The stereo 16- headphone drivers on the AIC29 support capless as well as ac-coupled output configurations. An 8- BTL differential speaker driver provides up to 400 mW of power and 98-dB SNR, while a differential driver is also available for driving a 32- speaker or telephone earpiece. A programmable digital audio effects processor enables bass, treble, midrange, or equalization playback processing. The digital audio data format is programmable to work with popular audio standard protocols (I2S, DSP, left/right justified) in master or slave mode, and also includes an on-chip programmable PLL for flexible clock generation capability. Highly configurable software power control is provided, enabling 48 ksps stereo audio playback to 16- headphones at 19 mW with a 3.3-V analog supply level.