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Rohm Semiconductor Electronic Components Datasheet

BU94501AKS2 Datasheet

USB Audio Decoder LSI

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Datasheet
USB Audio Decoder LSI Series
AAC/WMA/MP3
+SD Memory Card + iPod
BU9450xAxxx Series
Description
BU9450xAxxx series are WAV/AAC/WMA/MP3 decoder
LSI which contains USB host, SD card I/F, audio DAC,
system controller, regulator for internal CORE power
supply.
Package W(Typ.) x D(Typ.) x H(Max.)
Features
„ USB2.0 Full Speed host I/F function contained.
„ SD card I/F function contained.
„ I2C format I/F function contained.
„ Protocol conversion from I2C to USB HID or from USB
HID to I2C.
(BU94502AMUV and BU94502ASK2 only)
„ MP3 decode function contained. (Available for
MPEG1, 2 and 2.5, Layer 1, 2 and 3)
„ WMA decode function contained. (Available for WMA9
standard and not available for DRM)
„ AAC decode function contained. (available for
MPEG4 AAC-LC and not available for DRM)
„ WAV format file playing function contained.
„ Sample Rate Converter contained.
„ System Controller contained.
„ FAT analysis function contained.
„ Browsing function of File Names, Folder Names on
music playing contained.
„ ID3TAG and WMATAG and AACTAG Analysis.
„ Fast forward playing and fast backward playing
function contained.
„ Resume function contained.
„ Reading a specified file data is possible from
connected memory.
„ LUN is selectable.
„ Sound Effect function contained.
„ Digital Audio Out function contained.
(I2S, EIAJ, S/PDIF)
„ Audio DAC contained.
„ Regulator for internal CORE power supply contained.
VQFN040V6060
6.00mm x 6.00mm x 1.00mm
SQFP-T52M
12.00mm x 12.00mm x 1.50mm
Applications
Audio products, etc
Line up
Part number
BU94501AMUV
BU94501AKS2
BU94502AMUV
BU94502AKS2
iPod
Not supported
Supported
Package
VQFN040V6060 Reel of 2000
SQFP-T52M
Tray of 1000
VQFN040V6060 Reel of 2000
SQFP-T52M
Tray of 1000
Ordering part number
BU94501AMUV-E2
BU94501AKS2
BU94502AMUV-E2
BU94502AKS2
Product structureSilicon Monolithic integrated circuit Radiation resistance design is not arranged
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
1/69
TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003


Rohm Semiconductor Electronic Components Datasheet

BU94501AKS2 Datasheet

USB Audio Decoder LSI

No Preview Available !

BU9450xAxxx series
Basic circuit application diagram -part1
Datasheet
This LSI builds in regulator for internal CORE power supply (1.5V).
DVDD_M terminal of 10PIN connect to bypass condenser and don’t connect to power supply (3.3V)
Please confirm the optimal oscillation circuit parameters applicable to your systems or products with the oscillator manufacturer in advance.
VQFN040V6060 package exposes its frame of the backside of package. Note that this part is assumed to use after providing heat
dissipation treatment to improve heat dissipation efficiency. Try to occupy as wide as possible with heat dissipation pattern not only on the
board surface but also the backside.
Figure 1. an example of connection circuit applicationBU9450xAMUV
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/69
TSZ02201-0V2V0E600070-1-2
2012.12.10 Rev.003


Part Number BU94501AKS2
Description USB Audio Decoder LSI
Maker Rohm
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