STW5094 datasheet(2/37 Pages) STMICROELECTRONICS

2 / 37 page

STw5094

2/37

APPLICATIONS:

CDMA,GSM,DCS1800,PCS1900,JDC DIGITAL

CELLULAR TELEPHONES WITH MP3 AND

FM RADIO STEREO LISTENING FUNCTIONS.

PORTABLE DEVICES WITH A STEREO

DIGITAL AUDIO SOURCE AND FM RADIO

LISTENING FUNCTION.

GENERAL DESCRIPTION

STw5094 is a low power Stereo Audio DAC device

with Headphones Amplifiers for high quality MP3 and

FM radio listening. The STw5094 includes also an

high performance

low power

combined

PCM

CODEC

⁄ FILTER tailored to implement the audio

front-end

functions

required

low voltage

low power consumption digital cellular terminals with

added MP3 and FM radio listening.

STw5094 offers a number of programmable functions

accessed through an I2C-bus compatible interface.

The STw5094 Stereo Audio DAC section is suited for

MP3, or any other audio stereo source, listening. It

supports all the MP3 rates from 8kHz to 48kHz. The

audio data serial interface is I2S compatible and can

be programmed to handle 16 to 24 bit word length in-

put data. The internal D to A converters work with 18

bit input resolution.

The Stereo Headphones drivers can also be used for

FM Radio listening via an auxiliary stereo analog in-

put. A Loudspeaker driver can also be used for mono-

phonic group listening.

The STw5094 Voice Codec section can be configured

either as a 14-bit linear or as an 8-bit companded

PCM coder. The Frame Synchronism frequency of

the Voice Codec can be either the standard 8kHz val-

ue or the extended 16kHz one.

addition

the

Stereo

Audio

DAC

and

CODEC

⁄ FILTER functions, STw5094 includes a

Tone

⁄ Ring ⁄ DTMF generator that can be used both

in Audio Listening mode and in Voice Codec mode, a

sidetone generation, a buzzer driver output and a re-

mote control function tailored to handle an external

on-hook off-hook button.

STw5094 Voice Codec fulfills and exceeds D3

⁄ D4

and CCITT recommendations and ETSI requirements

for digital handset terminals. The Stereo Audio DAC

part fulfills and exceeds the requirements for MP3

quality and FM radio quality listening. Main applica-

tions include digital mobile phones, as cellular and

cordless phones, with added low-power high-quality

MP3 and

⁄ or FM radio listening features, or any bat-

tery powered equipment that requires Stereo Audio

DAC with Headphones drivers operating at low single

supply voltage.

PIN CONNECTIONS (Top view)

234

MIC2P REMOUT

MCLK

MIC2N

MIC1N

MBIAS

VCC

GND

MIC1P

VCCA

CAP2

REMIN

AUXCLK

LRCK

MIC3

FMR

GNDCM

VCCIO

SDI

SCK

GNDA

HPL

GNDP

DNC

OCK

FML

LSP

VCCP

HPR

SDA

SCL

LSN

TFBGA 6x6x1.2 (36 Pin)

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