[VLSI SOLUTION]

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 variable-sample-rate mono ADC and stereo DAC, followed by an earphone amplifier and a common buffer.

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 driving 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