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Features

 Laser-fused version of VS1053b

 Decodes

Ogg Vorbis;

FLAC with software plugin;

WAV (PCM + IMA ADPCM)

 Encodes Ogg Vorbis w/ software plugin

 Encodes stereo IMA ADPCM / PCM

 Streaming support for WAV

 Unique serial number for user code protection

 EarSpeaker Spatial Processing

 Bass and treble controls

 Operates with a single 12..13MHz clock

 Can also be used with a 24..26MHz 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

load

 Quiet power-on and power-off

 I2S output interface for external DAC

 Separate voltages for analog, digital, I/

 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

 Lead-free RoHS-compliant package

Description

VS8053b is an audio processor with a high

performance stereo ADC and DAC. Each device

has a factory-programmable unique chip

ID that provides a basis for digital rights management

or unit identification features. VS8053b

supports audio formats that do not require

a license (Ogg Vorbis, PCM, IMA-ADPCM,

FLAC). By using the Ogg Vorbis encoder plugin

the device can be used to build a high performance

and low cost digital audio encoderdecoder

link.

VS8053b contains a high-performance, proprietary

low-power DSP processor core VS_DSP4,

16 KiB instruction RAM and 16 KiB data RAM

for user applications running simultaneously

with built-in decoders, serial control and input

data interfaces, up to 8 general purpose

I/O pins, an UART, as well as a high-quality

variable-sample-rate stereo ADC (mic, line,

line + mic or 2line) and stereo DAC, followed

by an earphone amplifier and a common

voltage buffer.

VS8053b receives its input bitstream through

a serial input bus, which it listens to as a system

slave. The input stream is processed

and passed through a asynchronous sample

rate converter and digital volume control to

an 18-bit oversampling, multi-bit, sigma-delta

DAC.