73K224L-28IH/F TERIDIAN [Teridian Semiconductor Corporation], 73K224L-28IH/F Datasheet

73K224L-28IH/F

Manufacturer Part Number

73K224L-28IH/F

Description

Single-Chip Modem

Manufacturer

TERIDIAN [Teridian Semiconductor Corporation]

Datasheet

1.73K224L-28IHF.pdf (31 pages)

Current page: 1 of 31
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Simplifying System Integration™

DESCRIPTION

The 73K224L is a highly integrated single-chip

modem IC which provides the functions needed to

construct a V.22bis compatible modem, capable of

2400 bit/s full-duplex operation over dial-up lines. The

73K224L offers excellent performance and a high

level of functional integration in a single 28-pin DIP

package. This device supports V.22bis, V.22, V.21,

Bell 212A and Bell 103 modes of operation, allowing

both synchronous and asynchronous communication.

The 73K224L is designed to appear to the systems

designer as a microprocessor peripheral, and will

easily

microprocessors (80C51 typical) for control of modem

functions through its 8-bit multiplexed address/data

bus or via an optional serial control bus. An ALE

control line simplifies address demultiplexing. Data

communications normally occur through a separate

serial port. The 73K224L is pin and software

compatible with the 73K212L and 73K222L single-

chip modem ICs, allowing system upgrades with a

single component change.

The 73K224L operates from a single +5V supply for

low power consumption.

The 73K224L is ideal for use in either free-standing or

integral system modem products where full-duplex

BLOCK DIAGRAM

Page: 1 of 31

TXD

RXD

SERIAL

8-BIT

BUS

I/F

interface

with

DEBUFFER

BUFFER

popular

SCRAMBLER

DE-

2005, 2008 TERIDIAN Semiconductor Corporation

single-chip

DECODER

QUADBIT

DIBIT/

(continued)

ENCODER

QUADBIT

DIBIT/

MODULATOR

TONE DETECTION

PROCESSOR

FSK

FUNCTIONS

SHAPER

RECEIVE

PULSE

DIGITAL

SIGNAL

FIR

FEATURES

•

V.22bis, V.22, V.21, Bell 212A, 103

MODULATOR

One-chip multi-mode V.22bis/V.22/V.21 and Bell

212A/103 compatible modem data pump

FSK (300 bit/s), DPSK (600, 1200 bit/s), or QAM

(2400 bit/s) encoding

Pin and software compatible with other TERIDIAN

Semiconductor

modems

Interfaces directly with standard microcontrollers

(80C51 typical)

Parallel microcontroller bus for modem control and

status monitoring functions

Selectable

buffer/debuffer

functions

All synchronous and asynchronous operating

modes (internal, external, slave)

Adaptive equalization for optimum performance

over all lines

Programmable transmit attenuation (16 dB, 1 dB

steps), selectable receive boost (+18 dB)

Call progress, carrier, answer tone, unscrambled

mark, S1, and signal quality monitors

DTMF, answer and guard tone generators

Test modes available: ALB, DL, RDL, Mark, Space,

Alternating bit, S1 pattern

CMOS technology for low power consumption

(typically 100 mW @ 5V) with power-down mode

(15 mW @ 5V)

TTL and CMOS compatible inputs and outputs

QAM/

DPSK

A/D

FILTER

DEMOD

FIXED

GENERATOR

ANSWER,

GUARD &

EQUALIZER

CALLING

DTMF,

TONE

EQUALIZER

asynch/synch

DATA SHEET

Corporation

Single-Chip Modem

and

AGC

FILTER

scrambler/descrambler

ATTEN

GAIN BOOST

K-Series

with

73K224L

JUNE 2008

FILTER

internal

Rev 7.1

1-chip

TXA

RXA

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