资 源 简 介
VS1103b is a single-chip MIDI/ADPCM/WAV audiodecoder and ADPCM encoder that can handleupto three simultaneous audio streams. It can alsoact as a Midi synthesizer.VS1103b contains a high-performance, proprietarylow-power DSP processor core VS DSP4, workingdata memory, 5 KiB instrucTIon RAM and0.5 KiB data RAM for user applicaTIons, serialcontrol and input data interfaces, 4 general purposeI/O pins, an UART, as well as a high-qualityvariable-sample-rate mono ADC and stereo DAC,followed by an earphone amplifier and a commonbuffer.VS1103b receives its input bitstreams through serialinput buses, which it listens to as a systemslave. The input streams are decoded and passedthrough digital volume controls to an 18-bit oversampling,mulTI-bit, sigma-delta DAC. Decodingis controlled via a serial control bus. In addiTIonto basic decoding, it is possible to add applicationspecific features, like DSP effects, to user RAM memory.
