Limited, CMX868AD2 Datasheet

CMX868AD2

Manufacturer Part Number

CMX868AD2

Description

SOP24

Manufacturer

Consumer Microcircuits Limited

Datasheet

1.CMX868A.pdf (47 pages)

Specifications of CMX868AD2

Date_code

09+

Available stocks

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Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CMX868AD2

Manufacturer:

Quantity:

3 000

Company:

Meier Automation Equipment Co., Limited

Part Number:

CMX868AD2

Manufacturer:

CML

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D/868A/3

Features

• V.22 bis 2400/2400 bps QAM

• V.22, Bell 212A 1200/1200 or 600/600 bps DPSK

• V.23 1200/75, 1200/1200, 75, 1200 bps FSK

• Bell 202 1200/150, 1200/1200, 150, 1200 bps FSK

• V.21 or Bell 103 300/300 bps FSK

• DTMF/Tones Transmit and Receive

• ‘Powersave’ Standby Mode

The CMX868A is a multi-standard modem for use in telephone based information and telemetry systems.

Control of the device is via a simple high speed serial bus, compatible with most types of µC serial

interface. The data transmitted and received by the modem is also transferred over the same serial bus.

On-chip programmable Tx and Rx USARTs meeting the requirements of V.14 are provided for use with

asynchronous data and allow unformatted synchronous data to be received or transmitted as 8-bit words.

A high-quality DTMF decoder with excellent immunity to falsing on voice and a standard DTMF encoder

are included. Alternatively, these blocks can be used to transmit and detect user-specific, programmed

single and dual-tone signals, call progress signals or modem calling and answering tones.

Flexible line driver and receive hybrid circuits are integrated on chip, requiring only passive external

components to build a 2 or 4-wire line interface.

The device also features a hook switch relay drive output and a Ring Detector circuit which continues to

function when the device is in the Powersave mode, providing an interrupt which can be used to wake up

the host µController when line voltage reversal or ringing is detected.

The CMX868A operates from a single 2.7 to 5.5V supply over a temperature range of -40°C to +85°C and

is available in 24-pin TSSOP, SOIC and DIP packages.

COMMUNICATION SEMICONDUCTORS

Brief Description

May 2008

CML Microcircuits

Applications

• Telephone Telemetry Systems

• Remote Utility Meter Reading

• Security Systems

• Industrial Control Systems

• Electronic Cash Terminals

• Pay-Phones

• Set-Top Boxes

V.22 bis Modem

CMX868A

Low Power

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