July 2000

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

ORDERING NUMBERS: STA014 (SO28)

STA014T (TQFP44)

STA014B (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

- encoding algorithm: DVI,

ITU-G726 pack (G723-24, G721,G723-40)

- Tone control and fast-forward capability

SRS WOW

AS

POSTPROCESSING.

SUPPORT

FOR

DIFFERENT SPEAKERS TYPES:

- headphone

- medium

- large

WOW

INDIPENDENTLY ADJUSTED

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 INTERFACE

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 RECORDERS

DESCRIPTION

The STA014 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. STA014 receives the input data

through a Serial Input Interface. The decoded sig-

nal is a stereo, mono, or dual channel digital output

that can be sent directly to a D/A converter, by the

PCM Output Interface. This interface is software

programmable to adapt the STA014 digital output

to the most common DACs architectures used on

the market. The functional STA014 chip partitioning

is described in Fig.1a and Fig.1b.

STA014 STA014B STA014T

MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM AND

PRODUCT PREVIEW

®

The Device incorporates the SRS

WOW

®

Technology

under

li-

cence from SRS Labs, Inc.

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