System Software and Power Management in a System-on-Chip for Portable Audio Players

Portable devices include audio playback, radio, audio record, movie playback, and image viewer applications. System-on-Chip (SoC) for portable audio players demands low-power and small form-factors differentiated by a wide array of audio effects along with video and image capabilities. This paper describes the power management, software and hardware architecture of SoC for portable audio players.