Datasheet

239
4341H–MP3–10/07
AT8xC51SND2C/MP3B
10.2 Reset Recommendation to Prevent Flash Corruption .......................................... 48
10.3 Idle Mode.............................................................................................................. 49
10.4 Power-down Mode ............................................................................................... 49
10.5 Registers .............................................................................................................. 51
11. Timers/Counters .................................................................................... 52
11.1 Timer/Counter Operations .................................................................................... 52
11.2 Timer Clock Controller.......................................................................................... 52
11.3 Timer 0 ................................................................................................................. 53
11.4 Timer 1 ................................................................................................................. 55
11.5 Interrupt ................................................................................................................ 56
11.6 Registers .............................................................................................................. 57
12. Watchdog Timer ..................................................................................... 60
12.1 Description ........................................................................................................... 60
12.2 Watchdog Clock Controller................................................................................... 60
12.3 Watchdog Operation ............................................................................................ 61
12.4 Registers .............................................................................................................. 62
13. MP3 Decoder .......................................................................................... 63
13.1 Decoder................................................................................................................ 63
13.2 Audio Controls ...................................................................................................... 65
13.3 Decoding Errors ................................................................................................... 65
13.4 Frame Information ................................................................................................ 66
13.5 Ancillary Data ....................................................................................................... 66
13.6 Interrupt ................................................................................................................ 66
13.7 Registers .............................................................................................................. 69
14. Audio Output Interface .......................................................................... 74
14.1 Description ........................................................................................................... 74
14.2 Clock Generator ................................................................................................... 75
14.3 Data Converter ..................................................................................................... 75
14.4 Audio Buffer.......................................................................................................... 76
14.5 MP3 Buffer ........................................................................................................... 77
14.6 Interrupt Request.................................................................................................. 77
14.7 MP3 Song Playing................................................................................................ 77
14.8 Registers .............................................................................................................. 78
15. DAC and PA Interface ............................................................................ 81