VS1103 - MIDI / ADPCM Audio Codec Circuit

• Mixes three audio sources
  • General MIDI 1+ / SP-MIDI
  • WAV (PCM + IMA ADPCM)
  • Microphone or line input
• Encodes IMA ADPCM from microphone line input or mixed output
• Input streams can use different sample rates
• EarSpeaker Spatial Processing
• Bass and treble controls
• Operates with a single 12 - 13 MHz clock
• Internal PLL clock multiplier
• Low-power operation
• High-quality on-chip stereo DAC with no phase error between channels
• Stereo earphone driver capable of driving a 30­ ohm load
• Separate operating voltages for analog, digital and I/O
• 5.5 KiB On-chip RAM for user code / 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 4 GPIO pins