1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
ADKEY
、
SD Power
、
USB
MCU
MIC
、
PA
、
Earphone
，
LINEIN
R309
100R
R310
100R
LPF_L
LPF_R
C313
10uF
C312
10uF
DACL
DACR
PHIN
J601
5V DC
D602
1N5822
SW601
SW-DIP
BT601
3.4V~4.2V
V_BAT
R603
2R7
VMCU+5V
注：原理图中注释说明设计时需特别注意
ROUT-
ROUT+
LOUT-
LOUT+
C301
105
LOUT-
LOUT+
ROUT-
ROUT+
C309
104
C308
220uF/6.3V
VMCU
MUTE
R305 68K R306 68K
R302
15K
R304
15K
C303
104
C302
104
R303
15K
VMCU
C306
NC
C307
NC
R301
NC/3.3K
R502
330R/NC
1
2
J502 BL
背光
Q501
9014C/NC
R501
3K/NC
BL_LIGHT
R503
NC
BL_LIGHT
R504
NC
VMCU
2
4
3
1
J301
Phone Jack
DACL DACR
备注：电源入口或功放处为GND，AGND 连接点
+
M201
MIC
R201
1K
C205
102
C204
104
MIC
R206
2.2K
C203
105
DACVDD
CD
10
D2
9
D3/CS
1
CMD/DI
2
VDD
4
CLK
5
VSS
6
D0/DO
7
D1
8
VSS
3
WP
11
SHEET
12
SD401
SD
R412
4.7R
C403
NC/105
SD_CMD
SD_DAT
+3.3V
SD_CLK
R413
3.3K
C305
224
C304 224
R307 10K
R308
10K
AUXL
AUXR
LIN_L
LIN_R
LINEIN
2
4
3
1
J302
LINEIN Jack
C310
NC/202
C311
NC/202
LED
、
LCD
、
IR
R311 2K
C501
105
C502
105
LCD_DATA
LCD_RES
LCD_A0
LCD_CLK
LCD_CS
CAP1P
1
CAP1N
2
CAP2P
3
CAP2N
4
VSS
5
VDD
6
DATA
7
CLK
8
A0
9
RES
10
CS
11
LCD501
LCD128*32-11P
C503
105
+3.3V
LCD_DATA，LCD_C LK为固定连接
C/S
5
C/S
4
C/S
1
C/S
3
C/S
6
C/S
7
C/S
2
USB
SD
FM
MP3
II
J501
LED-4_8S-7P
C/S1
C/S2
C/S3
C/S4
C/S5
C/S6
C/S7
USBDP
USBDM
USB5V
+5V
1
DM
2
DP
3
GND
4
65
USB601
USB
VOUT
1
GND
2
EN
3
C-
4
VIN
5
C+
6
U6
NC/LP3211S
C601
NC/105
C602
NC/225
C603
10uF
R601
1R/NC
VMCU
IR
1
GND
2
VCC
3
U501 IR
IRDA
DACVDD
红外接收头供电接PI N1 5脚DACVDD
C504
105
C402
NC/100P
R401
22K 1%
R411
220K 1%
R410
100K 1%
R409
51K 1%
R408
33K 1%
R407
24K 1%
R406
15K 1%
R405
9.1K 1%
R404
6.2K 1%
R403
3K 1%
S401
V-
S402
V+
S403
PREV/V-/CH-
S404
NEXT/V+/CH+
S405
PREV/CH-
S406
NEXT/CH+
S407
P/P,FM_Scan
S408
Mode
S409
TALK
S410
NC
0V 0.4V 0.7V 1V 1.3V 1.7V 2.0V 2.3V 2.7V 3.0V
R402
0R
AD_KEY
备注：
AC4601_48PIN
可支持无屏，点阵屏，
7
脚数码管，段码屏等方 案
J303
RSPK
J304
LSPK
C111
105
C109
105
C110
105
VCOM
DACVDD
DACR
USBDP
USBDM
+3.3V
L102
0R
C101
2.7P
L101
NC
AVDD28
C104
105
AVDD33
C107
105
GND
C108
105
C106
105
PLLAVDD
L103
100nH
C112
33pF
C113
10P
FM_ANT
FMIP
AGND
C102
20P
C103
20P
BTOSCO BTOSCI
BTOSCO
BTOSCI
GND
VMCU
MIC SD_CMD
SD_CLK
SD_DAT
GND
+3.3V
BT_RF
FM_ANT
DACL
AUXL
AUXR
IRDA
C/S1
C/S2
C/S3
C/S4
C/S5
C/S6
C/S7
BT_ANT
Y101
24M
LCD_DATA
LCD_RES
LCD_A0
LCD_CLK
LCD_CS
PHIN
LINEIN
MUTE
BL_LIGHT
SD_DET
+3.3V
AD_KEY
SD
1
GND
2
VOLP
3
VDD
4
VOLN
5
INLN
6
GND
7
NC
8
BYPASS
9
AB/D
10
INRN
11
VORN
12
VDD
13
VORP
14
GND
15
HP-IN
16
U301
NS4250
AB/D
AB/D
+3.3V
晶振选型：
封装：可兼容
32 25 ，M49S，HC49 S等不同封装
要求：稳定性、一致性要好，频偏偏差：
±10PPM以内
电容：电容
C102和C103的大小根据所选晶振内部负载
电容的大小决定，以实际测试为准。
AVSS
1
BT_RF
2
AVDD28
3
AVSS
4
AVDD33
5
LDO_IN
6
LDOVSS
7
PLLAVDD
8
PLLAVSS
9
FMIP
10
FMVSS
12
DACVSS
13
VCOM
14
DACVDD
15
DACL
16
DACR
17
PC15
18
PC13
19
PC12
20
PC11
21
PC10
22
USBDM
23
USBDP
24
PB10
25
PB9
26
PB8
27
PB7
28
PB6
29
VSSIO
30
VDDIO
31
PA15
32
PA14
33
PA11
34
PA10
35
PA9
36
PA8
37
PA7
38
PA6
39
PA5
40
PA4
41
PA2
43
PA1
44
PA0
45
BT_OSCI
46
BT_OSCO
47
PA3
42
AVSS
48
FMIN
11
U101
AC4601_LQFP48
COM0
1
COM1
2
COM2
3
S0
4
S1
5
S2
6
S3
7
S4
8
S5
9
S6
10
S7
11
S8
12
LCD502
LCD_SEGMENT3*9
LCD_COM2
LCD_COM1
LCD_COM3
LCD_S0
LCD_S1
LCD_S2
LCD_S3
LCD_S4
LCD_S5
LCD_S6
LCD_S7
LCD_S8
LCD_COM2
LCD_COM1
LCD_COM3
LCD_S0
LCD_S1
LCD_S2
LCD_S3
LCD_S4
LCD_S5
LCD_S6
LCD_S7
GND
AGND
GND
AB/D和MUTE根据选用屏的方案，
可以换用其他
IO
