BU94501AMUV Datasheet, PDF (45/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
PLAY_DIRECT
MOV_NEXT
MOV_PREV
MOV_UP
MOV_DOWN
MOV_HOME
MOV_PLAYING
MOV_DIRECT
SET_EXTENSION
10 0x62 0x01 0x04 0x00 ・This command starts playing the file specified by the access data.
・If the access data does not specify a playable file, the LSI searches the first
tune in the device and stops.
・The position of the memory browsing cursor does not change.
・Set the access data at the 5^th-10^th bytes.
4 0x62 0x02 0x01 N ・This command moves the memory browsing cursor from the current position to
the position N ahead in the sort order.
・The analysis is performed for the information of the 10 entries specified,
starting from the move destination. After the analysis is completed, the LSI
writes the result to the status register.
・If there are less than N files after the current memory browsing cursor position
in the folder, the cursor position goes to the end of the folder.
・If the sort function (SET_SORT) is OFF, the cursor moves in the FAT order.
4 0x62 0x02 0x02 N ・This command moves the memory browsing cursor from the current position to
the position N backward in the sort order.
・The analysis is performed for the information of the 10 entries specified,
starting from the move destination. After the analysis is completed, the LSI
writes the result to the status register.
・If there are less than N files from the top of the folder to the current memory
browsing cursor position, the cursor position goes to the top of the folder.
・If the sort function (SET_SORT) is OFF, the cursor moves in the FAT order.
4 0x62 0x02 0x03 0x00 ・This command moves the memory browsing cursor to a higher-level folder.
・After moving, the LSI analyzes the folder.
・If the cursor is in the highest layer (root), nothing will be done.
4 0x62 0x02 0x04 0x00 ・This command selects the lower-level holder pointed by the memory browsing
cursor to move. After moving, the LSI analyzes the folder.
・When a folder is selected, the LSI starts analyzing it.
・When a file is selected, the LSI does not accept the command.
・If the cursor selects the folder in the lowest layer, nothing will be done.
4 0x62 0x02 0x05 0x00 ・This command moves the memory browsing cursor to the top of the root folder.
・After moving, the LSI analyzes the folder.
4 0x62 0x02 0x06 0x00 ・This command moves the memory browsing cursor to the tune being played.
・After moving, the LSI analyzes the folder.
・During stop or search, the LSI does not accept the command.
10 0x62 0x02 0x07 N
4 0x62 0x04 0x00 N
・This command moves the memory browsing cursor to the position specified by
the access data.
・After moving, the LSI starts analyzing at this position.
・Set the access data at the 5^th-10^th bytes.
・Select the operation after moving with N in the 4^th byte. Select N from the
following. Any setting other than N=0x00 will be considered to specify
N=0x01.
N=0x00: Only moves the cursor and analyzes.
N=0x01: If moving to a file, starts playing it.
・Don't use MOV_DIRECT command with N=0x01 (a setup with the starts
playing) in the PLAYER mode when use SET_EXTENSION command by the
setup except for N=0x00 (the file which can reproduce). The movement of the
browsing cursor is to use a MOV_DIRECT command (There is no N=0x00;
Playable file.)
Play start is to use PLAY_DIRECT command.
・This command sets the type of file to be output to the status register when
browsing within the memory (analyzing the folder).
・Select N at the 4^th byte from the following. Any other settings will not accept
the command.
N=0x00: Playable file
N=0x02: All files
N=0x03: Folder only (Does not browsing files.)
・The initial value depends on the mode.
In PLAYER mode: N=0x00: Playable file
In PLAYLIST mode: N=0x01: Play list file
In FILE RW: N=0x02: All files
In other cases: N=0x00: Playable file
・The setting of this command is reflected only when the ANALYZE_ROOT
command is executed. After setting the command again, be sure to execute
the ANALYZE_ROOT command.
・Don't use MOV_DIRECT command (There is N=0x01; starts playing.) and a
PLAY_CURSOR command in the PLAYER mode when use it by the setup
except for N=0x00 (Playable file).
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TSZ22111・15・001
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003