STA003T datasheet(1/32 Pages) STMICROELECTRONICS

No. de pieza	STA003T

Descripción Electrónicos	MPEG 2.5 LAYER III AUDIO DECODER

PDF	32 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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January 2002

SO28

SINGLE CHIP MPEG2 LAYER 3 DECODER

SUPPORTING:

- All features specified for Layer III in ISO/IEC

11172-3 (MPEG 1 Audio) except 44.1KHz

Audio

- All features specified for Layer III 2 channels

in ISO/IEC13818-3.2 (MPEG 2 Audio) except

22.05KHz Audio

- Lower sampling frequencies syntax extension,

(not specified by ISO) called MPEG 2.5

except 11.025KHz Audio

DECODES LAYER III STEREO CHANNELS,

DUAL

CHANNEL,

SINGLE

CHANNEL

(MONO)

SUPPORTING THE MPEG 1 & 2 SAMPLING

FREQUENCIES AND THE EXTENSION TO

MPEG 2.5:

48, 32, 24, 16, 12, 8 KHz

ACCEPTS MPEG 2.5 LAYER III ELEMEN-

TARY COMPRESSED BITSTREAM WITH

DATA RATE FROM 8 Kbit/s UP TO 128 Kbit/s

DIGITAL VOLUME CONTROL

DIGITAL BASS & TREBLE CONTROL

SERIAL BITSTREAM INPUT INTERFACE

ANCILLARY DATA EXTRACTION VIA I2C IN-

TERFACE.

SERIAL PCM OUTPUT INTERFACE (I

2S

AND OTHER FORMATS)

PLL FOR INTERNAL CLOCK AND FOR OUT-

PUT PCM CLOCK GENERATION

LOW POWER DATA ELABORATION FOR

POWER CONSUMPTION OPTIMISATION

CRC CHECK AND SYNCHRONISATION ER-

ROR DETECTION WITH SOFTWARE INDI-

CATORS

I

2C CONTROL BUS

LOW POWER 3.3V CMOS TECHNOLOGY

14.72MHz EXTERNAL INPUT CLOCK OR

BUILT-IN XTAL OSCILLATOR

APPLICATIONS

STARMAN SATELLITE RADIO RECEIVER

DESCRIPTION

The STA003T is a fully integrated high flexibility

MPEG Layer III Audio Decoder, capable of de-

coding Layer III compressed elementary streams,

as specified in MPEG 1 and MPEG 2 ISO stand-

ards. The device decodes also elementary streams

compressed by using low sampling rates, as speci-

fied by MPEG 2.5.

STA003T receives the input data through a Serial

Input Interface. The decoded signal is a stereo,

mono, or dual channel digital output that can be

sent directly to a D/A converter, by the PCM Out-

put Interface. This interface is software program-

mable to adapt the STA003T digital output to the

most common DACs architectures used on the

market.

The functional STA003T chip partitioning is de-

scribed in Fig.1.

STA003T

MPEG 2.5 LAYER III AUDIO DECODER

®

1/32

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