BU94601KV_12 Datasheet, PDF (38/70 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU94601KV BU94603KV BU94604BKV
Datasheet
0x00 -
SEL_12MOUT 2 0x58
0x01 -
SEL_WDT
0x00 -
2 0x5A
0x01 -
-
· This command stops 12MHz clock output from CLKOUT12
terminal.
· This command enables 12 MHz clock output from CLKOUT12
-
terminal.
- ^{· This command stops WDT.}
· This command writes “1” to STATUS WDT_RFLG.
-
SET_RPM
SET_
RPM_ATT
SET_
UPLOAD_
FILE1
· This command set up playtime and skiptime for fast forward
playing and fast backward playing. Fast forward and fast
backward playing repeat this cycle by making {playtime(M) +
skiptime(N) +error(O)} into 1 cycle. With an error, it depends on
the cajoled error between the minimum decoding unit and
playtime, and the real time which searches skiptime. Errors differ
by every file and every composition in memory.
6 0x5B 0x00 setting · This command set up that playtime is M[15:0]=[4th byte, 3rd
byte] and skiptime are N[15:0]=[6th byte and 5th byte]. Initial
value set playtime is 300 mili second=M[15:0]=[4 th byte=x01,
3rd byte=x2C] and skiptime is 2100 mili second=N[15:0]=[6 th
byte=x08, 5 th byte=x34].
When command set up to 0x0, setting value is initial value.
The playtime should set up 300ms or more, and skiptime should
set up below (playtime x16).
· This command set up the attenuation level under fast forward
and backward playing.
4
0x5B 0x01 setting 0x00
An attenuation level serves as (-6dB X [3rd byte]).
A setup can be specified from 0x00 to 0x10.As for an initial
value, 0x02=-12dB is set up. It becomes equivalent to MUTE by
setup of 0x10.
Specify the part of the first half of the file name of the file for File
Read Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to
8
0x51 0x51 NAME[0:5]
eight bytes.
SET_
UPLOAD_
FILE2
Specify the part of the latter half of the file name of the file for File
Read Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to
8
0x51 0x52
NAME[6:7]
EXT[0:2]
eight bytes.
Bury it by 0x00 when the file extension doesn't come up to three
bytes.
It targets neither the file name comparison since 0x00 of the end in
the comparison.
UPLOAD_
END
2 0x51 0x53 -
The File Read function is ended.
- _{Transmit after completing the file reading.}
The ACK timeout of the command under memory mount is set up.
The set point x100 (msec) is timeout. At the time, XX is upper byte
and YY is lower byte.
SET_TOUT_M 4 0x5D 0x07 0xYY 0xXX An initial value is 30 sec (YY=0x2C, XX=0x01), and maximum
value is 60 sec (YY=0x58, XX=0x02).If set point is over the
maximum value, this command is ignored.
Mount ERROR will be carried out if a timeout occur.
The ACK timeout of the commands at the time of PLAY or STOP or
PAUSE (except during mount) is set up.
The set point x100 (msec) is timeout. At the time, XX is upper byte
SET_TOUT_C 4 0x5D 0x08 0xYY 0xXX ^{and YY is lower byte.}
An initial value is 5 sec (YY=0x32, XX=0x00), and maximum value
is 60 sec (YY=0x58, XX=0x02). If set point is over the maximum
value, this command is ignored.
Communication ERROR will be carried out if a timeout occur.
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TSZ02201-0V2V0E600010-1-2
2012.07.12 Rev.001