Power Management ............................................................................ 46
Reset .................................................................................................................. 46
Reset Recommendation to Prevent Flash Corruption ........................................ 47
Idle Mode............................................................................................................ 47
Power-down Mode.............................................................................................. 48
Registers..............................................................................................................50
Timers/Counters ................................................................................. 51
Timer/Counter Operations .................................................................................. 51
Timer Clock Controller........................................................................................ 51
Timer 0................................................................................................................ 52
Timer 1................................................................................................................ 54
Interrupt .............................................................................................................. 55
Registers..............................................................................................................56
Watchdog Timer .................................................................................. 59
Description.......................................................................................................... 59
Watchdog Clock Controller................................................................................. 59
Watchdog Operation............................................................................................60
Registers..............................................................................................................61
MP3 Decoder ....................................................................................... 62
Decoder .............................................................................................................. 62
Audio Controls .....................................................................................................64
Decoding Errors.................................................................................................. 64
Frame Information ...............................................................................................65
Ancillary Data...................................................................................................... 65
Interrupt ...............................................................................................................66
Registers..............................................................................................................68
Audio Output Interface ....................................................................... 73
Description.......................................................................................................... 73
Clock Generator...................................................................................................74
Data Converter ................................................................................................... 74
Audio Buffer........................................................................................................ 75
MP3 Buffer.......................................................................................................... 76
Interrupt Request................................................................................................ 76
MP3 Song Playing .............................................................................................. 76
Voice or Sound Playing ...................................................................................... 77
Registers..............................................................................................................78
DAC and PA Interface ......................................................................... 80
DAC .................................................................................................................... 80
Power Amplifier....................................................................................................98
Audio Supplies and Start-up............................................................................... 99
232
AT8xC51SND2C
4341D–MP3–04/05
ATMEL [ ATMEL ]
