Description

VS1011 is a single-chip MP3 audio decoder. The chip contains a high-performance, low-power DSP processor core VS DSP4, working 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, as well as a

high-quality variable-sample-rate stereo DAC, fol lowed by an earphone amplifier and a ground buffer.

Features

• Decodes MPEG 1 & 2 audio layer 3 (ISO 11172-3), WAV and PCM files

• Supports VBR (variable bitrate) for MP3

• Stream support

• Can be used as a slave co-processor

• Operates with single clock 12.288..14 MHz or 24.576..28 MHz.

• Low-power operation

• High-quality stereo DAC with no phase error between channels

• Stereo earphone driver capable of driving a 30Ω load

• Separate 2.5 .. 3.6V operating voltages for analog and digital

• 5.5 KiB On-chip RAM for user code / data

• Serial control and data interfaces

• New functions may be added with software and 4 GPIO pins