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CMX850-1

Communications Controller IC

CML Microsystems Plc 

CMX850 Communications Controller IC

INNOVATIONS

INV/Telecom/850/2 November 2003

- Single-Chip Embedded 80C51 µC with Integral V.22bis Modem -

www.cmlmicro.com

Further enhancement of this product has resulted in a group of additional functions which enable the use of the product in a much larger range of wireline telecom

end-products. This updated Innovations document details the functions and features of the CMX850 and the product enhancements.

- this highly integrated product removes the need, in a communications end-product, for multiple ICs and their attendant components -

Enhanced 80C51 µC with Internal Memory

n Extended Memory Addressing

n Versatile Memory and Peripheral Interfacing

n 8kB Internal XRAM

n ‘Real-Time’ Clocks and Timing Facilities

n Dynamic In-Circuit Programming and

Software Upgrading in the Field via Boot

ROM Facility

n Low Power ‘Sleep’ Modes with Programmable

Wakeup

Integral Low-Power Modem plus . . .

n Integral V.22bis, V.22, V.23 and V.21 (and Bell)

Modems

n Stand-Alone FSK (CLI) Demodulator and High-

Sensitivity CAS Tone Detector

n Full-Feature Programmable Telephone Signalling Facilities

Applications - Low power and battery-operated

communications terminals which need to access the PSTN

to upload or download data

n SMS and ADSI Terminals

n Telemetry and Remote Meter Reading

n Vending and Gaming Machines

n Feature Phones, Smart Phones and Pay Phones

n Telephone Routers

n SIA Security Alarms

n EPOS and ATM Terminals

n E-mail and Internet Appliances

with

Stand-Alone

FSK

(CLI)

Demod

CMX850

Communications

Controller

Enhanced

On-Chip Boot ROM

Facilities

Configurable Tx DTMF Twist

CTR21 and FCC68

Line Interface (DAA)

Designs

- V.22bis Modem - Wireline Signalling - Embedded 80C51 µController - CLI Demodulator - On-Chip RAM -

- Versatile General Purpose I/O Ports - Boot ROM Reprogramming Feature - 100-pin LQFP Package -

- 3V Low-Power Operation with Advanced Dynamic Power Management and Powersave Modes -

EV8500

Evaluation

Kit

- A single-chip product that provides ALL the functions required (data, memory, signalling, switching and control) for

stand-alone wireline telecoms terminals -

CML Microcircuits

COMMUNICATION SEMICONDUCTORS Application Specific Standard Products for Wireline Telecoms, Two-Way Radio and Wireless Data

Wireline

Telecoms

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