INTEGRATED CIRCUITS
DATA SHEET
SAA2520 Stereo filter and codec for MPEG layer 1 audio applications
Preliminary specific...
INTEGRATED CIRCUITS
DATA SHEET
SAA2520 Stereo filter and codec for MPEG layer 1 audio applications
Preliminary specification File under Integrated Circuits, IC01 August 1993
Philips Semiconductors
Preliminary specification
Stereo filter and codec for MPEG layer 1 audio applications
FEATURES Stereo filtering and codec functions in a single chip MPEG coded interface Filtered data interface Baseband audio data interface LT interface to microcontroller Clock generator Low operating
voltage capability. ORDERING INFORMATION EXTENDED TYPE NUMBER SAA2520GP(1) Note 1. SOT205-1; 1996 August 26. PACKAGE PINS 44 PIN POSITION QFP MATERIAL plastic GENERAL DESCRIPTION
SAA2520
The SAA2520 performs the sub-band filtering and audio frame codec functions to provide efficient audio compression/decompression for MPEG (11172-3) Layer1 applications. It is capable of functioning as a stand-alone decoder but requires the addition of an adaptive masking threshold processor (SAA2521) in order to function as a highly efficient encoder.
CODE SOT205AG
handbook, full pagewidth CLK22
CLK24 X22OUT X24OUT X22IN X24IN 39 40 41 42 43
V DD 28,44 8 SBDA SBCL SBWS SBMCLK
38 1
FS256
CLOCK GENERATOR
SAA2520
SBDIR SBEF
7 11
SUB-BAND SERIAL INTERFACE
9 10 12
STEREO SUB-BAND FILTER PROCESSOR
2 CODEC 3 4
MUTEDAC DEEMDAC ATTDAC
SWS SCL SDA
20 19 21 BASEBAND SERIAL INTERFACE FILTERED DATA INTERFACE MICROPROCESSOR INTERFACE & CONTROL
5,37 V SS
18
17
16
15 FRESET
14
13
36
35
34
...