VS1000 - Ogg Vorbis Player System Circuit

Block diagram

Introduction

The VS1000 is a system-on-a-chip. Instead of being yet another "MP3 decoder circuit" the VS1000 plays back Ogg Vorbis, which is both a technically superior format and free of royalty payments. Because of this the VS1000 IC is a cost-effective and high-quality solution for applications where the actual audio format doesn't make a difference, but quality does - like toys and different audio guides. The chip also has NAND FLASH and Full Speed USB interfaces, plus I/O pins that can be used to control e.g. an LCD or OLED matrix display. It can also regulate its internal voltages from a single input voltage, so connecting it to a system is easy.

Hardware Features

  • Complete player, just memory and crystal needed externally.
  • Low-power operation
  • Single input voltage: Internal voltage regulation for analog, digital, and I/O power
  • Operates from single 12 MHz clock
  • Internal PLL clock multiplier
  • Power button pin,
  • Software-controlled power-off
  • USB Full Speed hardware (12Mbit/sec)
  • 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 ohm load

Firmware Features

  • Uses Ogg Vorbis decoder. Its has high quality vs. bit-rate and is free of royalty payments
  • Implements USB Mass Storage Device and Audio Device
  • NAND FLASH handling with error correction, block remapping, and wear leveling
  • 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

Package

LQFP48 7x7x1.4mm