1. VS1003 MP3/WMA AUDIO CODEC

2. Specification  Decoder  MP3/WMA/MIDI  Encoder  IMA ADPCM(WAV)  MP3 and WAV Streaming  SPI Interface  VS_DSP  Low power DSP processor

3. SPI Interface  Serial Command Interface SCI  XCS is low  Support Read & Write instructions  DREQ low after each SCI operation  Serial DATA Interface SDI  XDCS is low  Support Data input (MP3, WMA)

4. SCI Registers Setting Mode -Stream mode -Recording mode -Reset Read Stream Data or Recording Data Recording Mode Sampling Rate Gain control Clock setting

5. Streaming  SCI-MODE : Stream mode activation  SCI-HDAT  WAV : HDAT0 - 0x7761 / HDAT1 - 0x7665  WMA : HDAT0 – Data speed(Bytes/sec) / HDAT1 – 0x574D  MIDI :  MP3 : HDAT1HDAT0[15:8] HDAT0[7:0] 0x4D541..255reserved 0polyphony HDAT1[15:5]SyncwordHDAT0[8]Private bit HDAT1[4:3]IDHDAT0[7:6]Mode HDAT1[2:1]LayerHDAT0[5:4]Extension HDAT1[0]Protect bitHDAT0[3]Copyright HDAT0[15:12]BitrateHDAT0[2]Original HDAT0[11:10]Sample rateHDAT0[1:0]emphasis HDAT0[9]Pad bit

6. Recording  SCI-MODE  SM_ADPCM : Activate ADPCM recording mode  SM_LINE_IN : ADPCM recording selector MIC or LINE IN  Clock setting  SCI-CLOCKF : Internal Clock  AICTRL0 : Sampling Rate  AICTRL1 : Gain control  Reading IMA ADPCM data  Sample buffer 1024 16bit words  HDAT1 : status of the buffer  HDAT0 : read 16bit words data

7. Recording  RIFF/WAV file header

8. Recording  Internal Clock : 2 * 12.288MHz  Sampling rate : 8kHz 120ms512Bytes 1sec4267bytes 10sec42667bytes(42KB)

9. VS1063  Encoders  MP3, Ogg Vorbis, PCM, IMA ADPCM  Decoders  MP3, MPEG4, Ogg Vorbis, FLAC, WMA, WAV(PCM, IMA ADPCM)  I2S output interface for external DAC

10. Power Consumption  VS1003  VS1063