Desription
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.
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. *1
- ・ MP3 encode function contained. *2,*3,*10
- ・ MP3 decode function contained. *4
- ・ WMA decode function contained. *5
- ・ AAC decode function contained. *6,*7
- ・ WAV format file playing function contained. *7
- ・ Sample Rate Converter contained. *8
- ・ System Controller contained.
- ・ FAT analysis function contained.
- ・ CD-ROM I/F function and CD-ROM decoder function contained.
- ・ Browsing function of File Names, Folder Names on music playing contained.
- ・ ID3TAG and WMATAG and AACTAG Analysis.
- ・ Fast forward/backward playing function contained.
- ・ Resume function contained.
- ・ File data Reading/Writing function contained.
- ・ Program download function from external serial Flash ROM contained.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. *1
- ・ MP3 encode function contained. *2,*3,*10
- ・ MP3 decode function contained. *4
- ・ WMA decode function contained. *5
- ・ AAC decode function contained. *6,*7
- ・ WAV format file playing function contained. *7
- ・ Sample Rate Converter contained. *8
- ・ System Controller contained.
- ・ FAT analysis function contained.
- ・ CD-ROM I/F function and CD-ROM decoder function contained.
- ・ Browsing function of File Names, Folder Names on music playing contained.
- ・ ID3TAG and WMATAG and AACTAG Analysis.
- ・ Fast forward/backward playing function contained.
- ・ Resume function contained.
- ・ File data Reading/Writing function contained.
- ・ Program download function from external serial Flash ROM contained.
Rohm has developed a USB audio decoder IC which will provide audio playback of MP3 files from CD-ROM and USB memory using just a single chip.
As USB and SD memory cards become the de facto storage medium for audio and multimedia files. Rohm has a range of single-chip USB audio decoders for different file formats.
The BU94702AKV has a USB/SD memory card host functionality, MP3/AAC/WMA decoder, FAT file system, and a music search function (file browser) that allows track selection during playback.
Also, built-in LDO and DAC circuits are designed to simplify configuration of an audio system by supporting direct connection to power supply audio amp, and speakers.
The device is availabel in a VQFP80 package.
For more read: Rohm has single chip USB audio decoder
About The Author
Ibrar Ayyub
I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.
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