BU94601KV_12 Datasheet, PDF (53/70 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU94601KV BU94603KV BU94604BKV
Datasheet
SET_RPM
· 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
6
0x5B 0x00
setting
composition in memory.
· 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.
SET_RPM_ATT
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.
SET_
8
UPLOAD_FILE1
0x51 0x51
NAME[0:5]
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 eight bytes.
SET_
8
UPLOAD_FILE2
0x51 0x52
NAME[6:7]
EXT[0:2]
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 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
SET_TOUT_M
4
0x5D
0x07 0xYY 0xXX
byte and YY is lower byte.
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
SET_TOUT_C
byte and YY is lower byte.
4
0x5D 0x08 0xYY 0xXX _{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.
The wait time after bus reset is set up at the time of USB
SET_USB_
R_WAIT
memory recognition.
4 0x5D 0x09 0xXX 0x00 The set point (XX) x200 (msec) is wait time.
An initial value is 600 msec (XX=0x03), and maximum value
is 51.2 sec (XX=0xFF).
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TSZ02201-0V2V0E600010-1-2
2012.07.12 Rev.001