User Manual

VS1003
8 FUNCTIONAL DESCRIPTION
8 Functional Description
8.1 Main Features
VS1003 is based on a proprietary digital signal processor, VS_DSP. It contains all the code
and data memory needed for MP3, WMA and WAV PCM + ADPCM audio decoding, MIDI
synthesizer, together with serial interfaces, a multirate stereo audio DAC and analog output
amplifiers and filters. Also ADPCM audio encoding is supported using a microphone amplifier
and A/D converter. A UART is provided for debugging purposes.
8.2 Supported Audio Codecs
Conventions
Mark Description
+ Format is supported
- Format exists but is not supported
Format doesn’t exist
8.2.1 Supported MP3 (MPEG layer III) Formats
MPEG 1.0
1
:
Samplerate / Hz Bitrate / kbit/s
32 40 48 56 64 80 96 112 128 160 192 224 256 320
48000 + + + + + + + + + + + + + +
44100 + + + + + + + + + + + + + +
32000 + + + + + + + + + + + + + +
MPEG 2.0
1
:
Samplerate / Hz Bitrate / kbit/s
8 16 24 32 40 48 56 64 80 96 112 128 144 160
24000 + + + + + + + + + + + + + +
22050 + + + + + + + + + + + + + +
16000 + + + + + + + + + + + + + +
MPEG 2.5
1 2
:
Samplerate / Hz Bitrate / kbit/s
8 16 24 32 40 48 56 64 80 96 112 128 144 160
12000 + + + + + + + + + + + + + +
11025 + + + + + + + + + + + + + +
8000 + + + + + + + + + + + + + +
1
Also all variable bitrate (VBR) formats are supported.
2
Incompatibilities may occur because MPEG 2.5 is not a standard format.
Version: 1.08, 2014-12-19 23