CMX850-1 データシートの表示（PDF） - CML Microsystems Plc

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CMX850-1

Communications Controller IC

CML Microsystems Plc 

The CML Advantage

- Save Time - Save Space - Save Money - Save Power -

An extremely compact and low-power microcircuit that will satisfy all of the communications, control, data and signalling requirements of any wireline product using on-line communication

n Highly integrated single product replaces multiple ICs and components

n Enhanced 80C51 µController with WDT, ADC, 8kB XRAM, keyboard encoder, extended addressing

of multiple blocks (64kB) of external memory, PWM outputs and dual clocks with separate Xtals

n On-Chip Boot ROM facility available for in-circuit programming and software upgrading in the field

n Integral modem: V.22bis, V.22, V.23, V.21 and Bell equivalents

n Easy integration with peripherals (Flash, ROM, RAM, LCD circuits and keyboard)

n 13 interrupt sources

n Rx/Tx audio-tone telephone signalling including DTMF function

n Programmable Tx DTMF Twist to facilitate operation to many telephone systems and for use in

lower-cost DAA circuits

n Line reversal, ring-tone and off-hook detection

n Improved sensitivity CAS tone detection and stand-alone FSK demodulator for CLI Types I and II will

allow on-hook CLI operations whilst all other functions are in powersave

n Low voltage (3.0 to 3.6 V) operation with comprehensive on-chip power management

n CMX850L8 100-pin low profile, small footprint quad flat pack (LQFP) package saves PCB space

n Compact multi-function product saves design and production time and costs

n CML support is available globally for design and implementation assistance

n EV8500 EvKit aids experimentation and product evaluation; accelerates

hardware and software design times

n CTR21 and FCC68 DAA interface designs available from CML website

With

DAA

(info available)

ROM /

FLASH

CMX850

Keyboard

Measurement

and

Control

3V

Power

Supply

LCD

Driver

LC

Display

- OR - Withou+ R+tAM

+

WDT

DAA

Modem

µC

CMX850

+

ADC

+

PWM

Measurement

and

Control

+

Xtal

Select

Power

Supply and

Circuitry

ROM /

FLASH

+

Keyboard

Driver

LCD

Driver

LC

Display

Keyboard

Typical Control and Monitoring System employing the CMX850

[reduced chip and component count, integrated software

and much lower power and PCB requirement]

Typical Control and Monitoring System

[high chip and component count, high power and PCB requirement,

diverse software load]

Contents

The CML Advantage 2 Functional Block Diagram 3 Embedded Microcontroller 4 Integral Low Power Modem 5 CMX850 in Action 6

Demonstration, Design, Evaluation, Investigation and Implementation 7 Wireline Telecoms Products 8

2

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