MP3/WMA Codec IC - VS1003

The VS1003 from VLSI is a single-chip MP3/WMA/MIDI audio decoder and ADPCM encoder. Central to the IC is a high-performance, low-power DSP processor core VS DSP4. It’s loaded with features: working data memory, 5kB instruction RAM and 0.5kB data RAM for user applications, serial control and input data interfaces, 4 general purpose I/O pins, a UART. Also, a high-quality, variable-sample-rate, mono ADC and stereo DAC, followed by an earphone amplifier and a ground buffer

Comes in an LQFP-48 pin package.

  • 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
  • Bass and treble controls
  • Operates with a single 12 - 13 MHz or 24 - 26MHz 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 30­ ohm load
  • Separate operating voltages for analog, digital and I/O
  • 5.5kB On-chip RAM for user code / data
    • 5kB instruction RAM
    • 0.5kB user data RAM
  • 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 software and 4 GPIO pins

MP3/WMA Codec IC - VS1003 Product Help and Resources

Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

3 Soldering

Skill Level: Competent - You will encounter surface mount components and basic SMD soldering techniques are required.
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Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

3 Electrical Prototyping

Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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