STMP3410L
2004-02-13
SigmaTel＇s STMP3410 is a second generation single-chip highly-integrated digital music system solution for devices such as digital audio players, PDAs, and cell phones. It includes an audio decoder with a high performance DSP, ADPCM record capabilities and a USB interface for downloading music and uploading voice recordings. The chip also includes a mixer, DAC, ADC and provides interfaces to CD-DSPs, flash memory, LED/LCDs, button & switch inputs, headphones, FM radio input & controls and a microphone. The chip＇s highly programmable architecture supports MP3, WMA, and other digital audio standards. WMA digital rights management and other security schemes are also supported. The end-user can download music and also update firmware through a USB interface. For devices like PDAs and cell phones, STMP3410 can act as a slave chip to a host chip/processor. The DAC includes a headphone driver to directly drive low impedance headphones. The ADC includes inputs for both microphone and analog audio in to support voice recording & FM radio integration features. SigmaTel＇s proprietary Sigma-Delta technology achieves a DAC SNR in excess of 90 dB for high-quality audio playback. The STMP3410 has low power consumption to allow long battery life and includes an efficient flexible on-chip DC-DC converter that allows many different battery configurations, including 1xAA, 1xAAA, 2xAA, 2xAAA and LiIon. In addition, the single-chip design and low pin count enables very small digital audio devices to be designed.