VS1003音频解码芯片为VS10XX系列的第三代产品，是芬兰VLSI Solution Oy公司生产的单片MP3/WMA/MIDI解码和ADPCM编码芯片，它内部包含一个高性能、低功耗的DSP处理核（VSDSP），一个工作内存，一片可供用户程序使用的5.5KB RAM，一个串行SPI总线接口，一个高质量的采样频率可调的过采样DAC以及一个16位的采样ADC.-VS1003 Audio Decoder Chip for VS10XX series of the third-generation products, Finland VLSI Solution Oy company is a manufacturer of single-chip decoder and A MP3/WMA/MIDI DPCM encoding chips, which contain an internal high-performance, low-power DSP (the VSDSP) a work of memory, a user program for the use of 5.5 KB RAM, a serial SPI bus interface, a high-quality sampling frequency adjustable over sampling DAC 16 and a sampling ADC.