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.|
|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|
|Operating Temperature (Min.)[°C]||-40|
|Operating Temperature (Max.)[°C]||85|
- ・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
・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
・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.