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Document Reference No.: FT_000550
Vinco Ethernet MP3 RTCShield Datasheet 1.0
Clearance No.: FTDI#256
2.7 Audio Codec Operation
The audio codec is the VLSI VS1053b. This will allow encoded audio files in MP3 format to be decoded to
analogue for playback over headphones or a speaker.
Figure 2.2 –
SPI Master communicates with VS1053b via the SPI bus
RTC, SPI Master and GPIO drivers are available with the Vinculum-II Toolchain at VNC2 IDE to allow data
transfer over the SPI interface to the VNC2 on the Vinco baseboard.
Additionally the VS1053b can accept analogue audio from a MIC to be encoded for transfer over SPI to
the VNC2 on the Vinco baseboard. In theory the Vinco could then be used to save the encoded audio file
on a USB memory device for playback later, or possibly transfer over Ethernet to a second device for
playback using the Ethernet chip on this shield.
NOTE: At the time of writing this document, the current driver does not support audio recording.
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Copyright ? 2011 Future Technology Devices International Limited
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