BU94501AMUV Datasheet, PDF (53/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
Datasheet
Command name
Com
mand
Byte
length
Command
1st 2nd
Table 12. Status Output Commands
Status
STATUS
3rd 4th The
number of
output
bytes
READ_BUFF
READ_STATUS
READ_PSET
READ_PTIME
READ_LANG
READ_PNUM
READ_TNUM
READ_FNUM
READ_PFILE_NAME
4 0x6C 0x00 N
M Arbitrary ・Output the arbitrary number data of bytes from the OFFSET position where
the status register map was specified.
・OFFSET is 3rd and 4^th byte. It is specified as a byte by Little Endian (M, N=
0x00, 0x00 to 0x01, 0xFF).
4 0x6D 0x00 0x00 0x00
6
・Output about internal status.
・Output about OFFSET 0x00-0x05 of a status buffer.
4 0x6D 0x00 0x01 0x00
4
・Output about setting information.
・Output about OFFSET 0x06-0x09 of a status buffer.
4 0x6D 0x00 0x02 0x00
6
・Output about Playing time information.
・Output about OFFSET 0x0A-0x0F of a status buffer.
4 0x6D 0x00 0x02 0x01
2
・Output about TAG character code information.
・Output about OFFSET 0x10-0x11 of a status buffer.
4 0x6D 0x00 0x02 0x02
10
4 0x6D 0x00 0x02 0x03
6
4 0x6D 0x00 0x02 0x04
4
・Output about the number under Playing.
・Output about OFFSET 0x12-0x1B of a status buffer.
・An exact value of the number of total files and folders in memory
cannot be acquired when music is specified by cursor and access
data, such as a PLAY_CURSOR command.
・Output about the file in a memory, and the number of folders.
・Output about OFFSET 0x1C-0x21 of a status buffer.
・Output the number of files which is in a folder during the present Playing.
4 0x6D 0x00 0x03 N
130
・Output the file name of the file of the +Nth file during the present Playing.
Specify N from 0x00 to 0x03. N=0x00 is the present file.
Output is enabled only when the Nth file is within the same folder where the
one being played resides. If the Nth file is in a different folder, “0” is output
・Output data has the proposed data ID (2 bytes). See 16. File Name, Folder
Name, TAG Information for the output format.
READ_PFOL_NAME
4 0x6D 0x00 0x04 0ｘ00 130
READ_PFILE_TAG
4 0x6D 0x00 0x05 N
130
READ_RESUME_INFO 4 0x6D 0x00 0x06 0x00
42
READ_DEV_FREE
4 0x6D 0x00 0x07 N
8
READ_DEVDESC
4 0x6D 0x00 0x08 0x00
18
READ_CONDESC
READ_INQIRY
4 0x6D 0x00 0x08 0x01
32
4 0x6D 0x00 0x08 0x02
32
・Output the folder name of the file being played.
・Output data has the proposed data ID (2 bytes). See 6.4.6 for the output
format.
・Outputs the data which is written to TAG of the file being played.
ï½¥Specify TAG type with 0xN at the 4^th bytes. Select N at the 4^th byte from the
following. Any other settings will not accept the command.
N=0x00: TITLE , N=0x01: ARTIST ,
N=0x02: ALBUM , N=0x03: GENRE
・Output data has the preposed data ID (2 bytes). See 16. File Name, Folder
Name, TAG Information for the output format.
・Outputs the data required to execute resume play.
・The data is output in Little Endian format.
・See 6.4.5 for the output format.
・Outputs the free space analysis results of the file analyzed by the
GET_DEV_FREE command.
・Specify the space type to be output with N at the 4^th byte. Select N at the 4^th
byte from the following. Any other settings will be considered to specify
N=0x01.
N=0x00: Outputs the free space of the selected media by the byte.
N=0x01: Outputs the TOTAL space of the selected media by the byte.
・If the GET_DEV_FREE command has not been sent, this command outputs
“0”.
・Output a Device Descriptor value when the USB memory is inserted and
chosen.
・Vendor ID and Product ID are the following offset.
0x08：Vendor ID Lower byte
0x09：Vendor ID Upper byte
0x0A：Product ID Lower byte
0x0B：Product ID Upper byte
・Output a Configuration Descriptor value when the USB memory has been
recognized.
・32 bytes from the head of top Configuration Descriptor is outputted.
・Output a MSC Inquiry value when the USB memory has been recognized.
・ Vender identification (ASCII) and Product identification (ASCII) are the
following offset.
0x08-0x0F Vender identification(ASCII)
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2012.12.10 Rev.003