VS1011

VS1011 VS1011 VS1011 - MP3 AUDIO CODEC Features Decodes MPEG 1 & 2 audio layer 3 (ISO 11172-3), WAV and PCM files Supports VBR (variable bitrate) for MP3 Stream support Can be used as a slave co-processor Operates with single clock 12.288..14 MHz or 24.576..28 MHz. Low-power operation High-quality stereo DAC with no phase error between channels Stereo earphone driver capable of driving a 30Ω load Separate 2.5 .. 3.6V operating voltages for analog and digital 5.5 KiB On-chip RAM for user code / data Serial control and data interfaces New functions may be added with software and 4 GPIO pins Description VS1011 is a single-chip MP3 audio decoder. The chip contains a high-performance, low-power DSP processor core VS DSP4 , working memory, 5 KiB instruction RAM and 0.5 KiB data RAM for user applications, serial control and input data interfaces, 4 general purpose I/O pins, as well as a high-quality variable-sample-rate stereo DAC, followed by an earphone amplifier and a ground buffer. VS1011 receives its input bitstream through a serial input bus, which it listens to as a system slave. The input stream is decoded and passed through a digital volume control to an 18-bit oversampling, multi-bit, sigma-delta DAC. The decoding is controlled via a serial control bus. In addition to the basic decoding, it is possible to add application specific features, like DSP effects, to the user RAM memory. GPIO VS1011 4 GPIO Stereo DAC Stereo Ear− phone Driver audio L ...