Hardware Features
 Low-power operation
 Single input voltage: Internal voltage regulation
for analog, digital, and I/O power
 Operates with a single 12 MHz clock
 Internal PLL clock multiplier
 Power button pin,
software-controlled power-off
 USB Full Speed hardware
 NAND FLASH interface with ECC
 I/O for user interface
 High-quality on-chip stereo DAC with no
phase error between channels
 Stereo earphone driver capable of
driving a 30
load
 Lead-free RoHS-compliant package
(Green)

Firmware Features
 Implements USB Mass Storage Device
and Audio Device
 NAND FLASH handling with error correction,
block remapping, and wear levelling
 Default player application in firmware
– Decodes Ogg Vorbis, sound level
normalization using Replay Gain
– Pause / Play
– Volume control
– Next / Previous Song
– Rewind and Fast Forward
– Random Play
– EarSpeaker Spatial Processing
 Bass and treble controls for customized
player
 NAND FLASH boot for customized player
 SPI FLASH boot for special applications
 UART for debugging and special applications

Description
VS1000 is a single-chip Ogg Vorbis (licensefree
audio codec) player and a system-on-achip
(SoC) for various control and audio applications.
VS1000 contains a high-performance
low-power DSP core VSDSP4, NAND
FLASH interface, Full Speed USB port, general
purpose I/O pins, SPI, UART, as well as a
high-quality variable-sample-rate stereo DAC,
and an earphone amplifier and a common
voltage buffer.
VS1000 firmware implements a default player
that reads and plays files from NAND FLASH.
The player can be customized or replaced by
boot from NAND FLASH or SPI memory.
When connected to USB, the firmware implements
USB Mass Storage Device protocol or
acts as an Audio Device, providing a singlechip
USB headphone application.
EarSpeaker spatial processing provides more
natural sound in headphone listening conditions.
It widens the stereo image and positions
the sound sources outside the listener’s
head.
SPI EEPROM can be used to load code in
applications that do not use NAND FLASH.