STMicroelectronics STA015B
The STA015 is a fully integrated high flexibility MPEG Layer III Audio Decoder, capable of decoding Layer III compressed elementary streams, as specified in MPEG 1 and MPEG 2 ISO standards. The device decodes also elementary streams compressed by using low sampling rates, as specified by MPEG 2.5. 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 Output Interface.APPLICATIONS
● PC SOUND CARDS● MULTIMEDIA PLAYERS
● VOICE RECORDERS
DESCRIPTION
STA015 receives the input data through a Serial input Interface. This interface is software programmable to adapt the STA015 digital output to the most common DACs architectures used on the market. The functional STA015 chip partitioning is described in Fig.1a and Fig.1b. March 2004 w w w .D a S a t e e h U 4 t m o .c 1/55 STA015 STA015B STA015T Figure 1. 1a. Block Diagram for TQFP44 and LFBGA64 package. SDA 31 SCL 32 35 20 18 STROBE TQFP44 I2C CONTROL 34 36 38 SERIAL INPUT INTERFACE GPIO INTERFACE DSP BASED 16 14 37 39 41 43 IODATA [7:0] SDI SCKR BIT_EN DATA-REQ 27 BUFFER 256 x 8 PARSER MPEG L III ADPCM CORE VOLUME & TONE CONTROL OUTPUT BUFFER PCM OUTPUT INTERFACE 42 44 2 3 4 SDO SCKT LRCKT OCLK GPSO_REQ SCK_ADC LRCK_ADC SDI_ADC 40 26 24 ADC INPUT INTERFACE SYSTEM & AUDIO CLOCKS GPSO INTERFACE 25 RESET 15 XTI 13 XTO 22 TESTEN 12 FILT D99AU1116B 28 GPSO_SCKR 33 GPSO_DATA 1b. BLOCK DIAGRAM for SO28 package...