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PDF BU94604BKV Data sheet ( Hoja de datos )
| Número de pieza | BU94604BKV | |
| Descripción | AAC/WMA/MP3 + SD Memory Card + iPod | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de BU94604BKV (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Datasheet
USB Audio Decoder LSI Series
AAC/WMA/MP3
+SD Memory Card + iPod
BU94601KV BU94603KV BU94604BKV
●Description
BU94601KV / BU94603KV / BU94604BKV are AAC+
WMA + MP3 decoder IC which contains USB host, SD
card I/F, audio DAC, system controller, and regulator for
internal CORE power supply.
●Features
USB2.0 Full Speed host I/F function contained.
Protocol conversion from I2C to USB HID or from
USB HID to I2C. (Only BU94604BKV)
SD card I/F function contained.
I2C I/F function contained.
FAT analysis function contained.
MP3 decode function contained. (available for
MPEG1, 2 and 2.5, Layer 1, 2 and 3)
WMA decode function contained.
(Except BU94601KV)
Available for WMA9 standard and not available for
DRM
AAC decode function contained.
(Except BU94601KV)
Available for MPEG4 AAC-LC and not available for
DRM
Sample Rate Converter contained.
System Controller contained.
LED Controller contained.
KEY matrix Controller contained.
Stand Alone mode contained.
External processor can control. (Slave mode)
Audio DAC contained.
Sound Effect function contained.
Digital Audio Output(I2S, S/PDIF) function contained.
File Name, Folder Name Sorting.
ID3TAG and WMATAG and AACTAG Analysis.
Reading a specified file data is possible from USB
memory.
LUN is selectable.
Regulator for internal CORE power supply
contained.
VQFP64pin(0.5mm pitch)
●Package W(Typ.) x D(Typ.) x H(Max.)
VQFP64
12.00mm x 12.00mm x 1.60mm
●Applications
Audio products, etc
●Line up
Part number
BU94601KV
BU94603KV
BU94604BKV
Format
MP3
AAC/WMA/MP3
AAC/WMA/MP3
iPod
Not supported
Supported
Package
VQFP64 Reel of 2000
VQFP64 Reel of 2000
VQFP64 Reel of 2000
Ordering part number
BU94601KV-ZAE2
BU94603KV-ZAE2
BU94604BKV-ZAE2
○Product structure：Silicon Monolithic integrated circuit ○Radiation resistance design is not arranged
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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BU94601KV BU94603KV BU94604BKV
●Block diagram
Datasheet
16.9344
MHz
3.3V
USB
I/F
SD
I/F
File
System
(FAT16/32)
USB/
System
PLL
1.5V LDO
Data
Buffer
MP3/WMA/
AAC Decoder *
TAG Analysis
SRC
I2S
OUT
SPDIF
OUT
System Controller
Audio
DAC
Command
I/F (I2C)
I2S Out
SPDIF Out
Power
AMP
/SD Title 5. SONG_E
01:10 Album ALBUM Z
Artist ARTIST A
User I/F
*BU94601KV contains only MP3 decoder
MCU
Main Control Block
Figure 4. Block diagram
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
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5 Page 
BU94601KV BU94603KV BU94604BKV
Datasheet
●Description of each block’s movement-part2
5. FAT analysis
· Supports FAT16 and FAT 32.
· Supports VFAT (long file name).
· Supports multi-partition up to 1.
· The maximum number of playable folders within each folder is 65534.
· The maximum number of playable files within each folder is 65534.
· The maximum number of playable folders within each device is 65534.
· The playable folder hierarchy is up to 8 layers containing the root directory.
· The playable file extension supports *.m4a, *.3gp, and *.mp4 for AAC, *.wma and *.asf for WMA, *.mp3, *.mp2, and *.mp1 for
MP3. For *.mp2 and *.mp1, play enabled/disabled can be selected. Upper case letters and lower case letters are not
distinguished in the file extension. (BU94601KV supports only *.mp3, *.mp2, and *.mp1.)
· Sorts and plays up to 100 folders and 100 files in the order of UNICODE.
· Possible to obtain up to 64 bytes as the folder name or file name.
· Supports 1 sector of 512, 1024, 2048 and 4096 bytes.
· Playable file size is up to 2Gbyte-1 byte. Although a file over 2Gbyte is recognized as a playable file, 2Gbyte -1byte
part of the file is playable.
6. MP3 decoder
· Supports MPEG audio 1, 2 and 2.5.
· Supports Layer 1, 2 and 3.
· Supports sample rates 8k, 16k, 32k, 11.025k, 22.05k, 44.1k, 12k, 24k and 48kHz.
· Supports bit rate 8 to 320 kbps and VBR (Variable Bit Rate). *Except free format.
· Supports ID3TAG V1.0, V1.1, V2.2, V2.3 and V2.4.
(Up to 64 bytes can be obtained for the names of album, artist, and title.)
7. WMA decoder (BU94601KV doesn’t support.)
· Supports Windows Media Audio 9 standard.
· Not supports DRM.
· Supports sample rates 8k, 16k, 32k, 11.025k, 22.05k, 44.1k, and 48kHz.
· Supports bit rate 5 to 384 kbps and VBR (Variable Bit Rate). *Except free format.
· Supports WMA-TAG.
(Up to 64 bytes can be obtained for the names of album, artist, and title.)
8. AAC decoder (BU94601KV doesn’t support.)
· Supports MPEG4 AAC-LC encoded by iTunes.
· Not supports DRM.
· Supports sample rates 8k, 16k, 32k, 11.025k, 22.05k, 44.1k, 12k, 24k and 48kHz.
· Supports bit rate 8 to 320 kbps and VBR (Variable Bit Rate).
· Supports AAC-TAG(iTunes Meta-data).
(Up to 64 bytes can be obtained for the names of album, artist, and title.)
· The playable file extension supports *.m4a, *.3gp, and *.mp4
· Based on 3GPP TS 26.244.
· Supports file type of m4a, mp42, and 3gpX (numbers with arbitrary X).
*About except for the file encoded by iTunes, when the stream of a gap or video data is included in the file,
it may skip to the following music or skipping may be carried out.
9. Sample rate converter
· Converts all the supported sample rates to 44.1 kHz using a poly-phase operation.
10. System controller
· Controls all the system operations including KEY input, LED output, interface control with the master microcomputer,
USB device access, SD card access, FAT analysis, sort function, MP3 decode, WMA decode and audio output.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/66
TSZ02201-0V2V0E600010-1-2
2012.07.12 Rev.001
11 Page | ||
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