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.