SAA2520 is an integrated audio codec chip launched by Philips Semiconductors, which supports MPEG (11172-3) Layer1 audio applications. The chip integrates audio filter, encoder and decoder functions, and can realize efficient audio compression/decompression.
The Philips SAA2520 is an integrated circuit designed to perform stereo filtering and codec functions in a single chip for MPEG Layer 1 audio applications. It handles sub-band filtering and audio compression/decompression, functioning as a stand-alone baseband audio data interface decoder. To operate as a highly efficient encoder, it requires an adaptive masking threshold processor, such as the SAA2521.
The device features a filtered data interface, a clock generator, and low operating voltage capability. It supports a 24.576 MHz crystal oscillator and includes various interfaces for microcontrollers and digital audio systems. The datasheet provides detailed information on pin configurations, functional descriptions of the coding and decoding systems, and circuit diagrams for crystal oscillators.
| Supply Voltage | +5 V |
|---|---|
| Crystal Frequency | 24.576 MHz |
| Package Type | 44 QFP plastic |
| Application | MPEG Layer 1 audio |
A 24.576 MHz crystal is used to form the oscillator.
The SAA2520 is a stereo filter and codec designed for MPEG layer 1 audio applications.
The positive supply voltage must be +5 V.
The reset must remain active until CLK24 has executed more than 24 clock cycles.