SAA2520

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 ...