SI2439-A-FM Silicon Laboratories Inc, SI2439-A-FM Datasheet

SI2439-A-FM

Manufacturer Part Number

SI2439-A-FM

Description

SI2439-A-FM

Manufacturer

Silicon Laboratories Inc

Datasheet

1.SI2439-A-FM.pdf (70 pages)

Specifications of SI2439-A-FM

Lead_time

Pack_quantity

364

Comm_code

85423990

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V. 92

Features



Applications



Description

The Si2494/39 ISOmodem is a full-featured ITU V.92/V.34-compliant modem that

provides connect rates of up to 56 kbps, full-duplex, over the public switched

telephone network (PSTN). Offered as a chipset with the Si2494/39 system-side

device and the Si3018 line-side device, the ISOModem utilizes Silicon

Laboratories’ patented direct access arrangment (DAA) technology to provide a

programmable telephone line interface with an unparalleled level of integration.

This compact solution eliminates the need for a separate DSP, modem controller,

codec, transformer, relay, opto-isolators, clocking crystal, and 2-4 wire hybrid. The

addition of the Si3000 voice codec supports a voice handset and/or full-duplex

speakerphone. Voice pass-through with optional compression supports tapeless

answering machine, music-on-hold, voice menus, etc. The Si2494/39 is ideal for

embedded modem applications due to its flexibility, small footprint, and minimal

external component count.

System Block Diagram

Rev. 1.0 7/11

Data modem formats



Type I and II caller ID decode

No external ROM or RAM required

UART, SPI, or parallel interface

Flexible clock options



Integrated DAA



AT command set support

SMS / MMS support

Firmware upgradeable

Point-of-sale terminals

Security

Host

CPU

ITU-T, Bell

300 bps up to 56 kbps

V.21,V.22, V.29 Fast Connect

V.44, V.42, V.42bis, MNP2-5

Automatic rate negotiation

V.92 PCM upstream

V.92 Quick connect

V.92 Modem on hold

Low-cost 32.768 kHz oscillator

4.915 MHz oscillator

27 MHz clock input

Over 6000 V capacitive isolation

Parallel phone detect

Globally-compliant line interface

Overcurrent detection

A N D

Host Interface



UART

SPI

Parallel

V.34 ISO

System

Si2494

Side

Isolation Barrier

Capacitive

M ODE M

Si3018



Line

Side

EEPROM interface

Commercial or industrial

temperature range

DTMF detection/generation

Si3000 Voice Codec Interface



Voice pass through with

compression



Full-duplex speakerphone

support



Medical

Remote monitoring

speaker, and/or handset

limiters, and sidetone

4790 and other voice

standards

answering machine, music

on hold, voice menus, etc

Hardware support for mic,

Programmable voice filters,

Supports TBR-38, TIA/EIA-

Supports telephone

Line echo cancellation

Acoustic echo cancellation

Global

BOM

DAA

W I T H

Telco

Tip

Ring

LOBAL

CLKOUT

FSYNC

EESDO

GPIO1

those chipset combinations listed

EESDI

VREG

EECS

GND

VDD

SDO

This data sheet is valid only for

N/C

SDI

VREG

RNG1

Si2494/39

Ordering Information

DCT

C1B

C2B

Pin Assignments

DAA

37 36 35 34 33 32

Si2494/39

on page 59.

5 x 7 mm

Si3018

QFN

DCT2

IGND

DCT3

QE2

VREG2

RNG2

GPIO25, D3

GPIO24, D4

ESC, D5

DCD, D6

N/C

VDD

GND

RTS, SS, D7

TXD, MOSI, WR

RXD, MISO, RD

CTS, SCLK, CS

GPIO11, A0

Si2494/39

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