BU94603KV-E2 ROHM Semiconductor, BU94603KV-E2 Datasheet - Page 29

• Manufacturer Part Number: BU94603KV-E2
• Description: Interface - CODECs USB HOST MP3 DECODER
• Manufacturer: ROHM Semiconductor
• Type: USB Audio Decoderr

Specifications of BU94603KV-E2

• Rohs: yes
• Conversion Rate: 48 kSPs
• Interface Type: I2C
• Number Of Dacs: 3
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: VQFP-64
• Minimum Operating Temperature: - 40 C
• Snr: 96 dB
• Supply Current: 65 mA
• Thd Plus Noise: 0.02 %

© 2012 ROHM Co., Ltd. All rights reserved.
BU94603KV
www.rohm.com
Command name
CHNG_DEV
VII.3 MODE2
RANDOM
REPEAT
ABORT
PAUSE
STOP
VOL+
PLAY
VOL-
VII.3.1 Command operation
You can operate commands via the I
SEL_SLAVE to L. The length of command to be sent varies depending on which command is selected.
Table VII.3.1.1 shows the command specifications.
Table VII.3.1.2 shows enabled/disabled state of each command.
byte length
Command
2
0x50
1st
0x0C
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
2nd
Command
Table VII.3.1.1 Command Operation Description
3rd
-
-
-
-
-
-
-
-
-
2
C serial interface. When using the LSI in MODE2, it can be operated by setting
4th~
-
-
-
-
-
-
-
-
-
· When receiving “PLAY” command during stop, the master starts playing
· When receiving “PLAY” command during pause, the master restarts
· When a state which disables MP3 decoding for more than 5 seconds
· When receiving “PLAY” command during fast forward (or backward)
· When receiving “PAUSE” command during play, the master stops playing
· When receiving “STOP” command during play, pause or file search, the
· When receiving “STOP” command during fast forward (or backward)
· “STOP” command can be received even during BUSY.
· When SEL_VOL is set to H, “VOL+” command is enabled.
· When receiving “VOL+” command, the master controls sound volume.
· Sound volume can be controlled at 32 steps from -∞ (minimum volume)
· When SEL_VOL is set to H, “VOL-“command is enabled.
· When receiving “VOL-“command, the master controls sound volume.
· Sound volume can be controlled at 32 steps from -∞ (minimum volume)
· This command selects the mode during repeat.
· REPEAT command toggles like: “repeat all tunes in memory”  “repeat
· When STATUS RPT_OFF is set as ON by "REPRAND" command,
· When selecting “repeat within folder”, the master repeats AAC/WMA/MP3
· The initial setting is “repeat all tunes in memory”.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
· This command is as same as the “REPEAT” command in MODE1.
· This key plays the range of  128 files from the current one being played
· When STATUS RPT_OFF is set as ON by "REPRAND" command,
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
· This command is as same as the “RANDOM” command in MODE1.
· The command selects the device between USB memory and SD memory
· Stop after selecting the device at the top tune of the device.
· REPEAT and RANDOM settings return to the initial values.
· This command interrupts Tag analysis.
· It interrupts Tag analysis only the file is being played.
the AAC/WMA/MP3 file currently selected. The order sorted from the
root folder is initially set.
playing the file from that point.
during play, status “DECO_ERR” is set to H. MP3 decoding is continued.
playing, the master restarts normal playing the file from current point.
the AAC/WMA/MP3 files temporarily.
master stops playing the AAC/WMA/MP3 file.
playing, the master stops playing the file.
to 0dB (maximum volume).
to 0dB (maximum volume).
one tune”  “repeat within folder”.
REPEAT command toggles like: “all play in memory”  “one file play” 
“play within folder”. In this mode, it stops upon completion of playing.
files within the folder being played.
will be enabled.
in the order of sort at random.
REPEAT command toggles like: “one random file play”  “all play with
random in memory”. In this mode, it stops upon completion of playing.
will be enabled.
card. To do this, both devices should be connected or one device
should correspond to the other (USB to SD or SD to USB). Otherwise,
this key operation is ignored.
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Operation description
Technical Note
2012.07 - Rev.B