BU9432-C1 Datasheet PDF - ETC


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BU9432-C1
ETC

Part Number BU9432-C1
Description USB host MP3 decoder
Page 13 Pages

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Semiconductor integrated circuit
BU9432-C1
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Product name : USB host MP3 decoder
Model : BU9432-C1
Outline drawing : Figure-1
Terminal block diagram : Figure-2
Feature
: BU9432-C1 is MP3 decoder IC which contains USB host function.
It contains a system controller, USB host control function, and MP3 decode function
necessary to compose USB Host player.
In addition, it is also possible to compose the set only of this 1chip by building the
headphone amplifier into.
MPEG Layer-3 audio decoding technology licensed from Fraunhofer IIS and Thomson.
Functional specification
Rev1.4



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Semiconductor integrated circuit
BU9432-C1
2/13
USB host controller
The USB2.0 Full speed HOST control function
Mass Storage Class
USB HUB is not supported
FAT analysis
FAT16 and FAT32 are supported
Number of folders unlimited
Number of files
Root folder Subfolder
FAT16 512 files 65534 files
FAT32 65534 files 65534 files
The folder depth limit is eight(including the root folder)
File extension : .MP3, .MP2, .MP1(.MP2, .MP1 are possible to select)
The memory size : 32M - 2TByte.
MP3 decoder
MPEG audio 1, 2, and 2.5
Layer 1, 2, and 3
Sampling rate : 8k, 16k, 32k, 11.025k, 22.05k, 44.1k, 12k, 24k, and 48kHz
Bit rate 8kbps-448kbps and VBR(Variable Bit Rate) (exclude a free format)
*The file of a bit rate is not playing by USB device type.
Sample rate converter
All of sample rates are converted to 44.1kHz by the polyphase filter operation
System controller
Key input (PLAY/ PAUSE / STOP/ FF / FB / Folder+ / +10 /Volume+ /Volume-)
Serial input (PLAY/ PAUSE / STOP/ FF / FB / Folder+ / Folder- / +10 / 10)
Serial output (status output, folder number, file number, playing time information)
Analyze Key and Serial command, and control USB device access, file analysis, MP3 decode, and headphone output
LED controller : Playing, Pausing,Access, Error
Audio output
HeadphoneAMP: 14mW/32
Remove POPnoise at power supply ON
Digital soft mute function
Menu key
Digital volume key and serial command valid/invalidity selection,
maximum level of digital volume when selecting invalid
MP2 and MP1 file playing selection
Hidden attribute file playing selection
Functional specification
Rev1.4



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Semiconductor integrated circuit
BU9432-C1
Absolute maximum ratings (Ta=25)
Item
Symbol
Rating
Unit
Power-supply voltage
(Analog block, IO)
VDD1MAX
4.5
V
Power-supply voltage
(CORE)
VDD2MAX
2.1
V
Terminal Voltage
Storage Temperature Range
Operating Temperature
Range
Allowable dissipation*1
VINOUT
Tstg
Topr
Pd
-0.3VDD1+0.3
-55+125
-4085
1000
V
mW
*1 For an operation with Ta=25or more, it shall be reduced 10mW per .
3/13
Operation conditions
Item
Power Supply Voltage (Analog
block, IO)
Power Supply Voltage (CORE)
Symbol
VDD1
VDD2
Rating
3.03.6
1.451.65
* This product is not designed for protection against radioactive rays.
Unit Applicable pins
V
DVDDIO, DCVDD,
DAVDD,AVDDC
V DVDD, BATT
Functional specification
Rev1.4



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Semiconductor integrated circuit
BU9432-C1
4/13
BU9432-C1
Lot No.
Fig.1 Outline drawing
Functional specification
Rev1.4




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