Features
 Decodes MPEG 1.0 & 2.0 audio layer
III (MP3: CBR, VBR, ABR); layers I &
II (MP1, MP2) optional; WAV (PCM +
IMA ADPCM)
 320 kbit/s MP3 with 12.0MHz external
clock
 Streaming support for all audio formats
 Bass and treble controls
 Operates with single 12..13MHz or
24..26MHz external clock
 Internal clock doubler
 Low-power operation
 High-quality stereo DAC with no phase
error between channels
 Stereo earphone driver capable of driving
a 30
load
 Separate 2.5..3.6V operating voltages
for analog and digital
 Serial control and data interfaces
 Can be used as a slave co-processor
 5.5 KiB On-chip RAM for user code /
data
 SPI boot for standalone applications
 New functions may be added with software
and 4 GPIO pins
 Lead-free and RoHS-compliant packages
LQFP-48 and SOIC-28

Description
VS1011e is a single-chip MPEG audio (MP3)
decoder IC. It contains a high-performance,
low-power DSP 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-samplerate
stereo DAC, followed by an earphone amplifier
and a common buffer.
VS1011e receives its input bitstream through
a serial input bus, which it listens to as a
system slave. The input stream is decoded
and passed through a digital volume control
to an 18-bit oversampling, multi-bit, sigmadelta
DAC. The decoding is controlled via a
serial control bus. In addition to basic decoding,
it is possible to add application specific
features, like DSP effects, to the user RAM
memory.
VS1011e can boot directly from SPI EEPROM
to run standalone applications without a separate
microcontroller.