BU94605AKV Datasheet, PDF (27/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

BU94605AKV BU94607AKV BU94702AKV BU94705AKV
Datasheet
9. Interrupt terminal to microcomputer
9.1 BUSY
BUSY status detection output
Signal name
I/O
Function
BUSY
O BUSY status detection output signal
Remarks
H: Busy, L: Not Busy
This is output to indicate that the LSI is in the BUSY status.
A BUSY signal outputs H until analyzing a command from the master and starting the command operation.
This LSI ignores command input during BUSY. Please connect it with the PIO port of the microcomputer.
9.2 MCHNG
Tune number change detection output
Signal name
I/O
Function
MCHNG
O Tune number change detection output signal
Remarks
H: During playing,
L: At the end or stop of tune
This signal outputs the information which tells that the file within the memory is being played or the file to be played is
changed.
Precisely, the signal outputs H during the internal decode sequence operation, and L at stop of the operation.
Please connect it with the interrupt port of the microcomputer.
9.3 SEARCH
SEARCH status detection output
Signal name
I/O
Function
SEARCH
O SEARCH status detection output signal
Remarks
H: SEARCH, L: Not SEARCH
This is output to indicate that the LSI is in the SEARCH status.
A SEARCH signal becomes H at the time of memory mount, file search, TAG analysis and TOC analysis.
The LSI ignores command input during SEARCH.
However, it can accept only ABORT, STOP and status read commands even during SEARCH and can execute them
command.
Please connect it with the PIO port of the microcomputer.
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2012.12.10 Rev.002