RC224ATLV Datasheet

IC型號：
RC224ATLV
PDF描述：
EmbeddedModem Family
文件大?。?/label>
1031.61KB
PDF頁數(shù)：
104頁
芯片廠家：
CONEXANT

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RC224ATL/224ATLV

EmbeddedModem Family

The new Conexant RC224ATL utilizes a new integrated data pump/controller to allow

the device to directly connect to host processors that are 3.3 V I/O capable. The codec

used in the new part is the same as the codec used in the existing RC224ATL. The

new device is form, fit, and function compatible with the existing device. This means

there are no hardware and software differences between the existing and the new part,

with one exception. The 3.3 V I/O capable part incorporates 3.3 V compatible digital

I/O buffers, hence requiring 3.3 V digital supply instead of 5 V digital supply.

In addition, unlike the current version of RC224ATL, the new part provides both

data and fax capabilities.

Data modes, controlled by an industry standard 2400 AT command set, can

transmit and receive up to 2400 bps.

Fax modes, controlled by a built-in EIA-578 Class 1 command interface, provide

Group 3 transmit and receive functions.

Distinguishing Features

鈥?/div>

Data modes

鈥?CCITT V.22 bis (2400 bps), V.22

(1200 bps)

鈥?Bell 212A (1200 bps) and 103

(300 bps)

鈥?Enhanced AT commands

Group 3 fax modes

鈥?V.29 (9600/7200 bps) transmit

鈥?V.27 ter (4800/2400 bps)

transmit and receive

鈥?V.21 Channel 2 (300 bps)

transmit and receive

EIA-578 Service Class 1 commands

V.42/MNP2-4 and V.42 bis/MNP 5

can be supported through host

software without additional hardware

Data/fax discriminator and auto

answering

Communications software

compatible

Integrated call progress and dialing

No external microcomputer or

memory required

Parallel or serial asynchronous DTE

interface

A/A1 relay control

NVRAM interface allows storage of

two user configurations and four

36-digit dial strings

Automatic adaptive/fixed

compromise equalization

Programmable sleep mode and

wake-up

Full-duplex data mode test

capabilities: Analog loop, local digital

loop, and remote digital loop

Half-duplex fax mode test capabilities

Automatic format/speed sensing

Low power consumption (typical)

鈥?Operating: 100 mW

鈥?Sleep鈥擨dle: 25 mW

鈥?Sleep鈥擲top: 5 mW

Single +5 V power supply or Dual

+ 3.3 VDD and + 5 VAA power

supplies

Package options:

鈥?68-pin plastic leaded chip carrier

(PLCC)

鈥?100-pin plastic quad flat pack

(PQFP)

鈥?/div>

Functional Block Diagram

鈥?/div>

Modem

Data Pump

Telephone

Line

Interface

鈥?/div>

Modem

LED

Indictors

V.24

EIA-232-D

Interface

Modem

Controller

鈥?/div>

Optional

NVRAM

Optional

Speaker

鈥?/div>

Crystal

鈥?/div>

Data Sheet

D224ATLVDSC

March 25, 1999

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