Document
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 structure:Silicon Monolithic integrated circuit ○Radiation resistance design is not arranged
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●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 application(BU9450xAMUV)
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TSZ02201-0V2V0E600070-1-2 2012.12.10 Rev.003
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●Basic circuit application diagram -part2
Datasheet
This LSI builds in regulator for internal CORE power supply (1.5V). DVDD_M terminal of 52PIN 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.
Figure 2. an example of connection circuit application(BU9450xAKS2)
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TSZ02201-0V2V0E600070-1-2 2012.12.10 Rev.003
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Datasheet
●Difference of BU9450XA Series features
Item Package Number of pins Power supply
USB Host I/F
SD card I/F
iPod iPod automatic enumeration I2C command I/F (Slave) Patch cord download Change the Setting of timeout and retry mode in USB memory or SD card mount operation Audio line output Digital audio output Sample rate convertor clock Playable MP3 files Playable WMA files Playable AAC files Playable WAV files Browsing function
BU94502AMUV
BU94501AMUV
VQFN040V6060
40pin
3.3V (inner 1.5V regulator )
USB Full speed(12Mbps), USB mass storage class
SPI mode
SD, SDHC, MMC, mini-SDcard
Supported
Not supported *1
Supported
Not supported *1
Supported Supported
Supported
Supported I2S, EIAJ, SPDIF
Supported 16.9344MHz (*1) *.mp3, *.mp2, *.mp1
*.asf, *.wma *.m4a, *.3gp, *.mp4
*.wav Supported
BU94502AKS2
BU94501AKS2
SQFP-T52M
52pin
3.3V (inner 1.5V regulator )
USB Full speed(12Mbps), USB mass storage class
SPI mode
SD, SDHC, MC, mini-SDcard
Supported
Not supported *1
Supported
Not supported *1
Supported Supported
Supported
Supported I2S, EIAJ, SPDIF
Supported 16.9344MHz (*1) *.mp3, *.mp2, *.mp1
*.asf, *.wma *.m4a, *.3gp, *.mp4
*.wav Supported
*1 For using of BU94502AMUV and BU94502AKS2, It is necessary to become a licensee of Apple Inc. regarding "Made for iPod/iPhone/iPad License".
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●Block.