This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

February 2000

ORDERING NUMBERS: STA015 (SO28)

STA015T (TQFP44)

STA015B (LFBGA 64)

SINGLE CHIP MPEG2 LAYER 3 DECODER

SUPPORTING:

- All features specified for Layer III in ISO/IEC

11172-3 (MPEG 1 Audio)

- All features specified for Layer III in ISO/IEC

13818-3.2 (MPEG 2 Audio)

- Lower sampling frequencies syntax extension,

(not specified by ISO) called MPEG 2.5

DECODES LAYER III STEREO CHANNELS,

DUAL

CHANNEL,

SINGLE

CHANNEL

(MONO)

SUPPORTING ALL THE MPEG 1 & 2 SAM-

PLING FREQUENCIES AND THE EXTEN-

SION TO MPEG 2.5:

48, 44.1, 32, 24, 22.05, 16, 12, 11. 025, 8 KHz

ACCEPTS MPEG 2.5 LAYER III ELEMEN-

TARY COMPRESSED BITSTREAM WITH

DATA RATE FROM 8 Kbit/s UP TO 320 Kbit/s

ADPCM CODEC CAPABILITIES:

- sample frequency from 8 kHz to 32 kHz

- sample size from 8 bits to 32 bits

- encodingalgorithm: DVI,

ITU-G726pack (G723-24,G721,G723-40)

- Tone control andfast-forward capability

EASY PROGRAMMABLE GPSO INTERFACE

FOR ENCODED DATA

UP

TO

5Mbit/s

(TQFP44 & LFBGA 64)

DIGITAL VOLUME

BASS & TREBLE CONTROL

SERIAL BITSTREAM INPUT INTERFACE

EASY PROGRAMMABLE ADC INPUT INTER-

FACE

ANCILLARY DATA EXTRACTION VIA I2C IN-

TERFACE.

SERIAL PCM OUTPUT INTERFACE (I

AND OTHER FORMATS)

PLL FOR INTERNAL CLOCK AND FOR OUT-

PUT PCM CLOCK GENERATION

CRC CHECK AND SYNCHRONISATION ER-

ROR DETECTION WITH SOFTWARE INDI-

CATORS

I

LOW POWER 2.4V CMOS TECHNOLOGY

WIDE RANGE OF EXTERNAL CRYSTALS

FREQUENCIES SUPPORTED

APPLICATIONS

PC SOUND CARDS

MULTIMEDIA PLAYERS

VOICE RECORDERED

DESCRIPTION

The STA015 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.

STA015 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 STA015 digital output to the

most common DACs architectures used on the

market.

The functional STA015 chip partitioning is de-

scribed in Fig.1 and Fig.2.

STA015 STA015B STA015T

MPEG 2.5 LAYER III AUDIO DECODER

WITH ADPCM CAPABILITY

PRODUCT PREVIEW

®

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