MP3 Codec IC - VS1103B

Product Description

Description: VS1103b is a single-chip MIDI/ADPCM/WAV audio decoder and ADPCM encoder that can handle up to 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, which it listens to as a system slave. The input streams are decoded and passed through digital volume controls to an 18-bit oversampling, multi-bit, sigma-delta DAC. Decoding is controlled via a serial control bus. In addition to basic decoding, it is possible to add application specific features, like DSP effects, to user RAM memory.



Available in a LQFP-48 pin 7x7x1.4mm package.



Features:

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  Mixes three audio sources: General MIDI 1+ / SP-MIDI, WAV (PCM + IMA ADPCM), Microphone or line input


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  Encodes IMA ADPCM from microphone, line input or mixed output


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  Input streams can use different sample rates


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  EarSpeaker Spatial Processing


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  Bass and treble controls


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  Operates with a single 12 to 13 MHz clock


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  Internal PLL clock multiplier


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  Low-power operation


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  High-quality on-chip stereo DAC with no phase error between channels


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  Stereo earphone driver capable of driving a 30Ω load


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  Separate operating voltages for analog, digital and I/O


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  5.5 KiB On-chip RAM for user code / data


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  Serial control and data interfaces


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  Can be used as a slave co-processor


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   SPI flash boot for special applications


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  UART for debugging purposes


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  New functions may be added with software and 4 GPIO pins

Documents:

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  VLSI website


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  VS1103B Datasheet