BU94601KV Functional Specifications
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BU94601KV
Functional Specifications
Target Spec
ＲＯＨＭ System Audio Team
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Table of Contents
I.
FEATURES ....................................................................................................................4
I.1 USB HOST I/F ............................................................................................................................................................ 4
I.2 SD CARD I/F............................................................................................................................................................... 4
I.3 I2C I/F....................................................................................................................................................................... 4
I.4 AUDIO OUTPUT............................................................................................................................................................ 4
I.5 FAT ANALYSIS ............................................................................................................................................................. 4
I.6 MP3 DECODER ........................................................................................................................................................... 5
I.7 SAMPLE RATE CONVERTER ........................................................................................................................................... 5
I.8 SYSTEM CONTROLLER ................................................................................................................................................. 5
I.9 KEY MATRIX CONTROLLER ........................................................................................................................................... 5
I.10 LED CONTROLLER .................................................................................................................................................... 5
I.11 CONTROL FROM THE MASTER MICROCOMPUTER ............................................................................................................ 5
I.12 FUNCTION SELECTION ................................................................................................................................................ 5
I.13 FILE READ FUNCTION IN USB MEMORY ........................................................................................................................ 5
II.
OVERVIEW ...................................................................................................................6
II.1 TERMINAL LAYOUT DRAWING ........................................................................................................................................ 6
II.2 TERMINAL SPECIFICATIONS .......................................................................................................................................... 7
II.3 TERMINAL EQUIVALENT CIRCUIT DIAGRAM ...................................................................................................................... 9
III.
ABSOLUTE MAXIMUM RATING AND OPERATING CONDITIONS.........................10
III.1 ABSOLUTE MAXIMUM RATING..................................................................................................................................... 10
III.2 OPERATING CONDITIONS.......................................................................................................................................... 10
IV.
ELECTRICAL SPECIFICATIONS.............................................................................. 11
V.
I/O SIGNAL SPECIFICATIONS ..................................................................................12
V.1 CLOCK AND RESET ................................................................................................................................................... 12
V.2 SEL_SLAVE .......................................................................................................................................................... 12
V.3 SEL_MP3 .............................................................................................................................................................. 12
V.4 SEL_DOUT ........................................................................................................................................................... 13
V.5 SEL_VOL .............................................................................................................................................................. 13
V.6 SEL_APLAY .......................................................................................................................................................... 14
V.7 SEL_UTPKT.......................................................................................................................................................... 14
V.8 AUDIO OUTPUT......................................................................................................................................................... 14
V.9 MUTE CONTROL OUTPUT ......................................................................................................................................... 14
V.10 KEY INPUT FORMAT................................................................................................................................................ 15
V.11 I2C INTERFACE FORMAT .......................................................................................................................................... 15
V.11.1 I2C protocol ................................................................................................................................................. 15
V.11.2 Slave address.............................................................................................................................................. 16
V.11.3 Write protocol from master .......................................................................................................................... 16
V.11.4 Read protocol to master .............................................................................................................................. 16
V.12 I2S FORMAT .......................................................................................................................................................... 17
V.13 SPDIF FORMAT ..................................................................................................................................................... 18
V.14 USB I/F................................................................................................................................................................ 19
V.15 SD I/F .................................................................................................................................................................. 19
V.16 MCHNG............................................................................................................................................................... 19
V.17 BUSY .................................................................................................................................................................. 19
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VI.
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FUNCTION/OPERATION EXPLANATION ................................................................20
VI.1 FILE DETECTION...................................................................................................................................................... 20
VI.1.1 Function ....................................................................................................................................................... 20
VI.1.2 Playable file.................................................................................................................................................. 21
VI.1.3 Playing sequence......................................................................................................................................... 21
VI.1.4 Folder/file sort .............................................................................................................................................. 21
VI.2 MODE1 ................................................................................................................................................................ 23
VI.2.1 KEY command operation ............................................................................................................................. 23
VI.2.1.1 KEY SCAN (Single Mode) .................................................................................................................... 23
VI.2.1.2 KEY SCAN (Hold Mode) ....................................................................................................................... 23
VI.2.1.3 KEY operation....................................................................................................................................... 25
VI.2.2 LED operation .............................................................................................................................................. 26
VI.3 MODE2 ................................................................................................................................................................ 27
VI.3.1 Command operation .................................................................................................................................... 27
VI.3.3 Equalizer ...................................................................................................................................................... 41
VI. 3.4 Resume information.................................................................................................................................... 44
VI. 3.5 Language Code Information........................................................................................................................ 44
VI.4 MODE3 ................................................................................................................................................................ 45
VI.4.1 Command operation .................................................................................................................................... 45
VI.4.2 Status output ................................................................................................................................................ 50
VI.4.3 Folder information/File information............................................................................................................... 54
VI. 4.4 Language Code Information........................................................................................................................ 54
VI.5 WATCHDOG TIMER .................................................................................................................................................... 55
VII.
REVISION HISTORY ................................................................................................56
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Features
◊
◊
◊
◊
◊
◊
BU94601KV is 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 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).
BU94601KV supports fast forward playing and fast backward playing with music.
BU94601KV outputs folder names, file names and ID3TAG (V1.0, V1.1 V2.2 V2.3 and V2.4) information via the
I2C interface. This function is enabled only in MODE 2 and MODE 3.
BU94601KV 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.
I.1
USB host I/F
· Builds in the USB Full speed (12 Mbps) HOST control function.
· Supports the USB mass storage class.
. It doesn't correspond to external HUB.
I.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.
I.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.
I.4
Audio output
· 1bit-DAC output
· Builds in the digital soft mute function.
· Supports the I2C format and digital audio interface (SPDIF) audio output.
· Builds in sound effects of POPS, JAZZ, ROCK, CLASSIC, R&B and BassBoost.*
* Only audio line output is enabled.
I.5
FAT analysis
· Supports FAT16 and FAT 32.
· Supports VFAT (long file name).
· Supports multi-partition up to 1.
· The maximum number of playable folders within each folder is 65534.
· The maximum number of playable files within each folder is 65534.
· The maximum number of playable folders within each device is 65534.
· The playable folder hierarchy is up to 8 layers containing the root directory.
· The playable file extension supports *.mp3, *.mp2, and *.mp1. For *.mp2 and *.mp1, play enabled/disabled can be
selected. Upper case letters and lower case letters are not distinguished in the file extension.
· Sorts and plays up to 100 folders and 100 files in the order of UNICODE.
· Can obtain up to 64 bytes as the folder name or file name.
· Supports 1 sector of 512, 1024, 2048 and 4096 bytes.
· Supports up to 2G-1 bytes as the file size.
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I.6
MP3 decoder
· Supports MPEG audio 1, 2 and 2.5.
· Supports Layer 1, 2 and 3.
· Supports sample rates 8k, 16k, 32k, 11.025k, 22.05k, 44.1k, 12k, 24k and 48kHz.
· Supports bit rate 8 to 320 kbps and VBR (Variable Bit Rate). *Except free format.
· Supports ID3TAG V1.0, V1.1, V2.2, V2.3 and V2.4.
(Up to 64 bytes can be obtained for the names of album, artist, and title.)
I.7
Sample rate converter
· Converts all the supported sample rates to 44.1 kHz using a poly-phase operation.
I.8
System controller
· Controls all the system operations including KEY input, LED output, interface control with the master
microcomputer, USB device access, SD card access, FAT analysis, sort function, MP3 decode and audio
output.
I.9
KEY matrix controller
· Controls 12 types of KEY inputs: play/pause, stop, tune forward/fast forward playing, tune backward/fast
backward playing, folder forward, folder backward, 10-tune forward, volume up, volume down, repeat play,
random play and device selection.
I.10
·
I.11
LED controller
Controls 7 types of LED outputs: play/pause, error, memory accessing, random playing, repeat playing, USB
selection and SD selection
Control from the master microcomputer
Control from the master microcomputer is enabled using the I2C interface.
Through the command operations, the following can be controlled: play, pause, stop, tune forward, tune
backward, fast forward playing, fast backward playing, folder forward, folder backward, 10-tune forward,
10-tune backward, volume up, volume down, device selection, volume setting, repeat selection, random play,
digital audio output setting, sound effect setting, resume data setting and direct tune selection data setting.
· Controls the following: playing status output, pause, stop, searching, error, folder number, file number within
folder, play time information, number of total folders, number of total files, name of folder being played, name
of file being played, ID3TAG (title, artist and album), resume data and direct tune selection data (MODE3).
·
·
I.12
·
·
·
·
·
·
I.13
Function selection
Selects MODE1 or MODE2/3 (SEL_SLAVE=H: MODE1, L: MODE2/3).
Selects MPEG Audio Layer (SEL_MP3=H: play MP3 only, L: play MP1/MP2/MP3)
Digital audio output selection (SEL_DOUT=H: output OFF, L: output ON)
Sound volume operation selection (SEL_VOL=H: volume adjustable, L: volume not adjustable MAX output)
Selects operation at power ON to check device (SEL_APLAY=H: stop, L: play). *Enabled in MODE 1 only.
Selects MODE2 or MODE3 (SEL_SMAN=H: MODE2, L: MODE3). *Enabled in MODE 2/3 only.
File Read function in USB memory
· The specified data of file that exists in the root folder of the USB memory reading is possible.
* The file name corresponds only by 8.3 forms. (The wild-card cannot be used.)
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BU94601KV Functional Specifications
Overview
LDACO
VCDACO
RDACO
DAVSS
VSS_PLL
XOUT_PLL
XIN_PLL
TEST_PLL
VDDPLL
VOREFI
REXTI
AVSSC
USB_DP
USB_DM
Terminal layout drawing
DAVDD
II.1
AMUTE
II.
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48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
LED_ERROR/TEST9 49
Audio DAC
LED_PLAY/TEST10 50
32 AVDDC
USB
PHY
PLL
31 ATEST1
LED_PSD/TEST11 51
30 TEST8
USB
Controller
LED_PUSB/TEST12 52
Sound Effecter
LED_ACCESS 53
29 TEST7
28 TEST6
LED_RANDOM 54
27 DVDD_M2
LED_REPEAT 55
26
FAT
File system
TEST13 56
DVDD_M1 57
TEST14 58
25 TEST4
MP3
Decoder
LDO
24 DVSS
23 SD_CS
SD I/F
Controller
TEST15 59
22 SD_DI
TEST16 60
21 SD_CLK
TEST17 61
20 SD_DO
System
Controller
DVSS 62
I2C I/F
Controller
TMODE 63
19 SD_CON
18 DVDDIO
DVDDIO 64
11
12
13
14
15
KEY_COL2/A1
KEY_COL3/
SEL_SMAN
10
KEY_COL1/A0
9
KEY_ROW4/SDA
8
KEY_ROW3/SCL
SEL_DOUT
7
KEY_ROW1/
MCHNG
KEY_ROW2/
BUSY
SEL_MP3
6
TEST2
SEL_SLAVE
5
TEST1
4
SEL_UTPKT
3
SEL_APLAY
2
SEL_VOL
1
RESETX
17 TEST3
Figure II.1
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TEST5/
CLKOUT12
Terminal layout drawing
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BU94601KV Functional Specifications
II.2
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Terminal specifications
Table II.2 Terminal specifications
STAND ALONE MODE(MODE1)
I/O I/O Pull-Up/
Cir
Down
SLAVE MODE(MODE2,MODE3)
Pin
No.
Signal Name
1
RESETX
A
I
-
2
SEL_SLAVE
B
I
PU(*1)
3
SEL_MP3
B
I
PU(*1)
4
SEL_DOUT
B
I
PU(*1)
5
SEL_VOL
B
I
PU(*1)
6
SEL_APLAY
B
I
PU(*1)
7
SEL_UTPKT
B
I
PU(*1)
8
TEST1
-
Ｉ
-
9
TEST2
-
Ｉ
-
10
KEY_ROW1
B
I
PU
H: Release RESET,
L: RESET
H: STAND ALONE, L:SLAVE
H: PLAY MP3 ONLY,
L: PLAY MP1,MP2 and MP3
H: ANALOG DAC Output,
L: Digital Output
H: Volume control valid,
L: Volume control invalid
H: Auto Play OFF ,
L: Auto Play
H: Normal Operation
L: USB Test Packet Output
Pull-up to 3.3V system power
supply (for TEST)
Pull-up to 3.3V system power
supply (for TEST)
KEY Input ROW1
11
KEY_ROW2
B
I
PU
KEY Input ROW2
BUSY
12
KEY_ROW3
B
I
PU
KEY Input ROW3
SCL
13
KEY_ROW4
B
I
PU
KEY Input ROW4
SDA
14
KEY_COL1
B O
-
KEY Input COLUMN1
A0
15
KEY_COL2
B O
-
KEY Input COLUMN2
A1
16
KEY_COL3
B O
-
KEY Input COLUMN3
Pull-up to 3.3V system
supply (for TEST)
Connect to 3.3V
System Power Supply
SD I/F
SD I/F
SD I/F
SD I/F
SD I/F
Connect to GND
Pull-up to 3.3V system
supply (for TEST)
Pull-up to 3.3V system
supply (for TEST)
Connect to 57PIN
Pull-up to 3.3V system
supply (for TEST)
Pull-up to 3.3V system
supply (for TEST)
Pull-up to 3.3V system
supply (for TEST)
OPEN (for TEST)
Connect to 3.3V
System Power Supply
USB DATAUSB DATA+
Connect to GND
Connect Bias Resistor
to GND
OPEN (for TEST)
Connect to 3.3V
System Power Supply
17
TEST3
B
Ｉ
-
18
DVDDIO
-
-
-
19
20
21
22
23
24
SD_CON
SD_DO
SD_CLK
SD_DI
SD_CS
DVSS
B I
B I
B O
B O
B O
- -
PU
-
25
TEST4
-
PU
26
TEST5/
CLKOUT12M
DVDD_M2
27
28
29
TEST6
TEST7
Ｉ
-
I
PU
-
-
-
-
I
I
-
30
TEST8
-
I
-
31
ATEST1
-
O
-
32
AVDDC
-
-
-
33
34
35
USB_DM
USB_DP
AVSSC
C I/O
C I/O
- -
-
36
REXTI
D O
-
37
VOREFI
-
O
-
38
VDD_PLL
-
-
-
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Signal Name I/O Pull-Up/
Down
Function
Function
←
←
←
←
←
←
←
←
←
MCHNG
SEL_SMAN
O
-
Music change Output
Command
O
Operation Busy Flag
I
I2C I/F Clock Input
I2C
I/F Data
I/O
Input/Output
I/F Slave
I PU(*1) I2C
Address Set0
I/F Slave
I PU(*1) I2C
Address Set1
I PU(*1) H: MODE2, L: MODE3
power
←
←
←
←
←
←
←
←
power
power CLKOUT12(*2) O
←
-
12MHz CLK Output.
←
power
←
power
←
power
←
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←
←
←
←
←
←
←
BU94601KV Functional Specifications
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39
40
41
TEST_PLL
XIN_PLL
XOUT_PLL
- I
E I
E O
-
OPEN (for TEST)
X'tal Input 16.9344MHz
Connect to X'tal 16.9344MHz
←
←
←
42
43
44
VSS_PLL
DAVSS
RDACO
- - F O
-
←
←
←
45
VCDACO
F O
-
46
LDACO
F O
-
47
DAVDD
-
-
-
48
AMUTE
G O
-
Connect to GND
Connect to GND
Audio DAC Line Output Rch
Audio DAC
Reference Voltage Output
Audio DAC Line Output Lch
Connect to 3.3V
System Power Supply
Audio Mute Output
(H:Mute Cancel, L:Mute)
49
LED_ERROR
B O
-
Error LED Output
TEST9
I
-
50
LED_PLAY
B O
-
Play LED Output
TEST10
I
-
51
LED_PSD
B O
-
Play SD Card LED Output
TEST11
I
-
52
LED_PUSB
B O
-
Play USB LED Output
TEST12
I
-
53(*3) LED_ACCESS B O
-
Memory Access LED Output
LRCK(*4)
O
-
54(*3) LED_RANDOM B O
55(*3) LED_REPEAT B O
-
Random Play LED Output
Repeat Play LED Output
Pull-up to 3.3V system power
supply (for TEST)
Connect to
Bypass Condenser
Connect to GND
Pull-up to 3.3V system power
supply (for TEST)
Pull-up to 3.3V system power
supply (for TEST)
Pull-up to 3.3V system power
supply (for TEST)
Connect to GND
Connect to GND
Connect to 3.3V
System Power Supply
BCK
DATA
O
O
-
56
TEST13
-
I
-
57
DVDD_M1
-
-
-
58
TEST14
F
I
-
59
TEST15
-
I
-
60
TEST16
-
I
-
61
TEST17
-
I
-
62
63
DVSS
TMODE
H
I
-
64
DVDDIO
-
-
-
←
←
←
←
Pull-up to 3.3V system
power supply
Pull-up to 3.3V system
power supply
Pull-up to 3.3V system
power supply
Pull-up to 3.3V system
power supply
I2S Output
LR Clock /
SPDIF Output
I2S Output Bit Clock
I2S Output LR DATA
←
←
←
←
←
←
←
←
←
*1 When L is input, Pull-UP turns OFF.
*2 Enabled/Disabled can be selected using commands.
*3 In STAND ALONE MODE (MODE1),
When ANALOG DAC output is selected (SEL_DOUT=H), LED output is enabled.
When the Digital output is selected (SEL_DOUT=L), the I2S format audio output is enabled.
In SLAVE MODE (MODE2, MODE3),
When the ANALOG DAC output is selected (SEL_DOUT=H), these pins are TEST terminals.
When the Digital output is selected (SEL_DOUT=L), you can select I2S format audio output or digital
audio interface output (SPDIF).
See Chapter Ⅴ.4 for further information.
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BU94601KV Functional Specifications
II.3
Terminal equivalent circuit diagram
A
B
DVDDIO
DVDDIO
DVDDIO
DVDDIO
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C
D
D
P
AVDDC
AVDDC
D
M
15KΩ
AVSSC
15KΩ
AVSSC
DVSSIO
E
VDD_PLL
XIN
AVSSC
DVSSIO
F
VDD_PLL
DAVDD
G
DVDDIO
H
DVDDIO
XOUT
VSS_PLL
VSS_PLL
DAVSS
DVSSIO
DVSSIO
Figure II.3
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I/O terminal equivalent circuit diagram
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III.
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Absolute Maximum Rating and Operating Conditions
III.1
Absolute maximum rating
(Ta=25°C)
Item
Power voltage (analog, IO)
Terminal voltage
Storage temperature range
Operating temperature range
Power dissipation *1
*1
Symbol
V DD1MAX
V IN
T stg
T opr
PD
Rating
4.5
− 0.3 ~ V DD1 +0.3
− 55 ~ +125
− 40 ~ 85
750
Unit
V
V
°C
°C
mW
When using the product at Ta=25°C or higher temperature, 7.5 mW per 1°C should be subtracted.
III.2 Operating Conditions
Item
Symbol
Rating
Unit
Applicable terminal
Power voltage (analog, IO)
V DD1
3.0 ~ 3.6
V
DVDDIO,VDD_PLL
DAVDD,AVDDC
* Not designed to be radiation-proof.
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IV.
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Electrical Specifications
(Ta=25°C, VDD1=3.3V, VDD2=1.5V, XIN_PLL=16.9344MHz unless otherwise specified.)
Item
General
Operating power consumption
(VDD1USB)
Operating power consumption
(VDD1SD)
Logic
H input voltage
L input voltage
H output voltage 1
L output voltage 1
H output voltage 2
L output voltage 2
H output voltage 3
L output voltage 3
H output voltage 4
L output voltage 4
USB interface
H input voltage
L input voltage
Output impedance (H)
Output impedance (L)
H output voltage
L output voltage
Rise/Fall time
Cross point voltage
Differential input range
Differential input sensitivity
Pull-down resistance
Symbol
Speciation
Condition
Applicable terminal
Unit
MIN.
TYP.
MAX.
IDD1USB
-
70
81
mA
IDD1SD
-
45
60
mA
VIH
VIL
VOH1
VOL1
VOH2
VOL2
VOH3
VOL3
VOH4
VOL4
VDD1*0.7
DVSS
VDD1-0.4
0
VDD1-0.4
0
VDD1-0.4
0
VDD1-1.0
0
-
VDD1
VDD1*0.3
VDD1
0.4
VDD1
0.4
VDD1
0.4
VDD1
1.0
V
V
V
V
V
V
V
V
V
V
VIHUSB
VILUSB
ＺOH
ＺOL
VOHUSB
VOLUSB
Tr/Tf
VCRS
Vdiff
Vsens
RPD
VDD1*0.6
AVSSC
22.0
22.0
VDD1-0.5
0
0.8
0.2
10.0
45.0
45.0
11
VDD1/2
15.0
VDD1
VDD1*0.3
60.0
60.0
VDD1
0.3
2.5
20.0
V
V
Ω
Ω
V
V
nS
V
V
V
kΩ
*1,
*1,
When playing USB
memory
When playing SD
memory card
*3
*3
IOH=-1.6mA, *4
IOL=1.6mA, *4
IOH=-3.6mA, *5
IOL=3.6mA, *5
IOH=-0.6mA, *6
IOL=0.6mA, *6
IOH=-0.6mA, *7
IOL=0.6mA, *7
*8
*8
*8
*8
*8
*8
*8, Output capacity 50pF
*8, Output capacity 50pF
*8
*8
*8
Audio DAC
Distortion
THD
0.03
%
1kHz, 0dB, sine, *9
D range
DR
88
dB
1kHz, -60dB, sine, *9
S/N ratio
S/N
93
dB
*9
Maximum output level
Vsmax
0.67
Vrms 1kHz, 0dB, sine, *9
*1 3.3V system I/O, analog power supply (DVDDIO, VDD_PLL, DAVDD, AVDDC), When playing 1kHz, 0dB, sinewave.
*3 1-17, 19-20, 25-26, 40, 49-52, 56,58-61, 63 pin
*4 10-11, 14-16, 48-55 pin
*5 13 pin
*6 21-23, 26 pin
*7 41 pin
*8 33, 34 pin
*9 44, 46 pin
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I/O Signal Specifications
V.1
Clock and reset
Clock
Signal name I/O
XIN_PLL
XOUT_PLL
Function
(16.9344 MHz) connection
I X’tal
input terminal
(16.9344 MHz) connection
O X’tal
terminal
Remarks
Reset
Signal name I/O
RESETX
I
Function
Remarks
System reset input terminal
To disable a reset signal, continue L input for more than 5 us after clock input from the oscillation I/O terminal
becomes stable. (See Figure V.1.)
Oscillation stabilization
standby time
fclk
Power
supply
XIN_PLL
RESETX
tRSTX
Figure V.1
min
Specification
typ
max
fCLK
16.8921
16.9344
16.9767
MHz
tRSTX
5
-
-
us
Item
Symbol
Clock frequency
Reset L interval
V.2
Reset Timing
Unit
Remarks
SEL_SLAVE
MODE1/MODE2, 3 selection input signal
Signal name I/O
SEL_SLAVE
I
Function
Remarks
Selects MODE1 or MODE2, 3.
H: MODE1, L: MODE2, 3
SEL_SLAVE selects MODE1 (STAND ALONE MODE) or MODE 2/3 (SLAVE MODE).
By selecting SEL_SLAVE, SLAVE mode terminal setting shown in Table II.2 is enabled.
SEL_SLAVE is set only at power ON. Note that change of selection after power ON is ignored.
V.3
SEL_MP3
MPEG Audio Layer 1, 2, 3 play selection signal
Signal name I/O
SEL_MP3
I
Function
MPEG Audio Layer selection
H: Can play MP3 only.
MP3.
Remarks
L: Can play MP1, MP2 and
SEL_MP3 allows you to select the layer of the MPEG audio to be played. When enabling all the files
having mp1, mp2 or mp3 as the file extension to be played, enter L. When enabling mp3 only, enter H.
SEL_MP3 is set only at power ON. Note that change of election after power ON is ignored.
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SEL_DOUT
Audio output selection signal
Signal name I/O
SEL_DOUT
I
Function
Remarks
Audio output selection
H: Line output, L: I2S 3 lines serial output/SPDIF
This SEL_DOUT selects audio output signal.
Table V4.1 “Audio output” shows the audio outputs for each MODE.
Also table V4.2 ”I2S_fs” shows the I2S output formats for each MODE.
For command, see Chapter VI.
"TEST terminal" describes that this terminal is pulled-up in device.
TableV.4.1 Audio output
MODE1
Pin No.
SEL_DOUT=H
44
46
53
Line Out Rch
Line Out Lch
LED_ACCESS
54
LED_RANDOM
55
LED_REPEAT
MODE2,3
SEL_DOUT=L
SEL_DOUT=L SEL_DOUT=H
SPDIF OFF SPDIF ON
HiZ
Line Out Rch
HiZ
HiZ
HiZ
Line Out Lch
HiZ
HiZ
I2S LR CLOCK TEST terminal I2S LR CLOCK
SPDIF
TEST
I2S BIT CLOCK TEST terminal I2S BIT CLOCK
terminal
TEST
I2S LRDATA
TEST terminal
I2S LRDATA
terminal
Table V.4.2 I2S_fs
MODE1
MODE2/3
32fs
Can select 32fs, 48fs, 64fs by command.
SEL_DOUT is set only at power ON. Note that change of selection after power ON is ignored.
V.5
SEL_VOL
Sound volume operation selection signal
Signal name I/O
SEL_VOL
I
Function
Remarks
H: Sound volume operation enabled, L: Sound volume
operation disabled
Sound volume operation
SEL_VOL selects whether sound volume operation is to be enabled or disabled.
Sound volume operation is enabled when SEL_VOL=H.
Initial value of audio output is -24.1dB at power ON.
Sound volume operation is disabled when SEL_VOL=L. Audio output is fixed to 0dB.
Figure V.5 shows the relationship between audio output and sound volume step.
SEL_VOL is set only at power ON. Note that change of selection after power ON is ignored.
0
-10
Audio output (dB)
-20
-30
-40
↓ -∞
Initial value: -24.1 dB
(when SEL_VOL=H)
-50
-60
0
2
4
6
8
10
12
14
16
18
20
22
24
Volume step
Figure V.5 Volume Step Function
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28
30
32
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SEL_APLAY
Auto play selection signal at power ON/device recognition
Signal name I/O
SEL_APLAY
I
Function
Auto play selection signal at
device recognition
Remarks
H: Stop after recognizing device, H: Play after
recognizing device
SEL_APLAY selects whether the audio data in the memory is to be automatically played when a memory
device (USB memory or SD card) is inserted at power ON or when the system recognizes the memory
device inserted.
SEL_APLAY can be selected only in MODE1. Since selection of SEL_APLAY is ignored in MODE2/3,
select it from Pull-up. When MODE2/3 is selected, audio data is halted after the system recognizes a
device.
V.7
SEL_UTPKT
USB test packet
Signal name I/O
SEL_UTPKT
I
Function
Remarks
USB test packet send
H: Disabled, L: USB test packet send
A test packet signal is output from USB_DP terminal or USB_DM terminal when L is set to SEL_UTPKT at
power ON.
Once enabled, SEL_UTPK keeps that state regardless of operation modes and sends out a test packet.
A test packet signal is continuously output until power turns OFF. Use SEL_UTPKT when evaluating the
USB terminal. In other cases, use it from Pull-up.
V.8
Audio output
Audio output
Signal name I/O
Function
Remarks
LDACO
O Lch audio line output
-
RDACO
O Rch audio line output
-
These signals are decoded MP3 music audio data line outputs.
They turn ON when the line output is selected by SEL_DOUT terminal.
V.9
MUTE control output
Audio MUTE
Signal name I/O
AMUTE
Function
Remarks
O Audio mute control terminal
H: At audio output, L: At mute
This is a control terminal to mute audio output at power ON or FF/FB (silence).
This terminal outputs H at audio output and L at mute.
Figure Ⅴ.9 shows the operation waveform.
Figure V.9 Waveform at Audio Mute
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KEY input format
3x4 matrix command input
Signal name I/O
Function
Remarks
KEY_ROW1
I
-
KEY_ROW2
I
-
KEY_ROW3
I
KEY_ROW4
I
KEY_COL1
O
-
KEY_COL2
O
-
KEY_COL3
O
-
KEY matrix I/O signal
-
Configure a circuit for the matrix signals terminals for KEY commands as shown in the applied circuit
diagram V.10.
The operation corresponding to the key pressed over the circuit is performed.
Details of each operation are explained in Chapter VI.2.
+10
REPEAT
VOL-
VOL+
FB
PLAY/
PAUSE
KEY_
ROW1
KEY_
ROW2
RANDOM
CHG_DEV
FOL-
FOL+
FF
STOP
KEY_
ROW3
KEY_
ROW4
KEY_
COL1
KEY_
COL2
KEY_
COL3
Figure V.10 KEY Matrix Applied Circuit Diagram
V.11
I2C interface format
I2C serial interface
Signal name I/O
SCL
SDA
I
Function
Remarks
I2C interface clock input
I/O I2C interface data I/O
-
A0
I
Slave address selection terminal
Slave address [0] bit setting terminal
A1
I
Slave address selection terminal
Slave address [1] bit setting terminal
This is an I2C serial interface terminal. By inputting L to SEL_SLAVE terminal, the interface terminal
becomes enabled.
The terminal supports slave I2C operation.
V.11.1 I2C protocol
When I2C bus is in IDLE, SDA and SCL are set to H by the external Pull-up resistance. When starting
communications, the master sets SDA to L while SCL is set to H (Start condition). When ending
communications, the master sets SDA to H while SCL is set to H (Stop condition). Even before sending
Stop condition at the end of communications, transfer of Start condition allows restart of communications
(Repeated Start Condition). During transfer, SDA is changed only when SCL is set to L. Figure V.11.1
shows Start condition, Stop condition, Repeated Start condition of I2C.
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SCL
1
SDA
2
MSB
8
9
LSB
ACK
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1
9
ACK
Start or
Repeated start
condition
Stop or
Repeated start
condition
Figure V.11.1
I2C start, stop, repeated start condition
V.11.2 Slave address
An I2C bus slave address corresponds to the 7-bit addressing mode. As shown in Table V.11.2, you can
select the slave address using input of A0 terminal and A1 terminal. Figure V.11.2 shows the slave
address transfer format.
S
A6
A5
A4
Start
condition
A3
A2
A1
A0
R/W
ACK
sent by
slave
Slave Address
R / W = Read / Write Pulse
ACK = Acknowledge
Figure V.11.2
Slave Address Transfer Format
Table V.11.2
Settable Slave Addresses
MSB
A6
A5
A4
A3
A2
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LSB
A1
A0
terminal terminal
0
0
0
1
1
0
1
1
V.11.3 Write protocol from master
To send a master command using an I2C bus, follow the transfer protocol shown in Figure V.11.3. For
details on each command, see Chapter VI.
S
Slave Address
R/W
A
Data(8bit)
A
Data(8bit)
A
Data(8bit)
A/A
P
"0"(write)
From Master to Slave
From Slave to Master
A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
S = Start Condition
P = Stop condition
Figure V.11.3
Command send protocol
V.11.4 Read protocol to master
To send reception data using an I2C bus from the slave to the master, follow the transfer protocol shown
in Figure V.11.4.1. First, transfer the status read command (step1). Then, input SCL clock of required
bytes in step 2 to read the status.
When the device is BUSY at reception of device status or memory data, the I2C bus may possibly be
occupied by the device during BUSY. This LSI transfers the bus to the master so as not to generate such
bus occupation. However, as a BUSY state still exists inside of the system, appropriate data may not be
transferred during BUSY. Therefore, the first byte of transfer data (Step2) is used to judge the transfer
data is enabled/disabled. When specifying addresses from the master to the slave and the first byte of
the transfer data immediately after data transfer is required is 0x00, transfer data from the slave is
enabled. If the first byte is 0xFF, it shows the BUSY state. Therefore, the transfer data should be
disabled. If this happens, retry command transfer at Step 1 to read out the status.
Figure V.11.4.2 shows the relationship between the transfer data and BUSY.
* For further information on BUSY, see Chapter V.17.
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Step1
S
Slave Address
R/W
A
Data(8bit)
A
A
Data(8bit)
A
Data(8bit)
A/A
P
"0"(write)
Step2
S
Slave Address
R/W
Data(8bit)
A
Data(8bit)
A/A
P
"1"(read)
From Master to Slave
A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
From Slave to Master
S = Start Condition
P = Stop condition
Figure V.11.4.1 Status Reception Protocol
I2C
Step1 command
S
Slave Address
R
A
0xFF
BUSY
A
Data(8bit)
A
Data(8bit)
A/A
P
Dummy byte for Busy
Step1 command
S
Slave Address
R
A
0x00
A
Data(8bit)
A
Data(8bit)
A/A
P
Dummy byte for Busy
Figure V.11.4.2 Relationship between Transfer Data and BUSY
V.12
I2S format
I2S serial audio interface
Signal name I/O
LRCK
Function
Remarks
O I2S Bit clock output (fs=44.1kHz) -
BCK
O I2S Bit clock output
-
DATA
O I2S data output
-
This is a serial audio interface terminal. By inputting L to SEL_DOUT terminal, the interface terminal
becomes enabled. When selecting the I2S serial audio output, the output format varies depending on
MODE. *See Chapter Ⅴ.4. MODE2 allows you to select 32fs, 48fs or 64fs. *See Chapter V.4.
Figures V.12.1. V12.2 and V.12.3 show the I2S format to be output.
LRCK
Right Channel
Left Channel
BCK(32fs)
DATA
1
0
15
14
13
12
11
10
Figure V.12.1
Figure V.12.2
LRCK
9
8
7
6
5
4
3
2
1
0
15
I2S Output Timing (32fs)
I2S Output Timing (48fs)
Left Channel
Right Channel
BCK(48fs)
DATA
15 14 13 12 11 10
9
8
7
6
Figure V.12.3
LRCK
5
4
3
2
1
0
15 14
I2S Output Timing (64fs)
Left Channel
Right Channel
BCK(64fs)
DATA
Confidential
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Target Spec 0.11
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V.13
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SPDIF format
Digital audio interface
Signal name I/O
SPDIF
Function
Remarks
O Digital audio output
-
SPDIF output becomes enabled by setting SEL_DOUT terminal to L and setting this condition using the
I2C command. *See Chapter V.4.
Figure V.13 shows the digital audio signal output format.
0
34
11 12
Synchronous
preamble
Source code
all 0
27 28 29 30 31
Audio data(16bit)
LSB
MSB V
U
C
P
(B pattern)
Synchronous
preamble
(M pattern)
(W pattern)
Source code(4-31)
0
0
0
0
0
0
0
0
1
0
1
1
0
1
Synchronous
preamble
SPDIF output
Figure V.13
SPDIF Output Format
A sub-frame of SPDIF is composed of synchronous preamble, 16-bit audio data, V bit (validity flag), U bit
(user data), C bit (channel status) and P bit (parity bit).
Output rate is fixed to 1X speed.
SPDIF outputs synchronous preamble (source code 0-3) as it is and others (source code 4-31) as
bi-phase output. It outputs L while the operation is stopped.
Synchronous preamble and C bit use 32 frames (≈4.4ms) as one cycle. Table V.13.1 and Table V.13.2
show these formats. V bit is fixed to L. U bit uses 98 frames (≈13.3ms) as one cycle.
Table V.13.1
Synchronous Preamble Pattern
L0
R0
L1
R1
L2
R2
L3
R3
L4
R4
L5
R5
0
B
W
M
W
M
W
M
W
M
W
M
W
1
M
W
M
W
M
W
M
W
M
W
M
W
:
:
:
:
:
:
:
:
:
:
:
:
:
31
M
W
M
W
M
W
M
W
M
W
M
W
R4
L5
Table V.13.2
L0
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R0
L1
R1
L2
C Bit Format
R2
L3
R3
L4
R5
0
0
0
0
0
0
0
1
0
0
1
0
0
0
2
0
0
0
0
0
0
3
0
0
0
0
4
0
0
0
0
0
0
5
0
0
0
0
0
0
:
:
:
:
:
:
:
31
0
0
0
0
0
0
1
0
0
Target Spec 0.11
1
BU94601KV Functional Specifications
Table V.13.3
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U Bit Format
L0
R0
L1
R1
L2
R2
L3
R3
L4
R4
L5
R5
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
0
3
1
0
0
0
0
0
0
0
0
0
0
0
:
:
:
:
:
:
:
:
:
:
:
:
:
97
1
0
0
0
0
0
0
0
0
0
0
0
P bit is set to 1 if the number of “1s” of source codes 4-30 is odd, and set to 0 if the number is even.
Therefore, the number of source codes which turn to 1 for one data must be an odd value, SPDIF ends
with L output and preamble output always starts in the same direction.
V.14
USB I/F
USB I/O I/F
Signal name I/O
Function
Remarks
USB_DP
I/O USB D+I/O terminal
-
USB_DM
I/O USB D-I/O terminal
bias resistance connection
O USB
terminal
-
REXTI
Connect resistance of 12kΩ ± 1% to GND.
Differential signals of USB_DP and USB_DM enable communications with USB devices.
REXTI terminals become bias resistance connection terminals of the USB-PHY block.
V.15
SD I/F
SPI interface for SD memory card I/F
Signal name I/O
SD_CS
SD_CLK
Function
Remarks
O SPI chip select
-
O SPI clock
-
SD_DI
O SPI data input
-
SD_DO
I
SD_CON
I
H: Not detecting SD card connection.
L: Detecting SD card connection.
SPI data output
SD card connect detection
terminal
These I/F enable communication with SD memory cards through SD memory card slots.
Since SD memory card slot requires detecting insertion of SD memory card, use of slot equipped with SD
memory card detecting terminal and connection to SD_CON terminal are required.
SD_CON terminal is pulled up within the device and detects SD memory card connection by L input.
V.16
MCHNG
Playing sound tune number detection output
Signal name I/O
MCHNG
Function
tune number change
O Music
detection output signal
Remarks
H: Playing, L: Tune completed/stopped
This signal outputs change of file to be played during playing MP3 file in the memory device.
MCHNG correctly outputs "H" during MP3 decode sequence, outputs "L" during "STOP" status.
V.17
BUSY
BUSY state detection output
Signal name I/O
BUSY
Function
BUSY
state
detection
output
O signal
Remarks
H: Busy, L: Not Busy
This signal outputs to indicate that this LSI is in BUSY.
BUSY signal analyzes commands from the master and outputs H until the operation is executed.
This LSI ignores command input during BUSY. However, only the ABORT and STOP commands can be
accepted even during BUSY, which can be executed. *See Chapter V.11.
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Function/Operation Explanation
VI.1
File detection
VI.1.1 Function
· This function supports FAT16 and FAT32 file systems. (It does not support NTFS and FAT12.)
· The maximum number of playable files per folder
Table VI.1.1 Maximum Number of Playable Files
FAT16
FAT32
Root folder
Sub folder
512
65536
65534
65534
The number of files described above contains files other than MP3 and folders. If those non-MP3 files
and folders exit within the folder and exceed the maximum number, all the MP3 files may not be played.
· Files less than 100 can be sorted by UNICODE in the FAT order within the folder. Files over 100 are
sorted in the FAT order. Also, the folders can be sorted in the same manner and those over 100 are
sorted in the FAT order.
· The searchable folder hierarchy is of 8 layers containing the root folder. Figure VI.1.1 shows an
example of memory layers.
USB
Memory
Playable layers
Folder
Folder
Folder
File
File
Folder
Folder
File
Folder
Folder
File
Folder
File
File
Folder
Folder
Folder
File
Folder
Folder
Folder
File
File
File
Folder
File
File
File
Folder
File
File
File
File
File
File
Unplayable layers
File
Figure VI.1.1
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Example of Memory Layers
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VI.1.2 Playable file
The playable file extensions are *.MP3, *.MP2 and *.MP1 files. (Upper case letters and lower case
letters are not distinguished.) Note that the file operation differs in the following cases:
(1) SEL_MP3: See SEL_MP3 for details.
(2) Attribute: A MP3 file whose attribute is masked can be played. A file with system attributes cannot
be played.
(3) Data destroyed file: When the data section of MP3 file is destroyed, the music data of the file can be
played as much as possible rather than disabling to play the entire file. The section which cannot
be played is muted. However, AMUTE terminal remains the H output level.
(4) File name: A file name and its size do not depend on playing.
(5) Extension: When file data is configured in the non-MP3 format and its file extension is *.MP3, *.MP2
or *.MP1, the state is silent playing basically. If playable data can be read, only a part of the file can
be played. The information on time required to output serial status also becomes uncertain. Then,
partial output is done but the correct time information is not output.
(6) File size: When file size is “0”, the file do not recognize at MP3 files.
VI.1.3 Playing sequence
The playing sequence of MP3 files is determined based on the following rules. See Figure VI.1.3.
(1) Folders are sorted in the order written in FAT (in the order of FAT), and files 1 to 100 are sorted in the
order of UNICODE. (*See Chapter VI. 1.4.) Files over 100 are sorted in the order of FAT.
Folders over 100 are sorted in the same manner.
MP3 files are sorted by MP3 following SEL_MP3. Folders are sorted including null folders and
those in which MP3 files are not written. Within each folder, MP3 files over 100 and folders over
100 are played in the order written to the FAT directory entry.
Since how to write to the directory entry depends on the OS (Operating System) processing to write
to the memory, you cannot understand the file playing sequence.
(2) When MP3 file exists in the root folder (the highest layer), the MP3 file is played first.
(3) When all the MP3 files in the root folder have been played, those in the folder under the root folder, if
any, are played.
(4) When a folder is layered under that, MP3 files in the folder are played. When not, the master
searches any other folders at the same layer and plays the one, if any.
(5) After playing all the files, the master returns to the root folder as described in (2) and start playing
with the first sorted file.
VI.1.4 Folder/file sort
Folders and files are sorted in the following sequence using this LSI.
(1) Obtain up to 100 files and 100 folders in the order written to FAT.
(2) Compare the obtained folder/file names up to 14 characters (including filename extensions) and sort
them in the ascending order.*
(3) When the same strings are generated, follow the order written to FAT.
(4) For 101 or more folders and files, follow the order written to FAT.
*
Confidential
The processing of the file name and the folder name is shown in the following.
1)When the LFN(long file name) entry exists, folder/filename is processed as one character in two
bytes.
2)When the LFN entry doesn't exist, the SFN(short file name) entry is processed as follows.
2-a) When character-code that appears first is ≧0x80 ,It’s treated as the first byte of two byte
character. Byte data afterwards is treated as the second byte of two byte character-code, and
treated by two bytes as one character.
2-b) When the case that doesn't apply to 2-a) ,that is, the character-code appears first is installed
within the range of 0x00-0x7F(US-ASCII) One byte is treated as one character. '0x00' is
added and enhanced to Unicode.
Please confirm the specification of the FAT filesystem about details of LFN and SFN.
Target Spec 0.11
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[Root Folder]
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A.mp3
B.mp3
C.mp3
A_FOLDER
D_FOLDER
Figure VI.1.3
D.mp3
E.mp3
F.mp3
G.mp3
H.mp3
B_FODER
I.mp3
J.mp3
C_FOLDER
K.mp3
L.mp3
M.mp3
N.mp3
O.doc
P.xls
Q.mp3
E_FOLDER
U.mp3
V.mp3
W.mp3
X.mp3
Y.mp3
Z.mp3
R.txt
S.txt
T.txt
Configurations of Folders and Files within Memory Device
Table VI.1.3 MP3 File Playing Sequence for Folder/File Configuration as in Figure VI.1.3
Confidential
Playing
sequence
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
File to be
played
A.mp3
B.mp3
C.mp3
D.mp3
E.mp3
F.mp3
G.mp3
H.mp3
I.mp3
J.mp3
K.mp3
L.mp3
M.mp3
N.mp3
Q.mp3
U.mp3
V.mp3
W.mp3
X.mp3
Y.mp3
21
Z.mp3
Remarks
· If MP3 files exist in the root folder,
those files are played first.
· Files are played in the ascending order
of UNICODE by file name.
· After all MP3 files in the root folder are
played, the master searches folders
under that layer.
· The master searches folders in the
ascending order of UNICODE by folder
name.
· Non-MP3 files are ignored.
· After the master plays all MP3 files
including those in the lower layers
within A_FOLDER, it moves to a folder
in the same layer as A_FOLDER to
search MP3 files.
· Since there is no MP3 file in
D_FOLDER, the layers same as
A_FOLDER, the master plays MP3 files
in E_FOLDER under that.
Target Spec 0.11
BU94601KV Functional Specifications
VI.2
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MODE1
VI.2.1 KEY command operation
VI.2.1.1 KEY SCAN (Single Mode)
KEY SCAN operates in the following sequence on the circuit configuration as shown in Figure V.10 .
(1) KEY_COL1 to 3 output waveforms at timing as shown in Figure VI.2.1.
(2) By pressing KEY switch, KEY_ROW 1 to 4 are set to L at timing when KEY_COL 1 to 3 are L.
(3) When detecting L input from KEY_ROW 1 to 4 three times, the master judges that KEY has
been pressed. Then, the master starts the KEY operation.
.
420ns
420ns
420ns
20ms
KEY_COL1
KEY_COL2
KEY_COL3
Figure VI.2.1
20ms
20ms
KEY SCAN Waveform
20ms
20ms
20ms
20ms
PLAY
KEY_ROW1
KEY_ROW2
KEY_ROW3
KEY_ROW4
KEY_COL1
Determine that KEY is pressed
Start the operation of the pressed KEY.
Figure VI.2.2
Operating Waveforms when KEY is Pressed
VI.2.1.2 KEY SCAN (Hold Mode)
KEY SCAN operates in the following sequence on the circuit configuration as shown in Figure V.10 .
(1) KEY_COL1 to 3 output waveforms at timing as shown in Figure VI.2.1.
(2) By pressing KEY switch, KEY_ROW 1 to 4 are set to L at timing when KEY_COL 1 to 3 are L.
(3) When detecting L input from KEY_ROW 1 to 4 three times, the master judges that KEY has been
pressed. Then, the master starts judging status of held KEY.
(4) When pressed KEY’s decision (L input from KEY_ROW 1 to 4 three times) is detected
consecutive 15 times, the master judges that KEY Mode is Hold Mode.
(5) When KEY release is detected in judging status of hold KEY, the master judges that KEY Mode is
Single Mode. Then, the master starts the KEY operation.
(6) When Hold Mode is detected, the master starts the KEY operation in Hold Mode. When KEY
release is detected in Hold Mode, the master finish the KEY operation.
The keys corresponding to Hold Mode are FF, FB, VOL+, and VOL-.
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Target Spec 0.11
BU94601KV Functional Specifications
Figure VI.2.3
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KEY SCAN Waveform.
Note 1: Based on the above sequence, the master determines that KEY is pressed and starts the operation of the
pressed KEY, pressing multiple KEYs at the same time will produce different operations depending on the KEY
combinations. Therefore, you cannot regulate the operation sequence correctly even simultaneously pressing
multiple KEYs will not cause any problems. In Hold Mode, Other pressed KEY is disregarded.
Note 2: Because the KEY input does not have a buffering function, KEY inputs other than those described below
are ignored.
Confidential
Target Spec 0.11
BU94601KV Functional Specifications
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VI.2.1.3 KEY operation
Table VI.2.1.2.1 shows the types and operations of KEYs.
Table VI.2.1.2.2 shows enabled/disabled states of KEY operations.
Table VI.2.1.2.1 KEY Commands and Operation Description
KEY COMMAND
PLAY/PAUSE
STOP
FF
FB
FOL+
FOL-
+10
VOL+/VOL-
Confidential
OPERATION DESCRIPTION
· When receiving “PLAY/PAUSE” key during stop, the master starts playing the first MP3 file
sorted to the recognized device.
· When receiving “PLAY/PAUSE” key during play, the master stops playing the MP3 file
temporarily. When receiving PLAY/PAUSE key again, the master restarts playing the file.
· When receiving “STOP” key during play, pause or file search, the master stops playing,
pausing or searching the MP3 file.
· When receiving “FF” KEY (Single Mode) during play or pause, the master searches the next
MP3 file in the order of sort of files being played or paused. Upon completion of searching,
the master starts playing the file.
· During play of the last file, the master returns to the first file in the order of sort and plays the
file.
· When receiving “FF” KEY (Hold Mode) during play or pause, the master starts fast forward
playing the file. When "FF" KEY release is detected, the master return to normal playing.
· When music finishes into "FF" KEY (Hold Mode), the master starts fast forward playing from
top of the next file. However, when selecting “REPEAT” or “RANDOM”, master search next file
by setup.
· When receiving “FB” KEY (Single Mode) during play or pause, the master searches the
previous MP3 file in the order of sort of files being played or paused. Upon completion of
searching, the master starts playing the file.
· During play of the first file, the master plays the last file in the order of sort.
· When receiving "FB" KEY within 1sec from top of file playing, the master searches the
previous MP3 file in the order of sort of files being played. Upon completion of searching, the
master starts playing the file. When receiving "FB" KEY over 1sec from top of file playing, the
master starts playing from top of this MP3 file.
· When receiving “FB” KEY (Hold Mode) during play or pause, the master starts fast backward
playing the file. When "FB" KEY release is detected, the master return to normal playing.
· When music finishes into "FB" KEY (Hold Mode), the master starts fast backward playing from
end of the previous file. However, when selecting “REPEAT” or “RANDOM”, master search
previous file by setup.
· When receiving “FOL+” KEY during play or pause, the master searches the MP3 files in the
next folder in the order of sort of the folder in which the file being played or paused exists.
Upon completion of search, the master plays the file.
· During play of the file in the last folder in the order of sort, the master plays the first file in the
order of sort.
· When receiving “FOL-“ KEY during play or pause, the master searches the MP3 files in the
next folder in the order of sort of the folder in which the file being played or paused exists.
Upon completion of search, the master plays the file.
· During play of the file in the first folder in the order of sort, the master plays the first file in the
order of sort in the last folder.
· When receiving “+10” KEY during play or pause, the master searches MP3 files 10 files next
to the current one in the order of sort of the file being played or paused. Upon completion of
search, the master starts playing the file.
· When the remaining files are less than 10 during play of the current file, the master plays the
first file.
· When receiving “VOL+/VOL-“ KEY while SEL_VOL terminal is set to H, the master controls
sound volume.
· Sound volume can be controlled at 32 steps from -∞ (minimum volume) to 0dB (maximum
volume).
· Since VOL+/VOL- KEY does not judge release of KEY, the master turns up or down volume
step by step when determining press of the KEY. Therefore, VOL KEY can be held down.
Target Spec 0.11
BU94601KV Functional Specifications
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· The master selects the device between USB memory and SD memory 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.
· Stop after selecting the device at the top tune of the device.
· REPEAT and RANDOM settings return to the initial values.
· When inserting both USB Memory and SD Memory card, or neither USB Memory nor SD
Memory card, the master precedes USB Memory.
· This key changes the mode of repeat.
· Press of “REPEAT” KEY toggles like: “repeat all tunes in memory” Æ “repeat one tune” Æ
“repeat within folder”.
· When selecting “repeat within folder”, the master repeats MP3 files within the folder being
played. The initial setting is “repeat all tunes in memory”.
· This key plays the range of ± 128 files from the current one being played in the order of sort at
random.
· “RANDOM” KEY is enabled to change mode only during play, pause or stop.
CHNG_DEV
REPEAT
RANDOM
Table VI.2.1.2.2 KEY Operation Enabled/Disabled
PLAY/
PAUSE
STOP
After recognizing device
(Search or pause)
Recognize Recognize
either USB both USB
or SD
and SD
During play of device
Recognize
either USB
or SD
Error
Recognize Searching Recognize Recognize
both USB
either USB both USB
and SD
or SD
and SD
{
{
{
{
×
×
×
×
×
{
{
{
×
×
FF
×
×
{
{
×
×
×
FB
×
×
{
{
×
×
×
FOLDER+
×
×
{
{
×
×
×
FOLDER-
×
×
{
{
×
×
×
VOL+
{
{
{
{
×
{
{
VOL-
{
{
{
{
×
{
{
+10
×
×
{
{
×
×
×
CHNG_DEV
×
{
×
{
×
×
{
REPEAT
{
{
{
{
×
×
×
RANDOM
{
{
{
{
×
×
×
{ = Enabled × = Disabled
VI.2.2 LED operation
Seven types of LEDs used to display the LSI operation states are controlled. Table VI.2.2 shows the types
and states of LEDs.
Table VI.2.2 Types of LEDs and operation description
Types of LEDs
LED_ERROR
LED_PLAY
LED_PSD
LED_PUSB
LED_ACCESS
LED_RANDOM
LED_REPEAT
Confidential
Operation description
Lights when an error occurs. This happens in the following cases:
(1) Neither USB memory nor SD memory card is connected. No MP3 file exists even
if these devices are connected.
(2) Communication error or disconnection occurs in the memory being played.
Lights during play. Blinks during pause.
Lights when SD memory card is connected and played.
Blinks when SD memory card is connected but SD memory card is not selected.
Goes off when SD memory card is not connected.
Lights when USB memory is connected and played.
Blinks when USB memory is connected but USB memory card is not selected.
Goes off when USB memory is not connected.
Lights during access to USB memory or SD memory card.
Lights during random play.
Lights during folder repeat. Blinks during repeat of one tune. Goes off during repeat all
tunes in memory
Target Spec 0.11
BU94601KV Functional Specifications
VI.3
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MODE2
VI.3.1 Command operation
You can operate commands via the I2C serial interface. When using the LSI in MODE2, it can be operated by
setting SEL_SLAVE to L. The length of command to be sent varies depending on which command is
selected.
Table VI.3.1.1 shows the command specifications.
Table VI.3.1.2 shows enabled/disabled state of each command.
Table VI.3.1.1 Command Operation Description
Operation description
Command
Command
Command
byte
1st
name
2nd
3rd
4th
length
PLAY
PAUSE
2
0x50
0x01
-
-
0x02
-
-
STOP
0x03
-
-
VOL+
0x04
-
-
VOL-
0x05
-
-
REPEAT
0x06
-
-
RANDOM
0x07
-
-
CHNG_DEV
0x08
-
-
Confidential
· When receiving “PLAY” command during stop, the master starts playing
the MP3 file currently selected. The order sorted from the root folder is
initially set.
· When receiving “PLAY” command during pause, the master restarts
playing the file from that point.
· When a state which disables MP3 decoding for more than 5 seconds
during play, status “DECO_ERR” is set to H. MP3 decoding is continued.
· When receiving “PLAY” command during fast forward (or backward)
playing, the master restarts normal playing the file from current point.
· When receiving “PAUSE” command during play, the master stops playing
the MP3 files temporarily.
· When receiving “STOP” command during play, pause or file search, the
master stops playing the MP3 file.
· When receiving “STOP” command during fast forward (or backward)
playing, the master stops playing the file.
· “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) to
0dB (maximum 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) to
0dB (maximum volume).
· This command selects the mode during repeat.
· REPEAT command toggles like: “repeat all tunes in memory” Æ “repeat
one tune” Æ “repeat within folder”.
· When STATUS RPT_OFF is set as ON by "REPRAND" command,
REPEAT command toggles like: “all play in memory” Æ “one file play” Æ
“play within folder”. In this mode, it stops upon completion of playing.
· When selecting “repeat within folder”, the master repeats MP3 files within
the folder being played.
· The initial setting is “repeat all tunes in memory”.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· This key plays the range of ± 128 files from the current one being played
in the order of sort at random.
· When STATUS RPT_OFF is set as ON by "REPRAND" command,
REPEAT command toggles like: “one random file play” Æ “all play with
random in memory”. In this mode, it stops upon completion of playing.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· The command selects the device between USB memory and SD memory
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.
· Stop after selecting the device at the top tune of the device.
· REPEAT and RANDOM settings return to the initial values.
Target Spec 0.11
BU94601KV Functional Specifications
ABORT
SET_RESUME_
INFO1
SET_RESUME_
INFO2
SET_RESUME_
INFO3
SET_RESUME_
INFO4
SET_RESUME_
INFO5
SET_RESUME_
INFO6
0x0C
0x41
0x42
0x43
0x44
0x45
8
0x51
0x46
SET_RESUME_
INFO7
0x47
SET_RESUME_
INFO8
0x48
FF
FF&PLAY
4
0x55
0x01
0x01
FFP_ON
0x02
FFP_OFF
0x03
FB
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0x02
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· This command interrupts Tag analysis.
· It interrupts Tag analysis only the file is being played.
RESUME INFO · This command sets byte 1 to 6 of 42-byte data obtained by
1byte-6byte
“READ_RESUME_INFO”.
RESUME INFO · This command sets byte 7 to 12 of 42-byte data obtained by
7byte-12byte
“READ_RESUME_INFO”.
RESUME INFO · This command sets byte 13 to 18 of 42-byte data obtained by
13byte-18byte
“READ_RESUME_INFO”.
RESUME INFO · This command sets byte 19 to 24 of 42-byte data obtained by
19byte-24byte
“READ_RESUME_INFO”.
RESUME INFO · This command sets byte 25 to 30 of 42-byte data obtained by
25byte-30byte
“READ_RESUME_INFO”.
RESUME INFO · This command sets byte 31 to 36 of 42-byte data obtained by
31byte-36byte
“READ_RESUME_INFO”.
· This command sets byte 37 to 42 of 42-byte data obtained by
“READ_RESUME_INFO”. When RESUME reproduction is possible, play
RESUME INFO
37byte-42byte
started that music. When RESUME is impossible, play the head music of
media is started.
· This command sets byte 37 to 42 of 42-byte data obtained by
“READ_RESUME_INFO”. When RESUME reproduction is possible, it
RESUME INFO
37byte-42byte
stops in the music. When RESUME is impossible, it stops at the head of
media.
· When receiving FF command during play, pause or stop, the master
searches the next MP3 file in the order of sort of the file being played or
paused.
· During play of the last file, the master returns to the first file in the order of
0x00
sort.
· Operation stops upon completion of search.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
0x00
0x00
· When receiving ”FF&PLAY” command during play, pause or stop, the
master searches the next MP3 file in the order of sort of the file being
played or paused.
· During play of the last file, the master returns to the first file in the order of
sort.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
· When receiving FFP_ON command during play, pause or stop, the master
starts fast forward playing from current point.
· When music finishes into that FFP_ON command is ON, the master
starts fast forward playing from top of the next file. When setting
“REPEAT” or “RANDOM”, master search next file by setup.
0x00
· When receiving FFP_OFF command during fast forward playing, the
master restarts normal playing from current point.
· When receiving “FB” command during play, pause or stop within 1sec
from top of file playing, the master searches the previous MP3 file in the
order of sort of files being played or paused. When receiving “FB”
command during play or pause over 1sec from top of file playing, the
master searches top of present MP3 file.
· The master returns to the last file during play of the first file within 1sec
from top of file playing.
· Upon completion of search, the operation stops.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
Target Spec 0.11
BU94601KV Functional Specifications
29/56
·· When receiving “FB&PLAY” command during play, pause or stop within
1sec from top of file playing, the master searches the previous MP3 file in
the order of sort of files being played or paused. When receiving
“FB&PLAY” command during play or pause over 1sec from top of file
playing, the master searches top of present MP3 file.
· The master returns to the last file during play of the first file within 1sec
from top of file playing.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
· When receiving FBP_ON command during play, pause or stop, the
master starts fast backward playing from current point.
· When music finishes into that FBP_ON command is ON, the master
FB&PLAY
0x01
FBP_ON
0x02
FBP_OFF
0x03
· When receiving FBP_OFF command during fast backward playing, the
master restarts normal playing from current point.
0x00
· When receiving “FOL+” command during play, pause or stop, the master
searches the next folder in the order of sort of the folder in which the file
being played or paused exists.
· The master returns to the first folder in the order of sort during play of the
last folder.
· The operation stops upon completion of search.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
0x01
· When receiving “FOL+&PLAY” command during play, pause or stop, the
master searches the next folder in the order of sort of the folder in which
the file being played or paused exists.
· The master returns to the first folder in the order of sort during play of the
last folder.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
FOL+
starts fast backward playing from end of previous file. When
setting “REPEAT” or “RANDOM”, master search previous file by
setup.
0x03
FOL+&PLAY
0x00
FOL-
0x00
0x04
FOL-&PLAY
+10
Confidential
0x01
0x05
0x00
0x00
· When receiving “FOL-“ command during play, pause or stop, the master
search the next folder in the sort of the folder in which the file being
played or paused exists.
· During play of the first folder, the master returns to the last folder in the
order of sort.
· The operation stops upon completion of search.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
· When receiving “FOL-&PLAY“ command during play, pause or stop, the
master searches the next folder in the order of sort of the folder in which
the file being played or paused exists.
· During play of the top folder, the master returns to the first folder in the
order of sort.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
· When receiving “+10” command during play, pause or stop, the master
th
searches the MP3 file of the 10 tune in the order of sort of the file being
played or paused.
· When the remaining files to be played are less than 10 in the order of sort,
the master returns to the first file.
· The operation stops upon completion of search.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
Target Spec 0.11
BU94601KV Functional Specifications
+10&PLAY
0x01
-10
0x00
0x06
-10&PLAY
USB_MNT_REA
DY
0x01
· This command prepares for USB memory mount.
4
0x5D 0x0B
0x01
0x00 · Be sure to send this command when STATUS turns to USB_INS=H and
BUSY=L..
0x58
0x00
SET_DOUT
SET_EQ
* See Chapter
VI.3.3.
SET_VOL
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· When receiving “+10&PLAY” command during play, pause or stop, the
th
master searches the MP3 file of the 10 tune in the order of sort of the file
being played or paused.
· When the remaining files to be played are less than 10 in the order of sort,
the master returns to the first file.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
· When receiving “-10” command during play, pause or stop, the master
th
searches the MP3 file of the previous 10 tune in the order of sort of the
file being played or paused.
· When playing the top 10 or less files in the order of sort, the master
returns to the first file.
· The operation stops upon completion of search.
· When TAG analysis is set by SEL_ID3 command, operation stops upon
completion of TAG analysis.
· When receiving “-10&PLAY” command during play, pause or stop, the
th
master searches the MP3 file of the previous 10 tune in the order of sort
of the file being played, paused or stopped.
· When playing the top 10 or less files in the order of sort, the master
returns to the first file.
· Operation starts playing, after completion of search.
· When TAG analysis is set by SEL_ID3 command, the master plays the file
upon completion of TAG analysis.
4
2
2
0x51
0x52
0x53
0x20
0x59
0x5B
· This command outputs the audio data in the I2S (32fs) format.
· When the line output is selected by SEL_DOUT terminal, the command is
ignored.
· This command outputs the audio data in the I2S (48fs) format.
· When the line output is selected by SEL_DOUT terminal, the command is
ignored.
· This command outputs the audio data in the I2S (64fs) format.
· When the line output is selected by SEL_DOUT terminal, the command is
ignored.
· This command performs serial audio interface (SPDIF) output.
· When the line output is selected by SEL_DOUT terminal, the command is
ignored.
0x01
0x01
0xFF
0x00
0x00
-
-
· This command stops serial audio interface (I2S, SPDIF) output.
· When the line output is selected by SEL_DOUT terminal, the command is
ignored.
This command turns OFF the EQ setting.
0x01
-
-
POPS
0x02
-
-
JAZZ
0x03
-
-
ROCK
0x04
-
-
CLASSIC
0x05
-
-
R&B
0x07
-
-
This command turns OFF the EQ setting.
0x08
-
-
BASS BOOST1
0x09
-
-
POPS+BASS BOOST1
0x0A
-
-
JAZZ+BASS BOOST1
0x0B
-
-
ROCK+BASS BOOST1
0x0C
-
-
CLASSIC+BASS BOOST1
0x0D
-
-
R&B+BASS BOOST1
0x0F
-
-
Setting
value
-
-
BASS BOOST2
· This command sets the sound volume to the 2nd byte value of the
command. The setting value ranges 32 steps from 0x00 to 0x1F.
Any value outside of the above range is ignored.
Target Spec 0.11
BU94601KV Functional Specifications
0x00
0x01
0x02
0x03
REPRAND
SEL_ID3
SEL_TOC
SEL_12MOUT
SEL_WDT
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2
2
2
2
2
0x54
-
-
-
-
-
-
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· This command repeats all the tunes within the memory. This is initially
set.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· The command repeats playing the MP3 file within the folder being played.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
-
· This command repeats playing the MP3 file being played.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
-
· This command plays through the range of ±128 files in the order of the
sort from the current one being played at random.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
0x04
-
-
0x05
-
-
0x06
-
-
0x07
-
-
0x00
-
-
0x56
0x01
-
-
0x00
-
-
0x57
0x01
-
-
0x00
-
-
0x01
-
-
0x00
-
-
0x01
-
-
0x58
0x5A
· This command plays all the tunes within the memory. STATUS RPT_OFF
is set as ON.
· It stops after the last file playing.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· This command plays all the tunes within the folder being played. STATUS
RPT_OFF is set as ON.
· It stops after the last file playing within the folder.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· This command plays one tunes. STATUS RPT_OFF is set as ON.
· It stops after the file playing.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· This command plays through the range of ±128 files in the order of the
sort from the current one being played at random. STATUS RPT_OFF is
set as ON.
· It stops after the file playing.
· The last setting to “REPRAND”, “REPEAT” and “RANDOM” commands
will be enabled.
· This command does not perform ID3Tag analysis written to the MP3 file.
· The file played immediately after set will be enabled first.
· This command analysis ID3Tag written to the MP3 file.
· The file played immediately after set will be enabled first.
· Upon completion of Tag analysis, the data is written to the status register.
· This command does not perform TOC analysis.
· TOC analysis is not performed at initial setting.
· When receiving the command, inserting into the device or changing the
device, the master analyzes the total folders (including root directory) and
total MP3 files within the device.
· The number of total MP3 files conforms to SEL_MP3 terminal.
· When receiving the command, only change from OFF to ON is executed.
· Upon completion of TOC analysis, the master returns to the top tune of
the device and stops.
· After TOC analysis, the data is written to the status register.
· This command stops 12MHz clock output from CLKOUT12 terminal.
· This command enables 12 MHz clock output from CLKOUT12 terminal.
· This command stops WDT.
· This command writes “1” to STATUS WDT_RFLG.
Target Spec 0.11
BU94601KV Functional Specifications
0x00
SET_RPM
6
SET_UPLOAD_
FILE1
SET_UPLOAD_
FILE2
UPLOAD_END
8
setting
0x5B
0x01
0x51
0x51
8
0x51
0x52
2
0x51
0x53
setting
0x00
NAME[0:5]
NAME[6:7]
EXT[0:2]
-
32/56
· This command set up playtime and skiptime for fast forward playing and
fast backward playing. Fast forward and fast backward playing repeat this
cycle by making {playtime(M) + skiptime(N) +error(O)} into 1 cycle. With
an error, it depends on the cajoled error between the minimum decoding
unit and playtime, and the real time which searches skiptime. Errors differ
by every file and every composition in memory.
· This command set up that playtime is M[15:0]=[4th byte, 3rd byte] and
skiptime are N[15:0]=[6th byte and 5th byte]. Initial value set playtime is
300 mili second=M[15:0]=[4 th byte=x01, 3rd byte=x2C] and skiptime is
2100 mili second=N[15:0]=[6 th byte=x08, 5 th byte=x34].
When command set up to 0x0, setting value is initial value.
The playtime should set up 300ms or more, and skiptime should set up
below (playtime x16).
-
· This command set up the attenuation level under fast forward and
backward playing.
An attenuation level serves as (-6dB X [3rd byte]).
A setup can be specified from 0x00 to 0x10.As for an initial value,
0x02=-12dB is set up. It becomes equivalent to MUTE by setup of 0x10.
Specify the part of the first half of the file name of the file for File Read
Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to eight bytes.
Specify the part of the latter half of the file name of the file for File Read
Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to eight bytes.
Bury it by 0x00 when the file extension doesn't come up to three bytes.
It targets neither the file name comparison since 0x00 of the end in the
comparison.
The File Read function is ended.
Transmit after completing the file reading.
The ACK timeout of the command under memory mount is set up.
SET_TOUT_M
8
0x5D
0x07
The set point x100 (msec) is timeout.
setting
Mount ERROR will be carried out if a timeout is carried out.
An initial value is 30sec.
The ACK timeout of the PLAY or STOP or PAUSE in commands at the time of
PAUSE (except during mount) is set up.
SET_TOUT_C
8
0x5D
0x08
setting
The set point x100 (msec) is timeout.
Communication ERROR will be carried out if a timeout is carried out.
An initial value is 5sec.
The weight time after bus reset is set up at the time of USB memory
SET_USB_R_W
AIT
6
0x5D
0x09
setting
0x00
recognition.
The set point x200 (msec) is weight time.
As for an initial value, 200msec is set up.
A vendor code and Product ID are stored in COMAREA.
Please read COMAREA after GET_VENDOR command transmission and
acquire code data.
GET_ VENDOR
2
0x5F
0x16
-
-
Offset
0x20：Vendor code Lower byte
0x21：Vendor code Upper byte
0x22：Product code Lower byte
0x23：Product code Upper byte
Force mounted USB memory to be disconnected.
FORCE_DISCO
N_USB
2
0x5D 0x02
-
-
2
0x5D 0x0A
-
-
4
0x5D 0x0C
0x01
0x00
4
0x5D 0x0C
0x00
0x00 command.
Mounts USB memory again, which Mount ERROR occurred.
FORCE_CON_U
SB
Force SD memory to be disconnected, which Mount ERROR occurred
FORCE_DISCO
N_SD
Mounts SD memory again, which was disconnected by FORCE_DISCON_SD
FORCE_CON_S
D
Confidential
Target Spec 0.11
BU94601KV Functional Specifications
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LUN, which USB memory mounts, is specified.
LUN specified at the time of USB connection mounts.
SET_LUN
4
0x5D
0x0D
setting
0x00
When another LUN is already mounted, it re-mounts to specified LUN.
When not specifying LUN, effective LUN becomes an AUTO setup and LUN
detected first is mounted at the time of USB memory connection.
(Initial value)
RESET_LUN
Confidential
2
0x5D
0x0E
-
-
Effective LUN is set to AUTO and LUN detected first comes to be mounted at
the time of USB memory connection.
Target Spec 0.11
BU94601KV Functional Specifications
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Table VI.3.1.2 Command Enabled/Disabled in Various States
PLAY
PAUSE
After recognizing
device, search or
During play of device
Search
pause
ing
Recognize Recognize Recognize Recognize
either USB either USB either USB both USB
or SD
or SD
or SD
and SD
○
○
×
×
×
×
×
○
○
×
During
FFP
During
FBP
○
○
○
○
Error
Recognize Recognize
either USB both USB
or SD
and SD
×
×
×
×
STOP
×
×
○
○
○
○
○
×
×
VOL+
○
○
○
○
×
○
○
○
○
VOL-
○
○
○
○
×
○
○
○
○
REPEAT
○
○
○
○
×
○
○
×
×
RANDOM
○
○
○
○
×
○
○
×
×
CHNG_DEV
×
○
×
○
×
○
○
×
○
ABORT
SET_RESUME_
INFO1-8
FF
×
×
×
×
○
×
×
×
×
○
○
○
○
×
×
×
×
×
○
○
○
○
×
×
×
×
×
FF&PLAY
○
○
○
○
×
×
×
×
×
FFP_ON
×
×
○
○
×
○
○
×
×
FFP_OFF
×
×
×
×
×
○
×
×
×
FB
○
○
○
○
×
×
×
×
×
FB&PLAY
○
○
○
○
×
×
×
×
×
FBP_ON
×
×
○
○
×
○
○
×
×
FBP_OFF
×
×
×
×
×
×
○
×
×
FOL+
○
○
○
○
×
×
×
×
×
FOL+&PLAY
○
○
○
○
×
×
×
×
×
FOL-
○
○
○
○
×
×
×
×
×
FOL-&PLAY
○
○
○
○
×
×
×
×
×
＋１０
○
○
○
○
×
×
×
×
×
＋１０&PLAY
○
○
○
○
×
×
×
×
×
−１０
○
○
○
○
×
×
×
×
×
−１０&PLAY
○
○
○
○
×
×
×
×
×
USB_MNT_READY
○
○
○
○
○
○
○
○
○
SET_DOUT
○
○
○
○
×
○
○
○
○
SET_EQ
○
○
○
○
×
○
○
○
○
SET_VOL
○
○
○
○
×
○
○
○
○
REPRAND
○
○
○
○
×
○
○
×
×
SEL ID3
○
○
○
○
×
○
○
×
×
SEL_TOC
○
○
○
○
×
○
○
×
×
SEL 12MOUT
○
○
○
○
×
○
○
○
○
SET_WDT
○
○
○
○
×
○
○
○
○
SET_RPM
○
○
○
○
×
○
○
○
○
SET_UPLOAD_FILE1
After recognizing the USB memory, only the halt condition is the command effective.
SET_UPLOAD_FILE2
UPLOAD_END
SET_TOUT_M
○
○
○
○
×
○
○
○
○
SET_TOUT_C
○
○
○
○
×
○
○
○
○
SET_USB_RWAIT
○
○
○
○
×
○
○
○
○
GET_VENDOR
FORCE_DISCON_US
B
○
○
○
○
×
○
○
○
○
○
○
○
○
○
○
○
×
×
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Target Spec 0.11
BU94601KV Functional Specifications
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FORCE_CON_USB
×
×
×
×
×
×
×
○
○
FORCE_DISCON_SD
×
×
×
×
×
×
×
○
○
FORCE_CON_SD
×
×
×
×
×
×
×
○
○
SET_LUN
○
○
○
○
×
○
○
○
○
RESET_LUN
○
○
○
○
×
○
○
○
○
{ = Enabled
Confidential
× = Disabled
Target Spec 0.11
BU94601KV Functional Specifications
VI. 3.2
36/56
Status output
The operation information, such as internal status, play time information, folder information, file information,
and ID3Tag information is output using an I2C interface.
Statuses as shown in Table VI. 3.2.1 MODE 2 Status Register Map are output.
The status register has a ring buffer structure of OFFSET 0x00-0x7F. The OFFSET position is automatically
incremented after reading byte data.
Status read specifies OFFSET of the status register map. There are two methods available: to read a desired
number of bytes continuously from the OFFSET position and to read the data by one command without
specifying the OFFSET position. Figure VI.3.2.2 shows the status output commands. Table VI.3.2.3 shows
the enabled/disabled state of the status output commands.
Status register outputs a byte data of OFFSET 0x00-0x7F by "Little Endian" format
Table VI. 3.2.1 MODE2 Status Register Map
OFFSET
0x00
0x01
Status
bit7
(MSB)
bit6
bit5
STATUS1
ERROR
0: No error
1: Error occurs
SEARCH
0: Search stop
1: Searching
SEL_ID3
0: ID3Tag OFF
1: ID3Tag ON
STATUS2
USBINS
0: USB not
connected
1: USB
connection
detected
SDINS
USBFILE
0: SD not
Playable file within
connected
USB memory
1: SD connection
0: Absent
detected
1: Present
0x02
STATUS3
BUSY
0: Not BUSY
1: BUSY
MCHNG
Tune number
change detection
0: Tune
ended/stopped
1: Playing/
stop before
playing
0x03
STATUS4
0
0
0
0x04
STATUS5
12MOUT
12 MHz clock
output
0: OFF
1: ON
WDT_RFLG
0: after RESET
0
0x05
VOLINF
0
0
0
0x06
EQINF
0x07
PRECOM
0x08
Confidential
DOUT
bit4
0
bit3
bit2
bit1
SEL_TOC
0: TOC display
DEC_ERR
STOP
PAUSE
0: No error 0: Not stopped 0: Not paused
OFF
1: TOC display 1: Error occurs 1. Stopping
1: Pausing
ON
SDFILE
Playable file
within SD
memory
0: Absent
1: Present
bit0
(LSB)
Play
0: Not played
1: Playing
PDEVUSB
PDEVSD
MDEVUSB
MDEVSD
PDEVUSB USB PDEVUSB SD
USB memory SD memory
memory
memory
0: Not
0: Not
0: Stopping
0: Stopping
recognized
recognized
1: Playing/Tag 1: Playing/Tag
1: Recognized 1: Recognized
analyzing
analyzing
TINFSD
TINFUSB
Total number
Total number of
ID3EXIST
of folders/files
folders/files
TAG information
within SD
within USB
0: Not exist
memory
memory
1: Exist
0: Not
0: Not obtained
obtained
1: Obtained
1: Obtained
RPT_OFF
RANDOM
REP1
REPFOL
Setting after Random play One-tune repeat Folder repeat
0
last file playing
setting
setting
setting
0: repeat
0: OFF
0: OFF
0: OFF
1: stop
1: ON
1: ON
1: ON
FBP
FFP
RES_ERR
Fast backward Fast forward
Resume error
0
playing
playing
0: No error
0
0: OFF
0: OFF
1: Error
1: ON
1: ON
occurs
ID3RSID1
ID3Tag
Version1
0: Absent
1: Present
ID3RSID2
ID3Tag
Version2
0: Absent
1: Present
VOLINF
Sound volume information
[ 4: 0 ]
EQINF
Equalizer setting information
0000: OFF
0001: POPS
0010: JAZZ
0011: ROCK
0100: CLASSIC
0101: R&B
1000: BASS BOOST
1001: POPS+BASS
1010: JAZZ+BASS
1011: ROCK+BASS
1100: CLASSIC+BASS
1101: R&B+BASS
1111 BASS BOOST2
0
0
0
0
0
0
DOUT
Audio output
0: LINE output
1: I2S / SPDIF
PRECOM
Previous Command information
0: normal
1: miss
Vendor code
HUB
Un Support device
Detection Flag
Detection Flag
Detection Flag
0: appleNot
0: Not Detection 0: Not Detection
Detection
1: Detection
1: Detection
1: appleDetection
Target Spec 0.11
0
0
BU94601KV Functional Specifications
37/56
0x09
DOUTINF
DOUTINF
I2S format status
0x58: 32fs(Initial value)
0x59: 48fs
0x5B: 64fs
0x00: OFF
0x01: SPDIF output
0x0A
PFOLNL
PFOLNL
Playing folder number lower-order byte
[7:0]
0x0B
PFOLNH
PFOLNH
Playing folder number upper-order byte
[15:8]
0x0C
PFILENL
PFILENL
Playing file number lower-order byte
[7:0]
0x0D
PFILENH
PFILENH
Playing file number upper-order byte
[15:8]
0x0E
PSEC
Playing time second information
[7:4]x10 sec.
Playing time second information
[3:0]x1 sec.
0x0F
PMIN
Playing time minute information
[7:4]x10 min.
Playing time minute information
[3:0]x1 min.
0x10
TFOLUSBL
TFOLUSBL
USB memory total folder number lower -order byte
[7:0]
0x11
TFOLUSBH
TFOLUSBH
USB memory total folder number upper-order byte
[15:8]
0x12
TFILEUSBLL
TFILEUSBLL
USB memory total file number lower -order byte [15:0]
[7:0]
0x13
TFILEUSBLH
TFILEUSBLH
USB memory total file number upper-order byte [15:0]
[15:8]
0x14
TFILEUSBHL
TFILEUSBHL
USB memory total file number lower -order byte [31:16]
[23:16]
0x15
TFILEUSBHH
TFILEUSBHH
USB memory total file number upper-order byte [[31:16]
[31:24]
0x16
TFOLSDL
TFOLSDL
SD memory total folder number lower -order byte
[7:0]
0x17
TFOLSDH
TFOLSDH
SD memory total folder number upper-order byte
[15:8]
0x18
TFILESDL
TFILESDLL
SD memory total file number lower -order byte [15:0]
[7:0]
0x19
TFILESDLH
TFILESDLH
SD memory total file number upper-order byte [15:0]
[15:8]
0x1A
TFILESDHL
TFILESDHL
SD memory total file number lower -order byte [31:16]
[23:16]
0x1B
TFILESDHH
TFILESDHH
SD memory total file number upper-order byte [31:16]
[31:24]
0x1C
LANGL
LANGL
Language code information lower -order byte [7:0]
0x1D
LANGH
LANGH
Language code information upper -order byte [15:8]
Confidential
Target Spec 0.11
BU94601KV Functional Specifications
0x20
|
0x7F
COMAREA
Confidential
COMAREA
Data common area
The content varies depending on the status read command.
Target Spec 0.11
38/56
BU94601KV Functional Specifications
39/56
Table VI. 3.2.2 MODE2 Status Output Commands
Command name
Command
1st byte
2nd byte
Status output
bytes
Status
· The command outputs the desired bytes of
data from the OFFSET position specified in the
READ_BUFF
0x5E
OFFSET
status register map.
Optional
· Since the status register functions as a ring
buffer of 0x00-0x7F, the master returns to 0x00
after OFFSET position 0x7F during data read.
READ_STATUS
0x00
READ_PLAY_INFO
0x01
READ_VOL
0x02
5
1
READ_ID3_TITLE
0x04
64
READ_ID3_ALBUM
0x06
READ_FILE_NAME
0x07
0x0A-0x0F in the status buffer.
· This command outputs the data of OFFSET
1
0x03
0x05
0x00-0x04 in the status buffer.
· This command outputs the data of OFFSET
6
READ_EQ
READ_ID3_ARTIST
· This command outputs the data of OFFSET
0x05 in the status buffer.
· This command outputs the data of OFFSET
0x06 in the status buffer.
· This command outputs the data of
ID3Tag Title. *1
· This command outputs the data of
64
ID3Tag Artist.*1
· This command outputs the data of
64
ID3Tag Album.*1
· This command outputs the data of
64
playing MP3 file name. see VI.1.4
· This command outputs the data of
READ_FOLDER_NAME
0x08
64
folder name includes playing MP3 file. see
VI.1.4
READ_RESUME_INFO
* See Chapter VI.3.4.
READ_VERSION
0x5F
0x09
42
0x10
1
· This command outputs the data to resume.
see VI.3.4
· This command outputs the data of Firmware
version.
·
READ_FILE_SIZE
0x11
4
The size of a specified file of the File Read
function is acquired. It outputs with LittleEndian.
·
When the file doesn't exist, "0xFF, 0xFF, 0xFF,
and 0xFF" is output.
·
The file data of a specified file of the File Read
function is read.
READ_FILE_DATA
0x12
96
·
The 92byte data reading is possible by one
time.
·
Four head bytes are file offsets. It outputs it
with LittleEndian.
READ_LUN
0ｘ17
1
READ_LUN_NUM
0ｘ18
1
READ_SET_LUN
0ｘ19
1
·
Read LUN of the USB memory specified or
mounted now.
·
Read the total of LUN of the USB memory which is
connected now.
·
Read LUN specified by the "SET_LUN" command.
In not setting up, 0xFF is read.
*1：BOM(Byte Order Mark) might enter two head bytes according to ID3 data
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Target Spec 0.11
BU94601KV Functional Specifications
40/56
Table VI.3.2.3 Command Enabled/Disabled in Various States
After recognizing During
device (stopping play of Searching
after searching) device
READ_BUFF
{
{
{
{
READ_STATUS
{
{
{
{
READ_PLAY_INFO
{
{
×
×
READ_VOL
{
{
×
{
READ_EQ
{
{
×
{
READ_ID3_TITLE
{
{
×
×
READ_ID3_ALBUM
{
{
×
×
READ_ID3_ARTIST
{
{
×
×
READ_FILE_NAME
{
{
×
×
READ_FOLDER_NAME
{
{
×
×
READ_RESUME_INFO
{
{
×
×
READ_VERSION
{
{
×
×
READ_FILE_SIZE
After recognizing the USB memory, only the halt
condition is the command effective.
READ_FILE_DATA
READ_LUN
○
○
×
○
READ_LUN_NUM
○
○
×
○
READ_SET_LUN
○
○
×
○
{ = Enabled, × = Disabled
Confidential
Error
Target Spec 0.11
BU94601KV Functional Specifications
41/56
VI.3.3 Equalizer
You can select 5 types of equalizer and 2 types of BassBoost for the audio line output using a command (see
Table VI. 3.3.1). Combination of equalizer and BassBoost1 is available.
Equalizer setting is enabled even when line output is not selected. No change of sound quality by the
equalizer is found in digital outputs.
Figures VI.3.3.1 to VI. 3.3.6 show the frequency characteristics of each filter.
POPS
20
15
POPS(0x52, 0x01)
POPS+BassBoost1(0x52, 0x09)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure IV.3.3.1 POPS Frequency Characteristics
JAZZ
20
15
JAZZ(0x52, 0x02)
JAZZ+BassBoost1(0x52, 0x0A)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
Freq.(Hz)
Figure VI. 3.3.2 JAZZ Frequency Characteristics
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Target Spec 0.11
100000
BU94601KV Functional Specifications
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Rock
20
15
ROCK(0x52, 0x03)
ROCK+BassBoost1(0x52, 0x0B)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure VI. 3.3.3 ROCK Frequency Characteristics
Classic
20
15
CLASSIC(0x52, 0x04)
CLASSIC+BassBoost1(0x52, 0x0C)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
Freq.(Hz)
Figure VI. 3.3.4 CLASSIC Frequency Characteristics
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Target Spec 0.11
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R&B
20
15
R&B(0x52, 0x05)
R&B+BassBoost1(0x52, 0x0D)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
10000
100000
Freq.(Hz)
Figure VI. 3.3.5 R&B
BassBoost
20
15
BassBoost1(0x52, 0x08)
BassBoost2(0x52, 0x0F)
Mag.(dB)
10
5
0
-5
-10
10
100
1000
Freq.(Hz)
Figure VI. 3.3.6 BassBoost
Confidential
Target Spec 0.11
10000
100000
BU94601KV Functional Specifications
44/56
VI. 3.4 Resume information
This LSI outputs the information required to implement the resume function using the “READ_RESUME_INFO”
command.
Table VI.3.4 shows the resume information status register structure.
Table VI. 3.4 Resume Information Register Structure
Status
OFFSET
Resume information
Information data
0x20-0x49 Resume
[42 bytes]
i.
Resume Information data :
Shows the file’s information and play’s information now.
This is a number uniquely set to the LSI.
Since the above 42-byte resume information is used to execute resume play, do not change the contents
before use. When you use changed contents, the action cannot assure.
You can implement the resume function by reading the resume information read using the
“READ_RESUME_INFO” command and then writing the information using the “SET_RESUME_INFO1-7”
command. After “SET_RESUME_INFO1-7” is all written, the LSI automatically searches and plays a
resume file from the time, which read “READ_RESUME_INFO” command upon completion of writing of
“SET_RESUME_INFO7”.
VI. 3.5 Language Code Information
This LSI outputs Language Code Information to Status register. (OFFSET=0x1C and 0x1D)
Table VI.3.5 shows the Language Code information status register structure.
Table VI. 3.5 Language Code Information Register Structure
LANGH
OFFSET=0x1D
LANGL
OFFSET=0x1C
0x00
0x00
0x00
0x00
0x00
0x01
0x02
0x03
Confidential
Language Code
ID3V1 TAG or ISO8859-1 (ID3V2 TAG)
UTF-16 (ID3V2 TAG)
UTF-16BE (ID3V2 TAG)
UTF-8 (ID3V2 TAG)
Target Spec 0.11
BU94601KV Functional Specifications
VI.4
45/56
MODE3
MODE3 specifies and plays the MP3 file to be played by the master microcomputer by outputting the MP3
file/folder status information, written to USB memory or SD memory card, to the master microcomputer.
VI.4.1 Command operation
The LSI sends commands to obtain the file/folder information in USB memory or SD memory card, to analyze
ID3Tag and to set a file to be played and start playing it.
Table VI.4.1 shows the commands available in MODE3. When sending a command other than listed below in
MODE3, it is ignored.
Table VI.4.1 MODE3 Command
Command
Command
Command name
byte
length
PAUSE
2
Operation description
1st
2nd
3rd - 6th
0x50
0x02
-
· When receiving “PAUSE” command during play, the master stops
playing the MP3 files temporarily.
· This command stops the operations of ID3Tag analysis.
STOP
0x03
-
· This command stops playing the MP3 file and stop at top of this
MP3 file.
VOL+
VOL-
0x04
0x05
-
· 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) to 0dB (maximum 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) to 0dB (maximum volume).
· The command selects the device between USB memory and SD
memory card.
CHNG_DEV
0x08
-
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 command is ignored.
· After selecting the device, the LSI waits for a command.
· This command obtains the folder information (*see VI.4.3) and file
information (*see VI.4.3) for the folder set by SET_DIRECT.
GET_DIRECT
0x09
-
· Read the information using the status commands
“READ_FOLDER_INFO” and “READ_FILE_INFO”.
· The status of “ANA_END”, “FOLINF”, “FILINF”, “FOLFULL” and
“FILFULL” are reset.
· This command obtains the number of files and folders for the folder
set by SET_DIRECT.
GET_NUMBER
0x0A
-
· Read the information using status command “READ_NUMBER”.
· The number of non- MP3 files is ignored.
· The statuses of “ANA_END” are reset.
· This command performs TAG analysis for the valid file set by
SET_DIRECT.
GET_ID3
0x0B
-
· The command also analyzes even if the folder is not specified.
However, at the end of analysis, a status in which Tag information is
not contained will be output.
- The statuses of “ID3EXIST”, “ID3RSID1” and “ID3RSID2” are reset.
· This command stops the operations of Tag analysis, folder analysis
ABORT
0x0C
-
and file analysis.
· The statuses of “ANA_END”, “FOLINF”, “FILINF”, “FOLFULL”,
“FILFULL”, "ID3EXIST", "ID3RSID1" and "ID3RSID2" are reset.
Confidential
Target Spec 0.11
BU94601KV Functional Specifications
PLAY_DIRECT
USB_MNT_READ
Y
0x0D
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· This command starts playing the MP3 file set by SET_DIRECT.
· The command plays the file even when the preset file is not a MP3
file or when the folder is specified, the command plays the specified
one. If MP3 decode disabled is detected for 5 seconds or longer,
the command outputs status "DECO_ERR"=H.
-
· This command prepares for USB device mount.
4
0x5D 0x0B 0x01
0x00 · Be sure to send this command when STATUS turns to USB_INS=H
and BUSY=L..
· This command outputs audio data in the I2S (32fs) format.
0x58
· When line output is selected by SEL_DOUT terminal, the command
is ignored.
· This command outputs audio data in the I2S (48fs) format.
0x00
0x59
· When line output is selected by SEL_DOUT terminal, the command
is ignored.
· This command outputs audio data in the I2S (64fs) format.
SET_DOUT
4
0x20
0x5B
· When line output is selected by SEL_DOUT terminal, the command
is ignored.
· This command performs serial audio interface (SPDIF)output.
0x51
0x01
0x01
· When line output is selected by SEL_DOUT terminal, the command
is ignored.
· This command performs serial audio interface (I2S, SPDIF) output.
0xFF
0x00
· When line output is selected by SEL_DOUT terminal, the command
is ignored.
· This command sets the number of obtained folders for those set by
SET_DIRECT.
SET_NUMBER
6
0x21
0xXX
· Parameter: “Number of obtained folders: 2 bytes” + “Number of
obtained MP3 files: 2 bytes”.
By specifying “0”, all the folders and
files are obtained.
SET_RESUME_
INFO1
0x41
SET_RESUME_
INFO2
0x42
SET_RESUME_
INFO3
0x43
SET_RESUME_
INFO4
0x44
8
0x51
SET_RESUME_
INFO5
0x45
RESUME
INFO
1byte-6byte
RESUME
INFO
7byte-12byte
RESUME
INFO
13byte-18byt
e
RESUME
INFO
19byte-24byt
e
RESUME
INFO
25byte-30byt
e
RESUME
INFO
31byte-36byt
e
SET_RESUME_
INFO6
0x46
SET_RESUME_
INFO7
RESUME
INFO
0x47
37byte-42byte
SET_EQ
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· This command sets byte 7 to 12 of 42-byte data obtained by
“READ_RESUME_INFO”.
· This command sets byte 13 to 18 of 42-byte data obtained by
“READ_RESUME_INFO”.
· This command sets byte 19 to 24 of 42-byte data obtained by
“READ_RESUME_INFO”.
· This command sets byte 25 to 30 of 42-byte data obtained by
“READ_RESUME_INFO”.
· This command sets byte 31 to 36 of 42-byte data obtained by
“READ_RESUME_INFO”.
· This command sets byte 37 to 42 of 42-byte data obtained by
“READ_RESUME_INFO”. When RESUME reproduction is possible,
play started that music. When RESUME is impossible, play the
head music of media is started.
· This command sets byte 37 to 42 of 42-byte data obtained by
RESUME
“READ_RESUME_INFO”. When RESUME reproduction is possible,
INFO
0x48
it stops in the music. When RESUME is impossible, it stops at the
37byte-42byte
head of media.
SET_RESUME_
INFO8
*See Chapter
· This command sets byte 1 to 6 of 42-byte data obtained by
“READ_RESUME_INFO”.
2
0x52
0x00
-
· This command turns OFF EQ setting.
0x01
-
· POPS
Target Spec 0.11
BU94601KV Functional Specifications
VI.3.3.
SET_VOL
0x53
0x02
-
· JAZZ
0x03
-
· ROCK
0x04
-
· CLASSIC
0x05
-
· R&B
0x07
-
· This command turns OFF EQ setting.
0x08
-
· BASS BOOST
0x09
-
· POPS+BASS
0x0A
-
· JAZZ+BASS
0x0B
-
· ROCK+BASS
0x0C
-
· CLASSIC+BASS
0x0D
-
· R&B+BASS
0x0F
-
· BASS BOOST2
· Set sound volume the second byte value of the command.
Setting
-
value
47/56
The
setting values are 32 steps ranging from 0x00 to 0x1F.
· A value specified outside the above range will be ignored.
. Start the fast-forwarding playback from a present playback position
FFP_ON
0x02
0x00
0x03
0x00
0x02
0x00
0x03
0x00
0x01
FFP_OFF
4
. Stop the fast-forwarding playback by this command fast-forwarding
0x55
0x02
FBP_OFF
0x00
2
playback, and usually playback.
. Start the rewinding playback from a present playback position by this
FBP_ON
SEL_12MOUT
by this command of playbacking and pausing.
. Stop the rewinding playback by this command rewinding playback,
-
0x58
0x01
command of playbacking and pausing.
-
and usually playback.
· This command stops 12 MHz clock output from CLKOUT12
terminal.
· This command enables 12 MHz clock output from CLKOUT12
terminal.
· This command specifies the current position of the folder/file by
SET_DIRECT
SET_WDT
SET_RPM
SET_RPM
Confidential
8
2
6
6
0x59
0x5A
specifying the folder/file information access data (6 bytes).
0x00
0xXX
0x00
-
· By specifying “0”, the position is set to the root folder.
· This command stops Watch Dog Timer.
0x01
-
· This command writes “1” to STATUS WDT_RFLG.
0x5B 0x00
setting
0x5B 0x01 setting 0x00
· Specify access data (6 bytes) at 0xXX.
· This command set up playtime and skiptime for fast forward playing
and fast backward playing. Fast forward and fast backward playing
repeat this cycle by making {playtime(M) + skiptime(N) +error(O)}
into 1 cycle. With an error, it depends on the cajoled error between
the minimum decoding unit and playtime, and the real time which
searches skiptime. Errors differ by every file and every composition
in memory.
· This command set up that playtime is M[15:0]=[4th byte, 3rd byte]
and skiptime are N[15:0]=[6th byte and 5th byte]. Initial value set
playtime is 300 mili second=M[15:0]=[4 th byte=x01, 3rd byte=x2C]
and skiptime is 2100 mili second=N[15:0]=[6 th byte=x08, 5 th
byte=x34].
When command set up to 0x0, setting value is initial value.
The playtime should set up 300ms or more, and skiptime should set
up below (playtime x16).
· This command set up the attenuation level under fast forward and
backward playing.
An attenuation level serves as (-6dB X [3rd byte]).
A setup can be specified from 0x00 to 0x10.As for an initial value,
0x02=-12dB is set up. It becomes equivalent to MUTE by setup of
0x10.
Target Spec 0.11
BU94601KV Functional Specifications
SET_UPLOAD_FIL
E1
8
0x51
0x51
SET_UPLOAD_FIL
E2
8
0x51
0x52
UPLOAD_END
2
0x51
0x53
48/56
NAME[0:5]
Specify the part of the first half of the file name of the file for File Read
Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to eight
bytes.
NAME[6:7]
EXT[0:2]
Specify the part of the latter half of the file name of the file for File
Read Function.
*Bury it by 0x20 when the file name(NAME) doesn't come up to eight
bytes.
Bury it by 0x00 when the file extension doesn't come up to three bytes.
It targets neither the file name comparison since 0x00 of the end in the
comparison.
-
-
The File Read function is ended.
Transmit after completing the file reading.
The ACK timeout of the command under memory mount is set up.
SET_TOUT_M
8
0x5D
0x07
The set point x100 (msec) is timeout.
setting
Mount ERROR will be carried out if a timeout is carried out.
An initial value is 30sec.
The ACK timeout of the PLAY or STOP or PAUSE in commands at the
time of PAUSE (except during mount) is set up.
SET_TOUT_C
8
0x5D
0x08
setting
The set point x100 (msec) is timeout.
Communication ERROR will be carried out if a timeout is carried out.
An initial value is 5sec.
The weight time after bus reset is set up at the time of USB memory
SET_USB_R_WAI
T
6
0x5D
0x09 setting 0x00
recognition.
The set point x200 (msec) is weight time.
As for an initial value, 200msec is set up.
A vendor code and Product ID are stored in COMAREA.
Please read COMAREA after GET_VENDOR command transmission
and acquire code data.
GET_ VENDOR
2
0x5F
0x16
-
-
Offset
0x20：Vendor code Lower byte
0x21：Vendor code Upper byte
0x22：Product code Lower byte
0x23：Product code Upper byte
Force mounted USB memory to be disconnected.
FORCE_DISCON_
USB
2
0x5D 0x02
-
-
2
0x5D 0x0A
-
-
4
0x5D 0x0C 0x01
0x00
4
0x5D 0x0C 0x00
0x00
Mounts USB memory again, which Mount ERROR occurred.
FORCE_CON_US
B
Force SD memory to be disconnected, which Mount ERROR occurred
FORCE_DISCON_
SD
FORCE_CON_SD
Mounts
SD
memory
again,
which
was
disconnected
by
FORCE_DISCON_SD command.
LUN, which USB memory mounts, is specified.
LUN specified at the time of USB connection mounts.
SET_LUN
4
0x5D
0x0D setting 0x00
When another LUN is already mounted, it re-mounts to specified LUN.
When not specifying LUN, effective LUN becomes an AUTO setup and
LUN detected first is mounted at the time of USB memory connection.
(Initial value)
RESET_LUN
Confidential
2
0x5D
0x0E
-
-
Effective LUN is set to AUTO and LUN detected first comes to be
mounted at the time of USB memory connection.
Target Spec 0.11
BU94601KV Functional Specifications
49/56
Table VI. 4.2 Command Enabled/Disabled in Various Statuses
After recognizing
device
PAUSE
STOP
Recognize Recognize
either USB both USB
or SD
and SD
×
×
×
×
During play of device
Analyzing
×
×
Recognize Recognize
either USB both USB
or SD
and SD
{
{
{
{
Error
Searching
×
{
Recognize Recognize
either USB both USB
or SD
and SD
×
×
×
×
VOL+
{
{
×
{
{
×
{
{
VOL-
{
{
×
{
{
×
{
{
CHNG_DEV
×
{
×
×
{
×
×
{
GET_DIRECT
{
{
×
×
×
×
×
×
GET_NUMBER
{
{
×
×
×
×
×
×
GET_ID3
{
{
×
×
×
−
×
×
ABORT
×
×
{
×
×
{
×
×
USB_MNT_READY
○
○
×
○
○
○
○
○
PLAY_DIRECT
{
{
×
×
×
×
×
×
SET_DOUT
{
{
×
{
{
×
{
{
SET_NUMBER
SET_RESUME_
INFO1-7
SET_EQ
{
{
×
×
×
×
×
×
{
{
×
{
{
×
×
×
{
{
×
{
{
×
{
{
SET_VOL
×
×
×
{
{
×
{
{
FFP_ON
×
×
×
{
{
×
×
×
FFP_OFF
×
×
×
{
{
×
×
×
FBP_ON
×
×
×
{
{
×
×
×
FBP_OFF
×
×
×
{
{
×
×
×
SEL 12MOUT
{
{
×
{
{
×
{
{
SET_DIRECT
{
{
×
×
×
×
×
×
SET_WDT
{
{
×
{
{
×
{
{
SET_RPM
{
{
×
{
{
×
×
×
SET_UPLOAD_FILE1
SET_UPLOAD_FILE2
After recognizing the USB memory, only the halt condition is the command effective.
UPLOAD_END
SET_TOUT_M
○
○
×
○
○
×
○
○
SET_TOUT_C
○
○
×
○
○
×
○
○
SET_USB_RWAIT
○
○
×
○
○
×
○
○
GET_VENDOR
FORCE_DISCON_US
B
FORCE_CON_USB
○
○
×
○
○
×
○
○
○
○
×
○
○
○
×
×
×
×
×
×
×
×
○
○
FORCE_DISCON_SD
×
×
×
×
×
×
○
○
FORCE_CON_SD
×
×
×
×
×
×
○
○
SET_LUN
○
○
×
○
○
×
○
○
RESET_LUN
○
○
×
○
○
×
○
○
{ = Enabled
Confidential
× = Disabled
Target Spec 0.11
BU94601KV Functional Specifications
50/56
VI.4.2 Status output
The LSI outputs the operation information, such as internal status, play time information, folder information, file
information , and ID3Tag information, using the I2C interface.
The statuses as shown in Table VI.4.2.1 MODE3 status register map are output. There are two methods
available: to read a desired number of bytes continuously from the OFFSET position and to read the data by
one command without specifying the OFFSET position. Figure VI.4.2.2 shows the status output commands.
Table VI.4.2.3 shows the enabled/disabled state of the status commands.
The status register has a ring buffer structure of OFFSET 0x00-0x7F. The OFFSET position is automatically
incremented after reading byte data.
Status register outputs a byte data of OFFSET 0x00-0x7F by "Little Endian" format
Table IV.4.2.1 MODE3 Status Output
Offset
Status
bit7
(MSB)
bit6
bit5
bit4
bit3
bit2
bit1
bit0
(LSB)
0x00
STATUS1
ERROR
0: No error
1: Error occurs
SEARCH
0: Search stop
1: Searching
0
0
DEC_ERR
0: No error
1: Error occurs
STOP
0: Not stopped
1. Stopping
PAUSE
0: Not paused
1: Pausing
Play
0: Not played
1: Playing
STATUS2
USBINS
0: USB not
connected
1: USB
connection
detected
STATUS3
BUSY
Command
Busy
0: Not BUSY
1: BUSY
MCHNG
Tune number
change detection
0: Tune
ended/stopped
1: Playing
0
ID3EXIST
TAG information
0: Not exist
1. Exist
STATUS4
ANAEND
0: Analyzing
1: Analysis
completed
FOLINF
Folder
information
0: Absent
1: Present
FOLFULL
Folder buffer
0: Not FULL
1: FULL
FILEINF
Folder information
0: Absent
1: Present
0x04
STATUS5
12MOUT
12 MHz clock
output
0: OFF
1: ON
WDT_RFLG
0:after RESET
0x05
VOLINF
0
0
0x01
0x02
0x03
0x06
EQINF
0x07
PRECOM
0x08
DOUT
Confidential
PDEVUSB
PDEVSD
SDINS
USBFILE
SDFILE
MDEVUSB
MDEVSD
PDEVUSB USB PDEVUSB SD
0: SD not
Playable file within
Playable file
USB memory
SD memory
memory
memory
connected
USB memory
within SD memory
0: Not recognized 0: Not recognized
0: Stopping
0: Stopping
1: SD connection
0: Absent
0: Absent
1: Recognized
1: Recognized 1: Playing/ID3Tag 1: Playing/ID3Tag
detected
1: Present
1: Present
analyzing
analyzing
ID3RSID1
ID3RSID2
ID3Tag Version1 ID3Tag Version2
0: Absent
0: Absent
1: Present
1: Present
0
0
FILEFULL
Folder buffer
0: Not FULL
1: FULL
0
0
0
FBP
Fast backward
playing
0: OFF
1: ON
FFP
Fast forward
playing
0: OFF
1: ON
0
RES_ERR
Resume error
0: No error
1: Error occurs
0
0
0
0
0
DOUT
Audio output
0: LINE output
1: I2S / SPDIF
VOLINF
Sound volume information
[ 4: 0 ]
0
EQINF
Equalizer setting information
0000: OFF
0001: POPS
0010: JAZZ
0011: ROCK
0100: CLASSIC
0101: R&B
1000: BASS BOOST
1001: POPS+BASS
1010: JAZZ+BASS
1011: ROCK+BASS
1100: CLASSIC+BASS
1101: R&B+BASS
1111 BASS BOOST2
0
PRECOM
Previous Command information
0: normal
1: miss
Un Support
HUB
device
Detection Flag
0: Not
Detection Flag
Detection
0: Not Detection
1: Detection
1: Detection
Vendor code
Detection Flag
0: appleNot
Detection
1: appleDetection
0
Target Spec 0.11
0
BU94601KV Functional Specifications
0x09
DOUTINF
DOUTINF
I2S format status
0x58: 32fs(Initial value)
0x59: 48fs
0x5B: 64fs
0x0A
PFOLNL
00h
0x0B
PFOLNH
00h
0x0C
PFILENL
00h
0x0D
PFILENH
00h
0x0E
PSEC
Playing time second information
[7:4]x10 second.
Playing time second information
[3:0]x1second.
0x0F
PMIN
Playing time minute information
[7:4]x10 min.
Playing time minute information
[3:0]x1 min.
0x10
TFOLL
TFOLL
Current folder total folder number lower-order byte
[7:0]
0x11
TFOLH
TFOLH
Current folder total folder number upper-order byte
[15:8]
0x12
TFILEL
TFILEL
Current folder total file number lower-order byte [15:0]
[7:0]
0x13
TFILEH
TFILEH
Current folder total file number upper-order byte [15:0]
[15:8]
0x14
RESFOLL
RESFOLL
Remaining analysis folder number lower-order byte
[7:0]
0x15
RESFOLH
RESFOLH
Remaining analysis folder number upper-order byte
[15:8]
0x16
RESFILEL
RESFILEL
Remaining analysis file number lower-order byte
[7:0]
0x17
RESFILEH
RESFILEH
Remaining analysis file number upper-order byte
[15:8]
0x18
SETFOLL
SETFOLL
Folder acquisition setting value lower-order byte
[7:0]
0x19
SETFOLH
SETFOLH
Folder acquisition setting value upper-order byte
[15:8]
0x1A
SETFILEL
SETFILEL
File acquisition setting value lower-order byte
[7:0]
0x1B
SETFILEH
SETFILEH
File acquisition setting value upper-order byte
[15:8]
0x1C
LANGL
LANGL
Language code information lower -order byte [7:0]
0x1D
LANGH
LANGH
Language code information upper -order byte [15:8]
0x20
|
0x7F
COMAREA
COMAREA
Data common area
The content varies depending on the status read command.
Confidential
Target Spec 0.11
51/56
BU94601KV Functional Specifications
52/56
Table VI. 4.2.2 MODE3 Status Output Commands
Command name
Command
Status output
bytes
Status
1st byte
2nd byte
READ_BUFF
0x5E
OFFSET
Optional
READ_STATUS
0x5F
0x00
5
· This command outputs OFFSET
0x00-0x04 of status buffer.
READ_PLAY_INFO
0x01
6
· This command outputs OFFSET
0x0A-0x0F of status buffer.
READ_VOL
0x02
1
· This command outputs OFFSET 0x05 of
status buffer.
READ_EQ
0x03
1
· This command outputs OFFSET 0x06 of
status buffer.
READ_ID3_TITLE
0x04
64
READ_ID3_ARTIST
0x05
64
READ_ID3_ALBUM
0x06
64
READ_FILE_NAME
0x07
64
READ_FOLDER_NAME
0x08
64
READ_RESUME_INFO
0x09
42
READ_NUMBER
0x0A
4
READ_REST_NUM
0x0B
4
· This command outputs OFFSET
0x14-0x17 of status buffer.
READ_SET_NUM
0x0C
4
READ_FOLDER_INFO
0x0D
76
READ_FILE_INFO
0x0E
76
READ_CLAS
0x0F
4
· This command outputs OFFSET
0x18-0x1B of status buffer.
· This command outputs the result of folder
analysis by "GET_DIRECT" command.
see VI.4.3.
· This command outputs the result of file
analysis by "GET_DIRECT" command.
see VI.4.3.
· This command outputs the data of file
cluster number. Use to check file when
"PLAY_DIRECT".
READ_VERSION
0x10
1
· This command outputs the specified
OFFSET byte data from status buffer.
· This command outputs the data of
ID3Tag Title. *1
· This command outputs the data of
ID3Tag Artist. *1
· This command outputs the data of
ID3Tag Album. *1
· This command outputs the data of
playing MP3 file name. see VI.1.4
· This command outputs the data of
folder name includes playing MP3 file.
see VI.1.4
. Acquire RESUME information in this
command while being playbacking or pausing.
. Set the data acquired in this command as it is
when setting RESUME information by
"SET_RESUME_INFO1-7".
· This command outputs OFFSET
0x10-0x13 of status buffer.
· This command outputs the data of Firmware
version.
·
READ_FILE_SIZE
0x11
4
The size of a specified file of the File Read
function is acquired. It outputs with LittleEndian.
·
When the file doesn't exist, "0xFF, 0xFF, 0xFF,
and 0xFF" is output.
·
The file data of a specified file of the File Read
·
The 92byte data reading is possible by one
·
Four head bytes are file offsets. It outputs with
function is read.
READ_FILE_DATA
0x12
96
time.
LittleEndian.
READ_LUN
READ_LUN_NUM
Confidential
0x17
0x18
1
1
Target Spec 0.11
·
Read LUN of the USB memory specified or
·
Read the total of LUN of the USB memory which is
mounted now.
connected now.
BU94601KV Functional Specifications
READ_SET_LUN
0x19
·
1
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Read LUN specified by the "SET_LUN" command.
In not setting up, 0xFF is read.
*1：BOM(Byte Order Mark) might enter two head bytes according to ID3 data
Table Ⅵ.4.2.3
After
play Searching Error
recognizing Analyzing During
of
device
device
READ_BUFF
{
{
{
{
{
READ_STATUS
{
{
{
{
{
READ_PLAY_INFO
{
×
{
×
{*
READ_VOL
{
×
{
×
{
READ_EQ
{
×
{
×
{
READ_ID3_TITLE
{
×
{
×
×
READ_ID3_ ARTIST
{
×
{
×
×
READ_ID3_ALBUM
{
×
{
×
×
READ_FILE_NAME
{
×
{
×
×
READ_FOLDER_NAME
{
×
{
×
×
READ_RESUME_INFO
READ_NUMBER
{
{
×
×
{
×
×
×
×
×
READ_REST_NUM
{
×
×
×
×
READ_SET_NUM
{
×
×
×
×
READ_FOLDER_INFO
{
{
×
×
×
×
×
×
×
×
READ_FILE_INFO
READ_CLAS
{
×
×
×
×
READ_VERSION
{
×
×
×
×
READ_FILE_SIZE
READ_FILE_DATA
After recognizing the USB memory, only the halt
condition is the command effective.
READ_LUN
○
×
○
×
○
READ_LUN_NUM
○
×
○
×
○
READ_SET_LUN
○
×
○
×
○
{ = Enabled × = Disabled
*”READ_PLAY_INFO” command when an error occurs can be received.
However, status output may not send correct data.
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Target Spec 0.11
BU94601KV Functional Specifications
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VI.4.3 Folder information/File information
For analysis performed by “GET_DIRECT” command, read 76 bytes from the status register “COMAREA
(0x20-0x6B)” using status commands “READ_FOLDER_INFO” and “READ_FILE_INFO”.Each of the status
register structures when “READ_FOLDER_INFO” and “READ_FILE_INFO” are sent is shown below.
(1) Folder information
When the folder is specified using “SET_DIRECT”, the LSI allows you to fetch the folder information in the
specified folder from the memory device at “GET_DIRECT” and read folder information using
“READ_FOLDER_INFO”.
Table VI.4.3.1 shows the status register structure.
Table VI.4.3.1 Folder Information Register Structure
Status
OFFSET
Folder information
0x20-0x25
0x26-0x27
0x28-0x2B
0x2C-0x6B
i.
ii.
iii.
iv.
Access data
:
Reserve
:
Cluster number :
Folder name :
Access data [6 bytes]
Reserve [2 bytes]
Cluster number [4 bytes]
Folder name [64 bytes]
Shows the position where the folder information is written in the memory.
All “0s” are output.
Shows the cluster number where the folder information is written in the memory.
Outputs the folder name from the leftmost position.
(2) File information
When the folder is specified using “SET_DIRECT”, the LSI allows you to fetch the file information in the
specified folder from the memory device at “GET_DIRECT” and read file information using
“READ_FILE_INFO”.
Table VI.4.3.2 shows the status register structure.
Table VI.4.3.2 File Information Register Structure
Status
OFFSET
0x20-0x25
0x26-0x27
0x28-0x2B
0x2C-0x6B
i.
ii.
iii.
iv.
Access data
:
Reserve
:
Cluster number :
File name
:
File information
Access data [6 bytes]
Reserve [2bytes]
Cluster number [4 bytes]
File name [64 bytes]
Shows the position where the file information is written in the memory.
All “0s” are output.
Shows the cluster number where the file information is written in the memory.
Outputs the file name from the leftmost position.
VI. 4.4 Language Code Information
This LSI outputs Language Code Information to Status register. (OFFSET=0x1C and 0x1D)
See Chapter VI. 3.5.
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BU94601KV Functional Specifications
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VI.5 Watchdog Timer
This system builds Watchdog timer(WDT) function.
After RESET, WDT function is enabled on MODE1, MODE2 and MODE3. WDT is enabled always on MODE1.
On MODE2 and MODE3, WDT function can disable by command “SET_WDT”(0x5A,0x00). After WDT function
is disabled, this function cannot enable until a reset from external pin.
When WDT function is enabled and system is hang-up, Watchdog Timer function generates RESET.
When you want to watch RESET of WDT from master micon, write command “SET_WDT”(0x5A,0x01). After
write command “SET_WDT”(0x5A,0x01), status “WDT_RFLG” is “1”.
“WDT_RFLG” is bit6 of STATUS5(offset;x04). This status is “0” after RESET. Therefore, when this status
returned to “0” from “1”, this system generated a reset.
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Target Spec 0.11
BU94601KV Functional Specifications
VII.
Revision history
Revision No.
Date
Revised by
Target0.01
Target0.08
Target0.10
Target0.11
2010/05/10
2010/10/26
2010/11/22
2010/12/29
O.O.
M.H
M.H
M.H
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Revising points
Initial release
Error correction, Command addition
Command addition
Correction of Terminal layout drawing
Target Spec 0.11
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