BU94605AKV Datasheet, PDF (61/84 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card +CD-ROM+MP3 Record

BU94605AKV BU94607AKV BU94702AKV BU94705AKV
Datasheet
CD-DA
START_ENCODE
*1
261 0x64 0x01 0x00 0x00 ・This command specifies the full path, name and update date information
of the file to be written during encode, opens the file, and starts
encoding.
・After receiving the command and opening the file, the LSI brings the
data into the internal buffer and soon starts encoding it sequentially.
・Set the update date information at the 5^th-10^th bytes in BCD format in the
order of year (upper), year (lower), month, day, hour, and minute. If all
the data of the update date information is set to 0x00, the LSI considers
that 0x20, 0x09, 0x01, 0x01, 0x12, and, 0x00 are specified when
processing the data.
・The file name is set at the 11^th-261st bytes. *3
・If the external memory is set to “file write enabled”, and the file name is
not set (0x00), the LSI will not accept the command.
・If any files having the same name exist, the LSI append a number (1,
2….) to the end of each file name.
・By default, the file is not opened. The encode function is disabled.
STOP_ENCODE
*1
4 0x64 0x02 0x00 N ・This command terminates encoding and closes the file.
・Select the operation for closing files at the 4^th byte. Select N at the 4^th
byte from the following. Any other settings will not accept the
command.
N=0x00: Leaves the file and closes it.
N=0x01: Deletes the file and closes it.
・By default, N=0x00: "Leaves the file and closes it" is set.
SET_COMP_MOD 4 0x64 0x03 0x00 N ・This command sets the 3 pair data comparison and connection function.
E
・Select N at the 4^th byte from the following. Any other settings will not
accept the command.
*1
N=0x00: Disables the 3 pair data comparison and connection function.
N=0x01: Enables the 3 pair data comparison and connection function.
・After receiving the command with “enabled” setting, the LSI compares
the data when the input data is valid, and brings the data into the internal
buffer when the 3 pair data is matched.
・After matching the data and starting fetching it into the internal buffer,
the LSI disables the comparison and connection function.
・When the command is set to “disabled”, the LSI brings the input data
into the internal buffer if it is valid.
・By default, the comparison and connection function is disabled.
SET_ENCODE_M
ODE
*1
4 0x64 0x04 N
M ・This command sets the encode format and the play status during
encode.
・Set the encode format with N at the 3^rd byte. Select N from the
following. Any other settings will not accept the command.
N=0x00: Writes to MP3 external memory (USB, SD).
N=0x01: -(Not used)
N=0x02: Writes to WAV external memory (USB, SD).
N=0x03: -(Not used)
・Set the play status during encode with M at the 4^th byte. Select M at
the 4^th byte from the following. Any other settings will not accept the
command.
M=0x00: Does not play.
M=0x01: - ,
M=0x02: -
M=0x03: Input through (Thins out pre-encoded input data internally by
44.1 kHz and outputs it to DAC.) The voice is not output while the
comparison connection is operating.
・By default, N=0x00: "Writes to MP3 external memory (USB,SD)", and
M=0x00: "Does not play" are set.
・Do this setting before opening the encode file (before
START_ENCODE). Any change made after opening the file will not be
accepted.
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TSZ22111・15・001
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TSZ02201-0V2V0E600090-1-2
2012.12.10 Rev.002