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STA015B View Datasheet(PDF) - STMicroelectronics

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STA015B Datasheet PDF : 44 Pages
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®
STA015 STA015B STA015T
MPEG 2.5 LAYER III AUDIO DECODER
WITH ADPCM CAPABILITY
PRODUCT PREVIEW
SINGLE CHIP MPEG 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
EASY PROGRAMMABLE GPSO INTERFACE
FOR ENCODED DATA UP TO 5Mbit/s
(TQFP44 & LFBGA 64)
DIGITAL VOLUME
BASS & TREBLE CONTROL
BYPASS MODE FOR EXTERNAL AUDIO
SOURCE
SERIAL BITSTREAM INPUT INTERFACE
EASY PROGRAMMABLE ADC INPUT INTER-
FACE
ANCILLARY DATA EXTRACTION VIA I2C IN-
TERFACE.
SERIAL PCM OUTPUT INTERFACE (I2S
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
I2C CONTROL BUS
LOW POWER 2.4V CMOS TECHNOLOGY
WIDE RANGE OF EXTERNAL CRYSTALS
FREQUENCIES SUPPORTED
ORDERING NUMBERS: STA015 (SO28)
STA015T (TQFP44)
STA015B (LFBGA 64)
APPLICATIONS
PC SOUND CARDS
MULTIMEDIA PLAYERS
VOICE RECORDERS
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.1a and Fig.1b.
August 2000
1/44
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
 

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