Datasheet

VS1053b Datasheet
8 FUNCTIONAL DESCRIPTION
8 Functional Description
8.1 Main Features
VS1053b is based on a proprietary digital signal processor, VS_DSP. It contains all the code
and data memory needed for Ogg Vorbis, MP3, AAC, WMA and WAV PCM + ADPCM audio
decoding and a MIDI synthesizer, together with serial interfaces, a multirate stereo audio DAC
and analog output amplifiers and filters. Also PCM/ADPCM audio encoding is supported us-
ing a microphone amplifier and/or line-level inputs and a stereo A/D converter. With software
plugins the chip can also decode lossless FLAC as well as record the high-quality Ogg Vorbis
format. A UART is provided for debugging purposes.
8.2 Supported Audio Codecs
Conventions
Mark Description
+ Format is supported
? Format is supported but not thoroughly tested
- 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
:
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.
Version: 1.13, 2011-05-27 24