BU94601KV_12 Datasheet, PDF (10/70 Pages) Rohm – AAC/WMA/MP3 +SD Memory Card + iPod

BU94601KV BU94603KV BU94604BKV
Datasheet
●Description of each block’s movement-part1
· BU94601KV/BU94603KV/BU94604BKV are 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. *BU94601KV supports only MP3.
· Supporting 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 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 and MODE3 of BU94604BKV.
· Supporting fast forward playing and fast backward playing with music.
· Supporting 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.
· Supporting audio line output, digital audio output (I²S, SPDIF).
· Reading a specified file data is possible from USB memory. *Only a file that exists in root folder corresponds.
1. USB host I/F
· Builds in the USB Full speed (12 Mbps) HOST control function.
· Supports the USB mass storage class.
· Convert the protocol from I²C from USB(HID) and USB(HID) to I²C when communicating with the master
microcomputer.*
· An isochronous IN transfer function to 192 byte/Frame is built into.*
. Interrupt IN transfer function is built into.*
. It doesn't correspond to external HUB.
* Only the device with two CONFIGURATIONS or more. Only BU94604BKV.
2. SD card I/F
· Supports the SPI mode.
· Supports the MMC and mini-SD cards.
· Supports the SDHC cards.
· Supports the SD ver1.01 (file system).
· Does not support CPRM.
3. I²C I/F
· Communicates with the master microcomputer using an I²C interface format.
· Supports the standard mode (100 kbps) and fast mode (400 kbps).
· Supports a 7-bit address.
· Can select four types of slave addresses.
4. Audio output
· 1bit-DAC output
· Builds in the digital soft mute function.
· Supports digital audio output (I²S, SPDIF).
· Builds in sound effects of POPS, JAZZ, ROCK, CLASSIC, R&B and BassBoost.*
* Only audio line output is enabled.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
10/66
TSZ02201-0V2V0E600010-1-2
2012.07.12 Rev.001