Description
The STA331 device is a high-efficiency audio codec with an integrated ARM7TDMI® core capable of running audio processing algorithms up to 75 MHz. The surrounding analog and digital audio peripherals turn it in the ideal and flexible solution for mid-range sound processing applications, where final product differentiation is a must. The code runs off from
the embedded RAM, uploaded by an external serial flash and the whole set of audio parameters and functionalities may be controlled via I2C or customizable GPIO interface (for micro-less operation). Moreover, the widely adopted core allows for a fast porting of third-parties audio effects, typically available on ARM® processors.

Features
■ High efficiency class D FFX^TM technology.
■ Stereo ADC input with integrated microphone bias
■ Digital/analog I/O muxing and down-mixing capability
■ Low power architecture
■ I/O supply voltage range: 1.8 V to 3.6 V
■ Programmable GPIO functionalities for micro less operation
■ Audio processing libraries:
– tones, WideSurround, StereoEnhancer
– intelligent volume control (MDCR)
– enhanced listening modes (voice, midnight modes)
– MP3 and WMA decoders (ROM option only)
– Noise Reduction and Echo Cancellation (NREC)
– Loudspeaker and cabinet compensation EQ
– Third parties audio effects
■ Package: LQFP100.

Applications
■ Flat panel TV
■ Home audio stereo
■ Cradle systems
■ Soundbar systems (2.1ch)
■ Loudspeaker compensation