CMX208 View Datasheet(PDF) - MX-COM Inc

Part Name

Description

Manufacturer

CMX208

ISDN Dual Telephony Protocol Engine

MX-COM Inc  

COMMUNICATION ICs

DATA BULLETIN

Features

• Supports ITU Specifications 1

• Supports Incoming and Outgoing Calls

• Independent Port Configuration

• Supports CTR3 Approval

• Full API Available

CMX208

ISDN Dual Telephony

Protocol Engine

Advance Information

Applications

• Feature Phones

• Pay-Phones

• PABX Telephones

• Reference Designs Available

S/T Interface

AM79C30

S/T BUS

Controller

+ Codec

Parallel BUS

IOM2 BUS

CMX208

CLI

CMX605

DTMF Rx

Motorola

MC145480

PCM Codec

SA

L

I

POTS 2

CB

DTMF Rx

CLI

CMX605

SA

L

I

POTS 1

CB

The CMX208 is an ISDN telephony protocol engine which implements the lower level ISDN interface and

communicates with the CMX605 and other standard devices to form a fully integrated ISDN chipset for voice

communications. The CMX208 puts all the main data processing elements in a single device. No ISDN

software has to be written and simple ‘Plug and Play’ design results. This reduces development time and

provides a highly cost-effective hardware solution. By using proven circuit designs, the designer can move

quickly from initial concept through design in to manufacture.

The CMX208 supports two voice ports over the ISDN Line, which can be used to provide ISDN telephony

services or POTS line interfaces, and has independent keypad-configuration of these services for each port.

The CMX208’s feature set and architecture allow most analog systems to be converted to an ISDN equivalent

with enhanced features.

The CMX208 is designed to work with the AMD 79C30 S/T bus interface, the Siemens PSB-21525 HDLC

formatter, the Motorola MC145480 PCM codec and the MX-COM CMX605 POTS interface circuit, and also

comes complete with embedded applications software. To support the CMX208, MX-COM can also provide

licensed reference designs on user request. A flexible Applications Program Interface (API) allows users to

customize the features and operation of their own design. The CMX208 is available in an 80-pin QFP

(CMX208S1) package.

1 The CMX208 is a data processor integrated circuit that supports the protocol layers 1, 2 and 3 of the ISDN protocol stack in accordance

with the specifications of CCITT (now ITU). These specifications, which are widely used around the world, might not be supported within

the U.S.

MX-COM, Inc

4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA

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

All trademarks and service marks are held by their respective companies

2000 MX-COM, Inc.

Doc. # 20480214.001

2000 Chiron Technology Limited

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