BU94605AKV Datasheet, PDF (28/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

BU94605AKV BU94607AKV BU94702AKV BU94705AKV
Datasheet
9.4 IRPTO
Interrupt output to microcomputer
Signal name
I/O
Function
IRPTO
O Interrupt output to microcomputer
Remarks
H: Interrupt, L: Not Interrupt
This is output to indicate that the LSI is now requiring interruption to the microcomputer.
Change from L to H shows that an interruption has occurred.
The contents of interruption change with the states where it is operating mode. The contents are shown below.
Please connect it with the interrupt port of the microcomputer.
State
PLAYER MODE
FILE RW MODE
File read
FILE RW MODE
File write
PLAY LIST MODE
CD-DA MODE
CD-ROM MODE
IPL WRITE MODE
Table 11. Interruption
Interruption
Contents
ERROR
FRDREADY
An interrupt occurs when memory connection error or
communication error.
Clear conditions; interruption is cleared by extraction and
insertion of a memory.
An interrupt occurs when a specification file is searched and
read-out is ready.
Clear conditions; interruption is cleared by data are read (block
unit).
FWRREADY
An interrupt occurs when read-in is ready with memory.
Clear conditions; interruption is cleared by data are write (block
unit).
ERROR
ENCEND
SEEK
IPLMODEEND
An interrupt occurs when memory connection error or
communication error.
Clear conditions; interruption is cleared by extraction and
insertion of a memory.
An interrupt occurs when encoding is completed and a file is
CLOSE(ed).
Clear conditions; interruption is cleared by file OPEN is carried
out.
An interrupt occurs when requiring necessary data (LBN).
Clear conditions; interruption is cleared by required data are
inputted.
An interrupt occurs when FLASH ROM rewriting end.
Clear conditions; interruption is cleared by reset.
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