音频解码芯片

VS1053目前算是VLSI公司音频解码解决方案中的旗舰产品。　支持大多数主流的音频格式的解码，　甚至允许用户动态加载实时代码，　扩展芯片功能（VS1053的核心是一枚DSP)。　此外VS1053还支持三种格式的编码录音。 片内也搭载有一些音效处理。

具体功能如下：

Decodes multiple formats
Ogg Vorbis
MP3 = MPEG 1 & 2 audio layer III (CBR+VBR+ABR)
MP1 & MP2 = MPEG 1 & 2 audio layers I & II optional
MPEG4 / 2 AAC-LC(+PNS), HE-AAC v2 (Level 3) (SBR + PS)
WMA4.0/4.1/7/8/9 all profiles (5-384 kbps)
FLAC lossless audio with software plugin (upto 24 bits, 48 kHz)
WAV (PCM + IMA ADPCM)
General MIDI 1 / SP-MIDI format 0
Encodes three different formats from mic/line in mono or stereo

Ogg Vorbis with software plugin
IMA ADPCM
16-bit PCM
Streaming support
EarSpeaker Spatial Processing
Bass and treble controls
Operates with a single 12-13 MHz or 24-26 MHz clock
Internal PLL clock multiplier
Low-power operation
High-quality on-chip stereo DAC with no phase error between channels
Zero-cross detection for smooth volume change
Stereo earphone driver capable of driving a 30  ohm load
Quiet power-on and power-off
I2S interface for external DAC
Separate voltages for analog, digital, I/O
16.5 KiB on-chip RAM for user code and 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 software and up to 8 GPIO pins

也可以访问其官方网站　http://www.vlsi.fi/en/products/vs1053.html

VS1053常规使用SPI接口接收主控设备控制和数据传输  
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