BU94605AKV Datasheet, PDF (66/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

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Datasheet
26.2 Status output
The operation information, such as internal statuses, play time, folders, files and Tags, is output using an I²C interface.
The statuses shown in Table33 Status Register Map are output.
When reading status via I²C, the OFFSET position is automatically incremented after reading byte data. However, by
issuing the I²C start condition, the OFFSET position is reset to OFFSET specified by the previous command.
To read statuses, two methods are available: to specify OFFSET of the status register map and read any bytes
continuously from the OFFSET position; and to read byte data by a command without specifying the OFFSET position.
Table 34 shows the status output commands.
Byte data, when reading via I²C, is output in Little Endian format.
When read over OFFSET=0x140, OFFSET does not return to 0x00, therefore the read value turns into an unfixed
value.
Table 33. Status Register Map
OFFSET
Status
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
(MSB)
(LSB)
0x00
STATUS1
ERROR SEARCH
BUSY MCHNG STOP PAUSE PLAY
0x01
0x02
STATUS2
STATUS3
IRPTO
USBINS
0
SDINS
STOP_INF
INIT_END PRECOM RES_ERR DEC_ERR
O
USBFILE SDFILE MDEVUSB MDEVSD PDEVUSB PDEVSD
0x03
STATUS4 SEL_TOC TINFUSB TINFSD SET_TAG ANA_TAG TAGINFO
0x04
0x05
STATUS5
0
SEL_USBS FBP
D
STATUS6 PRECOMS
TAT
FFP PLAYFILE
0x06
VOLINF
0
0
0
VOLINF
0x07
0x08
DOUTINF
PMODEINF
EQINF
REPEATIN
F
DOUTINF
SETNEXTI
NF
0x09
SEL_MP3
0
0
0
0
WDT_RFL 12MOUT SET_SOR SET_MP3
G
T
0x0A
0x0B
PSEC
PMINL
PSECH
PMINLH
PSECL
PMINLL
0x0C
PMINH
PMIHH
PMINHL
0x0D
0x0E
TSEC
TMINL
TSECH
TMINLH
TSECL
TMINLL
0x0F
TMINH
TMINHH
TMINHL
0x10
0x11
LANGL
LANGH
LANGL
LANGH
0x12
PFOLNL
PFOLNL
0x13
0x14
PFOLNH
PFILENFLL
PFOLNH
PFILENLL
0x15
PFILENFLH
PFILENLH
0x16
0x17
PFILENFHL
PFILENFHH
PFILENHL
PFILENHH
0x18
PFILENMLL
PFILENLL
0x19
0x1A
PFILENMLH
PFILENMHL
PFILENLH
PFILENHL
0x1B PFILENMHH
PFILENHH
0x1C
0x1D
TFOLMEML
TFOLMEMH
TFOLMEM
L
TFOLMEM
H
0x1E TFILEMEMLL
TFILEMEM
LL
0x1F
0x20
TFILEMEMLH
TFILEMEMHL
TFILEMEM
LH
TFILEMEM
HL
0x21 TFILEMEMHH
TFILEMEM
HH
0x22 BROWSESTAT ANA_ERR
0
0x23 NUMANAFOLLL
NUMANAF
OLLL
GET_PATH_E GET_TAG_EN GET_TAG_ID ANA_CUR
ND
D
0x24 NUMANAFOLL
H
NUMANAF
OLLH
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2012.12.10 Rev.002