BU94501AMUV Datasheet, PDF (11/73 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU9450xAxxx series
●Description of each block’s movement
-part2
Datasheet
7. FAT analysis
Supports FAT32, FAT16 and FAT12 file system.
Supports VFAT (long file name).
Supports multi-partition up to 1 partition.
Supports multi-drive up to 1 drive.
Supports playable folder hierarchies up to 16 hierarchies whose full path including the file name is within 260
characters.
Supports playable file extension of *.wav for WAV files.
Supports playable file extensions of *.m4a, *.3gp and *.mp4 for AAC files.
Supports playable file extensions of *.asf and *.wma for WMA files.
Supports playable file extensions of *.mp3, *.mp2 and*.mp1 for MP3 files. For *.mp2 and *.mp1, the function
allows you to select whether to play. Does not extinguish between upper case letters and lower case letters of file
extensions.
Up to 256 folders and 256 files can be sorted and played in the order of UNICODE when sorting functional
effective.
Can obtain 5 file names ahead from current music file.
Can obtain a folder name or file name within 128 bytes.
Supports 512, 1024, 2048 and 4096 bytes per sector.
Playable file size up to 2G-1 byte. A file over 2Gbyte is recognized as a playable file, too. But, it is for 2Gbyte
-1byte that it can play.
Supports the device size up to FAT specification (2T byte).
8. Control from master microcomputer (little endian order)
Can control from the master microcomputer using the I²C interface.
Controllable using commands of play, pause, stop, tune skip, tune forward, folder move, device change, volume
setting, repeat change, random play, digital audio output setting, sound effect setting and direct tune selection and
etc.
Can read information on internal status during play or stop, folder number, file number within the folder, play time,
total number of folders, total number of files, name of folder being played, name of file being played and TAG (title,
artist, album, genre), and etc.
9. MP3 decoder
⋅
Supports MPEG audio 1, 2 and 2.5.
⋅
Supports Layer1, 2 and 3.
⋅
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
⋅
Supports bit rate of 8 to 320 kbps and VBR (Variable Bit Rate). *Excluding the free format
⋅
Supports ID3TAG V1.0, V.1, 1, V2.2, V2.3 and V2.4.
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
10. WMA decoder
⋅
Supports Windows Media Audio 9 standard.
⋅
Not supports DRM files.
⋅
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k and 48 kHz.
⋅
Supports bit rate of 5 to 384 kbps and VBR (Variable Bit Rate).
⋅
Supports WMA-TAG.
⋅ (Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
11. AAC decoder
⋅
Supports MPEG4 AAC-LC (Audio stream).
⋅
Based on 3GPP TS 26.244 and iTunes.
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Supports File Type of m4a, mp4 and 3gpX. (X stands for any numeric value.)
⋅
Not supports DRM files.
⋅
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
⋅
Supports bit rate of 8 to 320kbps and VBR (Variable Bit Rate).
⋅
Supports AACTAG (iTunes Meta-data and 3GP Meta-data).
(Up to 128 bytes can obtain for album, artist, title and genre, respectively.)
*For files other than those encoded by iTunes, sound interruption may occur when skipping or forwarding to the
next tune if streams such as gaps and video data are contained in the file.
12. WAV play
⋅
Supports WAV format.
⋅
Supports sample rate of 8 k, 16 k, 32 k, 11.025 k, 22.05 k, 44.1 k, 12 k, 24 k and 48 kHz.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
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TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003