GENERAL DESCRIPTION

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.

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.