[VLSIOY Solution]

Description

VS1053b is a single-chip Ogg Vorbis/MP3/AAC/- WMA/MIDI audio decoder and an IMA ADPCM and user-loadable Ogg Vorbis encoder. It contains a high-performance, proprietary low-power DSP processor core VS DSP4, working data memory, 16 KiB instruction RAM and 0.5+ KiB data RAM for user applications running simultaneously with any built-in decoder, serial control and input data interfaces, upto 8 general purpose I/O pins, an UART, as well as a high-quality variable-samplerate stereo ADC (mic, line, line + mic or 2×line) and stereo DAC, followed by an earphone amplifier and a common voltage buffer.

Features

• Decodes Ogg Vorbis; MPEG 1 & 2 audio layer III (CBR +VBR +ABR); layers I & II optional; MPEG4 / 2 AAC-LC(+PNS), HE-AAC v2 (Level 3) (SBR + PS); WMA 4.0/4.1/7/8/9 all profiles (5-384 kbps); WAV (PCM + IMA ADPCM); General MIDI 1 / SP-MIDI format 0 files

• Encodes Ogg Vorbis with software plugin (available Q4/2007)

• Encodes IMA ADPCM from mic/line (stereo)

• Streaming support for MP3 and WAV

• EarSpeaker Spatial Processing

• Bass and treble controls

• Operates with a single 12..13 MHz clock

• Can also be used with a 24..26 MHz 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 Ω load

• Quiet power-on and power-off

• I2S interface for external DAC

• Separate voltages for analog, digital, I/O

• 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 upto 8 GPIO pins

• Lead-free RoHS-compliant package (Green)