BU94501AMUV Datasheet, PDF (42/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
FB
FOL+
FOL-
PLAY_RESUME
4 0x61 0x08 M N
4 0x61 0x09 M N
4 0x61 0x0A M N
46 0x61 0x0B 0x00 N
・When receiving the FB command during play, pause, or stop, the LSI searches
the file, N tunes back from the file being played, paused or stopped, in the sort
order.
・When the LSI play is playing a tune in less than N files from the top in the sort
order, it searches the first tune. However, only when the file to be searched is
the first tune within the memory in the “repeat within the memory” setting, the
LSI searches the file across the last tune within the memory to the first one. If
the file to be searched is the first file within the folder in the “repeat within the
folder” setting, the LSI searches the file within the same folder.
・If N=0, the LSI searches the top of the current file. However if it receives the
FB command with N=0 when the play time is within 1 second, the LSI searches
the top of the previous tune.
・If REPEAT or RANDOM is set, the LSI searches files 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.
・When receiving the FOL+ command during play, pause, or stop, the LSI
searches the folder N tunes ahead from the one having the file being played,
paused or stopped in the sort order.
・If the remaining folders are less than N in the sort order, the LSI returns to the
first folder.
・Even if REPEAT or RANDOM is set, the LSI searches the file in the status
where repeat mode is set.
・Search the file chosen at random when RANDOM is set.
・If N=0, the LSI searches the top of the current folder.
・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.
・When receiving the FOL- command during play, pause, or stop, the LSI
searches the folder N tunes back from the one having the file being played or
paused in the sort order.
・When playing a tune less than N folders from the top in the sort order, the LSI
returns to the first folder. However, when playing a file within the first folder,
the LSI searches the folder across the last tune within the memory.
・Even if REPEAT or RANDOM is set, the LSI searches the file in the status
where repeat mode is set.
・Search the file chosen at random when RANDOM is set.
・If N=0, the LSI searches the top of the current folder.
・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 folders to be searched depends on the setting of N in the 4th
byte.
・This command sets 42-byte data obtained by the READ_RESUME_INFO
command to 5^th-46^th bytes.
・Set the data in ascending order of the offsets obtained by the
READ_RESUME_INFO command.
・Select N at the 4^rd byte from the following. Any other setting is considered to
specify N=0x01.
N=0x00 ; Playback is started in the time when 「READ_RESUME_INFO」
command was forwarded.
N=0x01 ; Stop (Pause) in the time when 「READ_RESUME_INFO」command
was forwarded.
N=0x02 ; Playback is started from the front of the tune when
「READ_RESUME_INFO」command was forwarded.
N=0x03 ; Stop (Pause) the front of the tune when 「READ_RESUME_INFO」
command was forwarded.
・If the resume target cannot be searched, the LSI searches the first tune of in
the device and plays or stop (Pause).
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
42/69
TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003