VS1103b

VS1103b Datasheet VS1103b - MIDI/ADPCM AUDIO CODEC Features Description Mixes three audio sources – General MIDI 1+ / SP-MIDI – WAV (PCM + IMA ADPCM) – Microphone or line input Encodes IMA ADPCM from microphone, line input or mixed output Input streams can use different sample rates EarSpeaker Spatial Processing 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 VS1103b is a single-chip MIDI/ADPCM/WAV audio decoder and ADPCM encoder that can handle upto three simultaneous audio streams. It can also act as a Midi synthesizer. VS1103b 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 variable-sample-rate mono ADC and stereo DAC, followed by an earphone amplifier and a common buffer. VS1103b receives its input bitstreams through serial input buses,...