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USB Audio Decoder ICs - BU94604BKV

ROHM's USB Audio Decoder ICs integrate a USB 2.0 host, SD memory card controller, AAC decoder, WMA decoder, MP3 decoder, Audio DAC amp, and a system controller all on a single chip, allowing easy playback of music stored in USB flash memory using an audio player. They can be easily added to virtually any audio device (i.e. CD player, mini-component stereo, portable player, car stereo) for greater functionality.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number | BU94604BKV-E2
Status | Active
Package | VQFP64
Unit Quantity | 1000
Minimum Package Quantity | 1000
Packing Type | Taping
RoHS | Yes

Specifications:

Vcc(Min.)[V]

3.0

Vcc(Max.)[V]

3.6

I/F

I2C BUS

Digital Audio I/F

I2S SPDIF

USB

USB2.0 Full Speed

SD

MMC SD / miniSD / microSD / SDHC

iPod

iPod 5G/iPod nano/iPod classic/iPod touch/iPhone/iPad

Display information

Number(Folder, File), Reproduction time, Name(Folder, File), Tag(Artist, Album, Title)

MP3

MPEG 1, 2, 2.5 LAYER 1, 2, 3

WMA

WMA9 Standard

AAC

MPEG4 AAC-LC

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

85

Features:

・BU94604KV is AAC+WMA+MP3 decoder IC in which a USB host I/F, SD memory card I/F,
    audio DAC and system control functions are built. Using a KEY or I²C interface
    command, the IC reads out a MP3 file written to a memory device having a USB
    I/F or a SD memory card. All the operations required before the data can be output
    to audio devices are incorporated into one chip.
・BU94604KV supports STAND ALONE MODE which is enabled by commands entered from
    the keyboard (hereinafter referred to as MODE1), AUTO SLAVE MODE which is
    enabled by commands entered from the master microcomputer, same as those
    entered from the keyboard, via the built+-in C60 I²C interface (hereinafter referred
    to as MODE2) and MANUAL SLAVE MODE which can send the memory device
    information to the master microcomputer via the I²C interface and completely
    control sequences such as a play sequence by the master microcomputer
    (hereinafter referred to as MODE3).
・I²C bus ⇔ USB protocol conversion function built into. Only MODE2 or MODE3
    corresponds.
・BU94604KV supports fast forward playing and fast backward playing with music.
・BU94604KV outputs folder names, file names, ID3TAG (V1.0, V1.1 V2.2 V2.3 and V2.4)
    information and WMA-TAG information and AAC-TAG(iTunes Meta-data)
    information via the I²C interface. This function is enabled only in MODE 2 and
    MODE 3.
・BU94604KV supports audio line output, audio serial three-line (I2S) output and digital
    audio interface (SPDIF) output.
・Reading a specified file data is possible from USB memory. *Only a file that exists in
    root folder corresponds.