SLAAEM4 October 2025 TAS2120 , TAS2320
The music efficiency mode in TAS2x20 devices is designed to reduce quiescent current (IQ) consumption during active playback, extending battery life without compromising audio quality. This feature is particularly effective for dynamic audio content, such as music, movies, and voice calls, where audio signal levels naturally vary over time.
The device continuously monitors the input audio level against a user-defined threshold set by the MUSIC_EFF_MODE_THR[23:0] register. When the signal falls below this threshold, an internal hysteresis timer is activated. If the signal level remains below the threshold for the full duration defined by the MUSIC_EFF_MODE_TIMER[23:0] register, the device transitions into music efficiency mode.
In this state, internal sensing blocks, such as I-sense and V-sense, enter a low IQ state to reduce the overall device IQ power consumption. While in this mode, the I-V sense output data is held at zero, and the MUSIC_EFF_STATUS bit is set to high to indicate entry. When the audio signal rises above the configured threshold, the device comes out of music efficiency mode and the status bit is set to low.
When the signal level increases above the MUSIC_EFF_MODE_THR[23:0] threshold, the device automatically wakes up the blocks in low IQ mode and continues playing out the audio input signals. The transition from music efficiency mode to normal operation occurs with minimal click and pop. While the device is in music efficiency mode, the audio channel performance is maintained and does not impact the output signal level or noise.
The MUSIC_EFF_MODE_THR[23:0] and MUSIC_EFF_MODE_TIMER[23:0] registers can be configured using the PPC3 software.