• a mp3-decoder chip
  • a source selector & volume controller
  • an interface to support many small-sized text/graphics lc-displays (plcdio-style)
  • one or two radio tuner modules with hw rds/rdbs decoder
  • 3 push-buttons and a rotary encoder + 4th button
  • an ir-remote sensor
  • additional mono and a stereo line-in

All of these devices are supported by linux drivers (mp3,mixer,radio/rds,buttons) or software packages (lirc, lcdproc)!

There is some older but more into depth documentation available.

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