VS1003

VS1003 VS1003 - MP3/WMA AUDIO CODEC Features Decodes MPEG 1 & 2 audio layer III (CBR +VBR +ABR); WMA 4.0/4.1/7/8/9 all profiles (5-384kbit/s); WAV (PCM + IMA ADPCM); General MIDI / SP-MIDI files Encodes IMA ADPCM from microphone or line input Streaming support for MP3 and WAV Bass and treble controls Operates with a single 12..13 MHz clock Internal PLL clock multiplier Low-power operation High-quality on-chip stereo DAC with no phase error between channels Stereo earphone driver capable of driv- ing a 30Ω load Separate operating voltages for analog, digital and I/O 5.5 KiB On-chip RAM for user code / data Serial control and data interfaces Can be used as a slave co-processor SPI flash boot for special applications UART for debugging purposes New functions may be added with soft- ware and 4 GPIO pins Description VS1003 is a single-chip MP3/WMA/MIDI audio decoder and ADPCM encoder. It contains a high-performance, proprietary low-power DSP processor core VS_DSP4, working data 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, an UART, as well as a high-quality variablesample-rate mono ADC and stereo DAC, followed by an earphone amplifier and a common buffer. VS1003 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, ...