Data Sheet

W901
1
VCC
+5V
R13
4K7
AM_R
AM_L
R
L
MUTE
DAB_EN
VCC
R
L
VDD
!
D
M_R
D
D
D
D
RESET
VR_L
D
D
M_L-1
AM_L
C271
102
D
VR_R
C267
105
D
MUTE
R205
910F
R243
100K
D
D
R208 2K7F
104
C225
D
D
VOL_R
2
VCC
C16
104
1V2
3V3
RBW
C302 223
RFGND
C304 223
C33
47/16
C34
104
VCC
+5V
C29
331
C4
100/16
3V3
R46 10
HWS_BUZZER
12KFR11
C58
104
3V3
103C11
103C12
VDD
390
R230
DAB_RX
D
D
220/6V3C231
0
D
102C259
M_L
NC
VDD
10KF
R273
D
C233 220/6V3
D
R262 47K
MUTE
D
225K
C251
C244 104
RST
+5V
D
R270
47K
D
+5V
C272 *102
BU_VOL
225K
C252
+5V
R287 220K
R235
100K
L
R
D
D
VOL_L
C228 225K
D
3V3
0
R266
104K
C249
10K
R258
+5V
SELECT
D
104C21
C307 223
R22
4K7
C306 223
10K
R36
100/10C42
VCC
R246
47K
ADC_KEY1
ADC_KEY0
C222
104
BD203
1K
AC_IN
LOCK_DET LOCK_DET
R292 1K
1KR284
1KR298
C242 47/10
R288
1K
C219
104
R213
680F
472
C237
C212 471
471C214
R216 1K8F
C30
104
C18
104
C9
100/25
2
W
R
C31
104
C23
104
R28
10KF
VCC
DAB_EN
POWER_EN
100K
R7
R35
1K
C60
10/16
R
470F
R8
C7
105
4R7
R4
VR_R
VR_L
I2C_CLK
SI4730_INT
KEYTONE
BUZZER_EN
L
AC_IN
BD1
1K
R14
22
VR_R
VR_L
SI4730_INT
AM_R
AM_L
MUTE
KEYTONE
BUZZER_EN
DAB_EN
1V2 3V3
D
AC_IN
VCC
CE 4K7F 10KF
R274,275 R272,273
D D
VDD
DAB_EN
D
BUZZER_EN
MUX
I2C_DATA
UART_RX
UART_TX
D D
SI4730_INT
I2C_CLK
100KR221
D D
AC_DET
104
C217
BATT_LEVEL
1K
BD204
R279
100K
D
C270
102
ADC_KEY0
M_R-1
R269
47K
TUNE_UP
D
D
PWM_DIMMER
BUZZER
LCD_CS
LCD_DATA
LCD_CLK
D
R203
560F
105
C229
C220
222
C221
222
R244
100K
D
D
470R219
R206 1K2F
0
R245
D D
R238
0
SELECT
LCD_CS-1
LCD_SCL
D
R209 4K7F
C266
47/10
R286
1K
1MF
R211
DAB_3V3
R21
*
C13
220/6V3
C10 104
W3
TO SPK GND
1
2 1
W302
TO BATTERY
T
A B
JK301:A
ACJACK
PLUG AC CORD 230/240V
C22
220/6V3
33K 1%
R18
R33
1K
C32
225K
20K 1%
R19
330
R20
+5V
C19
104
1000/25
C14
AC_IN
W303
2
1
3
TO W1
W301
100K
R301
D301
1N4002
C301
10/50
R302
33K
D302 1N5819
D303 1N5819
C303
3300/25
T301
1720160
R24
22
Q2
2SC1623
Q4
2SC1623
100/16
C8
2SJ621
Q1
C46
102
R49 1K R51 1K
I2C_DATA
I2C_CLK
C28
225K
C35
225K
R29
10KF
18KF
R27
33K
R31
R10
10K
4K7
R6
KEYTONE
C1
22/16
100/16
C6
C38
105
C2
1000/16
GND
D-
D+
VCC
JK600
1649283
C52
154K
R56
2K2
8
6
7
5
VR1:2
20KA
1
3
4
2
VR1:1
20KA
SI4730_ RST
I2C_DATA
HWS_BUZZER
POWER_EN
DAB_3V3
3V3
BD2
1K
22
R17
+5V
R30
470
1000/16
C3
C37
105
Q6
2SC1623
4 2 1 3
W203
(CN600)
D
102
C257
D
SI4730_ RST
+5V
HWS_BUZZER
POWER_EN
D D
DAB_3V3
D201
1SS367
VDD
D
RESET
AUS
*102
C273
C256 102
104C236
1K
R296
1V2
AC_IN
D
102C261
ALARM_LED
BD206
1K
104
C262
I2C_CLK
D
C211
104
VDD
D
104
C204
R223
100K
C254
225K
10KF
R272
C232 104
C255 102
VDD
DAB_3V3
47K
R247
D
MUTE
D D
POWER_EN
102
C263
102
C264
BD205
1K
VDD
VDD
UART_5V
BD200
1K
ADC_KEY_INT
C200
220/6V3
C243 47/10
R259
47K
R263
47K
D
D
C203
102
X200
4.0MHz
ADC_KEY1
MUX
1K
R293
AM_R
C241
104
R264
47K
47K
R268
D
MUTE
R295
1K
DAB_TX
KEYTONE
R233
100K
Q203
2SC1623
100K
R239
VDD
VDD
R202 4K7F
4K7F R201
ADC_KEY_INT
POWER
S200
105
C268
R271
0
104K
C247
C248
472K
154K
C245
R265
120K
10K
R257
Q207
2SC1623
+5V
154K
C239
C234
105K
Q211
DTC144EN3
R280
47K
220/6V3
C224
D
R241
100K
C216
105
R242
100K
C215
104
D
22K
R234
18K
R232
560K
R285
R231
4K7
R222
470
R220 470
S209
AUTOTUNE
S202
PRESET4
S208
INFO
S201
PRESET5
S210
BAND
S203
PRESET3
+5V
R289 220K
C246
154K
2K2
R261
Q214
2SC1623
154K
C240
2K2
R253
C230
105
C227
47/10
+5V
C223
220/6V3
ADC_KEY_INT
R229
18
47K
R225
104
C210
LCD_SDA
C209
104
BD201
1K
S212
SLEEP
S205
PRESET1
S213
DIMMER
S206
ALARM
R16
100
6 5
JK301:B
ACJACK
W2
MODULE GND
C39
220/6V3
C24
225K
18KF
R26
4
VADJ
5
GND
2
VDIS
3
VOUT
1
VIN
SA78RL00D
IC2
D306 1N5819
D305 1N5819
2
1
3
W1
TO W301
4
CE
5
VOUT
2
VSS
3
NC
1
VIN
XC6216B502MR
IC4
104
C53
5 7 6
4
V-
2 3 1 8
V+
IC5
UTCM2115
8
FMI
6
NC
4
CPO2/ INT
2
DFS
13
GND
14
GND
15
RST
17
SCLK
19
RCLK
21
VDD
23
ROUT
9
RFGND
1
DOUT
3
GPO3/DCLK
5
GPO1
7
NC
16
SEN
18
SDIO
20
VIO
22
GND
24
LOUT
12
AMI
11
NC
10
NC
SI4731-D60-GU
IC7
R1
270K
4K7
R5
R2
2K2
C47 471
C45 104
C43
10/6V3
R3
1K8
474
C5
Q8
DTA143ZN3
1SS357
D1
C36 103
+5V
1V2
5 4 2 1 3
W202
(CN4)
5 4 2 1 3
(CN3)
W201
103C265
D
3V3
R281
1K
BD202
1K
R236
1M2F
225K
C253
R291
1K
Q205
DTC144EN3
Q206
DTC144EN3
47K
R256
1KR228
102
C269
1KR283
1KR297
22pC206
C207
22p
SW200
LOCK
32.768KHz
X201
R254
22
C218
104
R276
100K
R249
100K
1
3
2
VR201:A
20K
471C213
VDD VDD
10K
R237
R214
910F
R290
1K
4
6
5
VR200:B
20K
R217 2K7F
5 4 2 1 3
CN203
(W500)
5 4 2 1 3
W500
(CN203)
5 6 4 2 1 3
CN202
Program
17 18 15 16 14 12 10
8 6 4 2
13
5 7 9
11
1 3
W200
(CN1)
C40
22P
C41
22P
SI4730_INT
DAB_TX
C26 104
51KF
R12
I2C_DATA
R274 4K7F
R240
1MF
1KR294 1KR277
C205 22p
R200
470K
R204
680F
1K
R299
C226
100/10
R207 1K8F
R210 11KF
AMBAR
PCB-A
SI4730_INT
4M7R42
OUTIN
GND
XC6202P332PRN
IC3
X1
32.768KHz
C15
104
R34
47K
R32
47K
DAB_3V3
D7
1N5817
VCC
D6
1N5817
102
C59
C20
47/16
D304
1N5819
4 2 1 3
TO W203
CN600
154K
C51
2K2
R55
C25 47/16
Q7
DTC343TK
R9
10K
C260
102
R15
4K7
2SC1623
Q3
ALARM
LED200
P2
C2 U2
P1
C1 U1
T
TS
RS
R
G
JK1
1640060
C17
105
R25
10K
SP1
R275 4K7F
2K2
R260
Q209
DTC144EN3
Q213
2SC1623
2K2
R252
+5V
C258
102
HWS_BUZZER
TUNE_DOWN
1KR278
Q201
2SC1623
1KR227 1KR226
C201
104
C202
22p
S214
RESET
C250
472K
Q208
2SC1623
R267
120K
472
C238
C235
105K
R250
2K2
R251
2K2
R248
22
2SC1623
Q212
Q202
2SC1623
S211
NAP
S204
PRESET2
S207
PRESET
C27
331
1618540
VOUTVIN
VSS
S1206B12
IC6
C305
*
5M6
R303
PCB-B
5 4 2 1 3
TO W202
CN4
PCB-E
5 4 2 1 3
CN3
TO W201
3M9
R23
Q5
DTC144EN3
Q204
DTC143ZN3
R255
47K
1
3
2
20K
VR200:A
29
USB_DP
25
ADC0
21
GPIO_25
17
SOUT
13
SPI_CS2_N
9
SPI_RXD
5
AUD_R
7
SPI_CLK
3
AUD_L
30
USB_0V
26
ADC1
22
DG
18
GPIO_5
14
DG
10
SPI_TXD
6
AGND
8
SPI_CS0_N
4
DG
15
SIN
19
GPIO_2
23
GPIO_0
27
USB_VBUS
1
1V2
11
GPIO_16
28
USB_DN
24
GPIO_3
20
GPIO_24
16
GPIO_6
2
3V3
12
POR_N
MD200
FS-2052
8
VSS
9
B
6
INH
11
X3
4
Y3
13
X
2
Y2
15
X2
1
Y0
16
VDD
5
Y1
7
VEE
3
Y
10
A
12
X0
14
X1
IC205
UTC4052L-S16R
Q200
2SA812
R282
1K
R212
560F
100K
R224
44
PB7
42
PB5
40
P73
38
P71
36
P81
34
P91
12
P20
14
P22
16
P24
18
P26
20
VAREF/AVDD
22
P41
11
P13
9
P11
10
P12
8
RST
6
XTIN
4
MODE
2
XIN
41
PB4
43
PB6
23
P42
25
P44
24
P43
26
P45
28
P47
30
P75
32
P77
35
P80
37
P70
39
P72
13
P21
15
P23
7
XTOUT
5
VDD
3
XOUT
1
VSS
17
P25
19
P27
21
P40
27
P46
29
P74
31
P76
33
P90
IC202
TMP89FM42LUG
7
OUT2
3
IN1
6
BIAS
1
OUT1
8
VCC
4
GND
5
IN2
2
MUTE
IC204
UTC3544
4
6
5
VR201:B
20K
R215 1K2F
R218 4K7F
9 7 8 5 6 4 2 1 3
CN201
LCM
PCB-D
EN500
17 18 15 16 14 12 10
8 6 4 2
13
5 7 9
11
1 3
TO W200
CN1
4
VSS
2
A1
7
MP
3
A2
1
A0
5
SDA
6
SCL
8
VDD
AT24C02BN
IC203
1618550
PCB-C
2
OUT2
9
GND
5
GND
8
SVR
11
FFEDBAC
6
EEDBACK
13
GND
4
GND
15
OUT1
16
+VS
14
BOOT1
12
GND
10
IN1+
7
IN2+
3
BOOT2
1
BRIDGE
UTC2025IC1
ALL SCHEMATIC DIAGRAM
32