BU94605AKV Datasheet, PDF (38/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

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Datasheet
15.4 NEXT playing mode and Repeat playing mode
You can select the operation as shown below depending on the next playing mode, repeat mode and random mode.
Next playing mode
[1] PLAY_NEXT
[2] PLAY_ALL_STOP
[3] PLAY_FOL_STOP
[4] PLAY_TUN_STOP
: Automatically searches the next tune after the tune being played ends and starts
playing the next tune.
: After the last tune being played within the memory ends, stops upon completion of
search for the next tune. Starts playing the next tune by the play command issued
subsequently.
: After the last tune being played within the folder ends, stops upon completion of
search for the next tune.
Starts playing the next tune by the play command issued subsequently.
: After the tune being played ends, stops upon completion of search for the next tune.
Starts playing the next tune by the play command issued subsequently.
Repeat mode
[1] REPEAT_ALL
the
[2] REPEAT_FOL
[3] REPEAT_TUN
[4] RANDOM_ALL
the
[5] RANDOM_FOL
the
: After playing all the tunes within the memory in process, starts playing them from
beginning of the memory.
: Repeats playing tunes within the folder in process.
: Repeats playing the tune in process.
The operation when the FF and FB command is received follows the setting of the
SET_REPRAND command.
: Plays the range of ±128 files from the current tune being played at random within
memory.
: Plays the range of ±128 files from the current tune being played at random within
older in process.
Random operation is a specification that doesn't continuously play the immediately played tune not the shuffle
operation that doesn't play the played tune before.
Select one operation from next play mode and repeat mode respectively to determine the operation.
When repeat mode is REPEAT_FOL, the PLAY_ALL_STOP becomes invalid, and serves as PLAY_NEXT.
When repeat mode is [3] [4] [5], the PLAY_ALL_STOP and PLAY_FOL_STOP becomes invalid, and serves as
PLAY_NEXT.
Table 17. Next play mode and repeat mode
REPEAT_ALL REPEAT_FOL REPEAT_TUN RANDOM_ALL RANDOM_FOL
PLAY_NEXT
○
○
○
○
○
PLAY_ALL_STOP
○
×
×
×
×
PLAY_FOL_STOP
○
○
×
×
×
PLAY_TUN_STOP
○
○
○
○
○
15.5 Resume playing function
The LSI can read the resume information to the microcomputer, the resume playing will be enabled using this
information.
Table 18. Resume information register structure
Status
OFFSET
The
number
of bytes
NAME
Contents
This data shows the information on the file being played and on
0x38-0x61 42
Resume
information data
the play position.
The data has a LSI-unique structure.
The resume information data is data of 42 bytes.
It outputs with a little endian.
The above resume information has a LSI-unique structure and is used when executing resume play. Therefore, you
should use the data contents as they are without rewriting.
The resume function is implemented by writing the resume information read by READ_RESUME_INFO command to
PLAY_RESUME command. After writing to PLAY_RESUME, the LSI automatically searches the resume file and plays
it.
After reading READ_RESUME_INFO command during file play, the LSI resumes the file from the time
READ_RESUME_INFO has been read.
The data contents read by READ_RESUME_INFO command cannot assure the operations when executing
PLAY_RESUME which has been rewritten due to the positional information within the memory. If the resume
information does not match because of change of memory, the LSI starts playing the first tune.
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2012.12.10 Rev.002