BU9458KV Application Note Rev. 0.02
PROPRIETARY AND CONFIDENTIAL
-
8/42-
2009/05/28
1
2
3
4
5
6
A
B
C
D
6
5
4
3
2
1
D
C
B
A
R1
0
12k
(F
ra
n
k)
3.3V
3.3V
3.3V
BU9436KV_MODE1
C11
0.1
3.3V
C6 0.1
C7
0.1
X1
16.
93
4
4M
H
Z
R11
1M
R1
2
10
0
C8
5p
C9
5p
3.3V
C10
10u
3.3V
C16
0.1
C17
0.1
C2 0.
1
C3
0.
1
C4
0.
1
SW2
PLAY
SW4
FF
SW1
FB
SW3
STOP
SW8
FOL+
SW9
+10
SW6
VOL+
SW7
FOL-
SW5
VOL-
SW11
RANDOM
SW12
CHG_DEV
SW10
REPEAT
LE
D3
PSD
LE
D2
Pl
ay
LED
1
ER
R
O
R
R1
7
220
R1
6
220
R1
5
220
3.3V
LE
D6
R
and
om
LE
D5
AC
C
E
SS
LE
D4
PUS
B
R2
0
22
0
R1
9
220
R1
8
22
0
LE
D7
Re
pe
at
R2
1
220
C2
3
1u
F
C2
4
0.
1
VBUS
1
DP
3
DM
2
GND
4
CN1
USB XM7A-0442
C1
2
560
p
C1
3
560
p
R13 2.2K
R14 2.2k
C14 4.7/50V
C15
4.7/50V
J2
LINE_JACK
Q1
DTC114TUA
Q2
DTC114TUA
Q3
DTA124EUA
3.3V
3.3V
R
8
100
k
R
7
100
k
R6
0
R5
100
k
3.3V
KE
Y
_R
O
W
4
13
RE
SE
T
X
1
KE
Y
_C
O
L
1
14
KE
Y
_C
O
L
2
15
KE
Y
_C
O
L
3
16
T EST3 17
DVDDIO 18
SD_CON 19
SD_DO 20
SD_CLK 21
SD_DI 22
US
B
_
DM
33
SD_CS 23
DVSS 24
T EST4 25
T EST5 26
DVDD 27
T EST6 28
T EST7 29
T EST8 30
ATEST 1 31
AVDDC 32
US
B
_
D
P
34
AVS
S
C
35
RE
X
T
I
36
VOR
EF
I
37
VDD_
P
L
L
38
TES
T
_
P
L
L
39
XI
N
_
P
L
L
40
XO
UT
_P
LL
41
V
SS_
PL
L
42
DAVS
S
43
R
DAC
O
44
SE
L
_
SL
A
V
E
2
SE
L
_
M
P
3
3
S
E
L_
DOU
T
4
S
E
L_
VOL
5
S
E
L_
AP
LAY
6
TE
S
T
1
8
TE
S
T
2
9
SE
L
_
U
T
PK
T
7
KE
Y
_R
O
W
1
10
KE
Y
_R
O
W
2
11
KE
Y
_R
O
W
3
12
VC
DAC
O
45
LDAC
O
46
AM
UTE
48
DAVD
D
47
LED_ERROR
49
LED_PLAY
50
LED_PSD
51
LED_PUSB
52
LED_ACCESS
53
LED_RANDOM
54
LED_REPEAT
55
T EST13
56
DVDD
57
T EST14
58
T EST15
59
T EST16
60
T EST17
61
DVSS
62
T MODE
63
DVDDIO
64
IC1
BU9436KV
GND 1
IN 2
IN 3
EN 4
OC
5
OUT
7
OUT
8
OUT
6
IC3
BD2051AFJ
R4
100
k
R
3
100
k
CS
1
DI
2
VSS1
3
VDD
4
SCLK
5
VSS2
6
DO
7
RSV
8
RSV
9
WRITE
11 CARD-IN
10
12
13
14
15
CN2
SD
R2
100
k
ER
1
SU
B
2
GN
D
3
VOU
T
4
VDD
5
IC
2
B
D
4527
5G
R1
100
k
3.3V
FM
high side switch
C
5
10u
F
L1
1uH
R9 2.2
C3
1
10u
Analog audio input type
BH14xx series
Wireless audio link
application circuit example（MODE1）
De sc rip ti on
St an d a lo ne
MP 1 MP 2 MP 3
An al og au dio ou tp ut
Au di o v ol ume va li d
Au to Pl ay OF F
Te rm ina l Setting
2
3
4
5
H
L
H
H
H
6
7
H
No rm al Op era tio n
C1
4
100
u
TP9
5V
TP10
GND
C2
1
0.
33
C2
0
22
u
F
VIN
1
GND
2
STBY
3
VOUT 4
NC 5
IC2
BH33NB1WHFV
LDO Regulator
1
2
3
4
5
6
RS
B
1
RS
B1
2J
S2
/PAUSE
1
2
3
4
5
6
A
B
C
D
6
5
4
3
2
1
D
C
B
A
R1
0
12
k(
F
r
ank
)
3.3V
3.3V
BU9436KV_MODE2/3
C9
0.1
3.3V
C4 0.1
C5
0.1
C1
4
100
u
X1 16
.934
4M
H
Z
R11
1M
R1
2
100
C6
5p
C7
5p
3.3V
C8
10u
3.3V
C10
0.1
C11
0.1
T
P
1
R
ES
ET
X
C1
0.
1
C3
0.
1
C1
2
0.
1
C1
5
1uF
C1
6
0.
1
L1
1uH
R13
2.2
C2
2
0.
1u
VBUS
1
DP
3
DM
2
GND
4
CN1
USB XM7A-0442
High side switch
R8
10
0k
R7
10
0
k
R3
10
0
k
R6
10
0
k
3.3V
SD
A
13
RE
SE
T
X
1
A0
14
A1
15
SE
L
_
SM
A
N
16
TEST3 17
DVDDIO 18
SD_CON 19
SD_DO 20
SD_CLK 21
SD_DI 22
US
B
_D
M
33
SD_CS 23
DVSS 24
TEST4 25
CLKTOUT 12 26
DVDD 27
TEST6 28
TEST7 29
TEST8 30
ATEST 1 31
AVDDC 32
US
B
_DP
34
AVS
SC
35
RE
X
T
I
36
VO
R
E
F
I
37
VD
D_
P
L
L
38
TE
S
T
_P
LL
39
XI
N
_P
L
L
40
XOU
T
_P
L
L
41
VS
S
_P
L
L
42
DA
VS
S
43
RD
A
C
O
44
S
E
L_
SL
AVE
2
SE
L
_
M
P
3
3
S
E
L_
DOU
T
4
S
E
L_
VOL
5
SE
L
_
A
PL
A
Y
6
TES
T1
8
TES
T2
9
SE
L
_
U
T
PK
T
7
M
C
HNG
10
BU
SY
11
SC
L
12
VC
DA
C
O
45
LD
AC
O
46
AM
UT
E
48
DA
VDD
47
T EST9
49
T EST10
50
T EST11
51
T EST12
52
LRCK/SPDIF
53
BCK
54
DAT A
55
T EST13
56
DVDD
57
T EST14
58
T EST15
59
T EST16
60
T EST17
61
DVSS
62
T MODE
63
DVDDIO
64
IC1
BU9436KV
TP
4
SC
L
TP
5
SDA
TP
3
BU
S
Y
TP7 BCK
TP8 DATA
TP6 LRCK
TP
2
M
U
C
H
N
G
to MCU
R2 2.2k
R1 2.2k
GND 1
IN 2
IN 3
EN 4
OC
5
OUT
7
OUT
8
OUT
6
IC4
BD2051AFJ
Digital audio input type
BU268x series
R5
10
0
k
R4
10
0k
CS
1
DI
2
VSS1
3
VDD
4
SCLK
5
VSS2
6
DO
7
RSV
8
RSV
9
WRITE
11 CARD-IN
10
12
13
14
15
CN2
SD
TP9
5V
TP10
GND
C2
1
0.
33
C2
0
22
u
3.3V
application circuit example（SLAVE）
De sc rip ti on
Sl av e
MP 1 MP 2 MP 3
Di gi tal a udi o o ut pou t
Au di o v ol ume va li d
Au to Pl ay OF F
Te rm ina l No Se tt ing
2
3
4
5
L
L
H
H
L
6
7
H
No rm al Op era tio n
14
15
H
H
A0 I2C sl ave a ddr ess
A1 I2C sl ave a ddr ess
VIN
1
GND
2
STBY
3
VOUT 4
NC 5
IC2
BH33NB1WHFV
Wireless audio link
FM
Fol der Na me
Pla yback time
Fil e Name
LDO Regulators
C1
3
10
R9
0
16
H
MO DE 2
ID3 TAG
3.3V
1
2
3
4
5
6
RSB1
RSB12JS2
L
MO DE 3
Figure IV.1 an example of connection circuit application in MODE1.
Figure IV.2 an example of connection circuit application in MODE2/MODE3.
Though all application circuit examples can be recommended in faith, confirm them fully before using them.
To use external devices beyond a predetermined quantity, make decision with an adequate allowance, considering differences
between the external devices and our ICs including the transient properties as well as static properties.
BU9458KV
BU9458KV_MODE1
BU9458KV
BU9458KV_MODE2/3
