BU94501AMUV Datasheet, PDF (41/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
PLAY control
PLAY
PAUSE
HOME
PLAYMODE
VOL+
VOL-
REPEAT
RANDOM
2 0x61 0x01 -
- ・When receiving the PLAY command during stop, the LSI starts playing the file
currently selected.
・When receiving the PLAY command during pause, the LSI starts playing the
file at the paused time.
・When receiving the PLAY command in the CONFIG mode, the LSI
automatically goes to the PLAYER mode and plays the first tune in the sort
order.
2 0x61 0x02 -
- ・When receiving the PAUSE command during play, the LSI pauses playing of
the file
4 0x61 0x03 N 0x00 ・When receiving the HOME command, the LSI searches files of the first tune
within the memory.
・TAG analysis, if it is enabled, is performed.
・It is not the first tune in the memory at the time of the random setup, but it is
moved for the tune chosen at random.
・Select N at the 3^rd byte from the following. Any setting other than N=0x00 is
considered to specify N=0x01.
N=0x00: Stops after search is completed.
N=0x01: Starts playing after search is completed.
4 0x61 0x04 N 0x00 ・When receiving the PLAYMODE command, the LSI changes play mode in
accordance with the setting of N in the 3^rd byte.
・During play, the play mode is immediately changed. During stop, this command
cannot start playing the file.
・Select N at the 3^rd byte from the following. Any other settings will not accept the
command.
N=0x00: Changes to normal play.
N=0x01: Changes to fast forward.
N=0x02: Changes to rewind.
・Initial setting is N= 0x00. It is normal Playing.
4 0x61 0x06 0x01 0x00 ・When receiving the VOL+ command, the LSI controls the sound volume step
by incrementing by 1.
・The sound volume is controlled in 32 steps from -∞ (minimum volume) to 0 dB
(maximum volume).
4 0x61 0x06 0x02 0x00 ・When receiving the VOL- command, the LSI controls the volume step by
decrementing by 1.
・The sound volume is controlled in 32 steps from -∞ (minimum volume) to 0 dB
(maximum volume).
4 0x61 0x06 0x03 0x00 ・This command changes the mode for repeat.
・REPEAT command toggles as: memory repeat ->1 music repeat -> folder
repeat.
・For the settings of the REPEAT, RANDOM, and SET_REPRAND commands,
the one finally set becomes enabled.
・Initial setting is the all-songs repeat in a memory.
4 0x61 0x06 0x04 0x00 ・This command changes the mode for random play.
・If random play is enabled, the LSI plays the currently-played file at random in
the area of ±128 files in the sort order.
・The RANDOM command toggles as: Normal play→Repeat all the tunes within
the memory.
・For the settings of the REPEAT, RANDOM and SET_REPRAND commands,
the one finally set becomes enabled.
FF
4 0x61 0x07 M N ・When receiving the FF command during play, pause, or stop, the LSI searches
the file N tunes ahead from the file being played or paused in the sort order.
・If the number of remaining files is less than N in the sort order, the LSI
searches back to the first file.
・If N=0, the LSI searches the current file.
・If REPEAT or RANDOM is set, the LSI searches the next file in accordance
with the setting. However, if “Repeats one tune” is set, the LSI searches the
next file in accordance with the SET_REPRAND command setting.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in the 3^rd byte.
Select M at the 3^rd byte from the following. Any setting other than M=0x00 is
considered to specify M=0x01.
M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in the 4th
byte.
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TSZ22111・15・001
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003