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1
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ESP32-Audi o-Kit
* V1.0
2018/8/27 14:53:59
E:\
文档\安信可\项目\ESP32音频板\音频底板\V1.2\ESP32-Audio-Kit_V2.1-open.SchDoc
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Sheet ofTime:
A2
C?
R?
R?
SPORP
SPORN
SPOLN
SPOLP
PGND
R?
R?
R?
ShutDown
C?
GND
RST
VDD3V3
SPORP
SPORN
SPOLN
SPOLP
HBIAS
TXD0
RXD0
MIC1P
MIC1N
LINN
LINP
RINP
RINN
LOP
LON
RON
ROP
GND
GND
C?
GND
MBIAS
C?
C?
C?
C?
C?
C?
LINEINL
LINEINR
HPOUTR
HPOUTL
IO0
IO23
IO2
IO4
IO5IO15
IO13 IO18
IO19
KEY_AD
MGND
MIC
MIC?
C?
C?
C?
MIC1P
MIC1N
R?
C?
C?
M1P
M1N
R?
R?
R?
MBIAS
C?
SD
MIC?
C?
C?
C?
MIC2P
MIC2N
R?
C?
C?
M2P
M2N
R?
R?
R?
C?
MIC2P
MIC2N
GND
DATA2
1
CD/DATA3
2
CMD
3
VDD
4
CLK
5
VSS
6
DATA0
7
DATA1
8
SD
9
PAD
10
PAD
11
PAD
12
PAD
13
Micro SD
TF
SD?
SD_DATA2
SD_DATA3
SD_CLK
GND
SD_DATA0
SD_DATA1
R?R?R?R?R?
VDD3V3
IO2
IO4
IO15
IO13
IO12
IO14
GND
1
3V3
2
GND
19
SENSOR_VN
3
SENSOR_VP
4
IO34
5
IO0
6
IO14
7
IO12
8
IO13
9
IO15
10
IO2
11
IO4
12
HBIAS
13
MIC2N
14
MIC2P
15
MBIAS
16
MIC1P
17
MIC1N
18
GND
20
LINEINR
21
LINEINL
22
SPORP
23
SPORN
24
SPOLP
25
SPOLN
26
HPOUTL
27
HPOUTR
28
IO5
29
IO18
30
IO23
31
IO19
32
IO22
33
IO21
34
EN
35
TXD0
36
RXD0
37
GND
38
GND
39
M?
IO14
IO12
C?
GND
SD_DATA2
SD_DATA3
SD_CMD
SD_CLK
SD_DATA0
SD_DATA1
GND
HBIAS
HPOUTR
HPOUTL
C?
R?
C?
R?
AGNDAGND
R?
R? HPOR
HPOL
AMP
EARPHONES
LINEINL
LINEINR
C?
C?
LINEIN
R?
INL
INR
VDD3V3
C?
GND
1
6
4
5
3
2
J?
CTRL
1
Bypass
2
InP
3
InN
4
VoN
5
VCC
6
GND
7
VoP
8
U?
CTRL
1
Bypass
2
InP
3
InN
4
VoN
5
VCC
6
GND
7
VoP
8
U?
PGND
C?
PGND
PGND
PGND
PGND
C?
PGND
C?
C?
PGND
PGND
CTRL
CTRL
C?
PGND
PGND
C?
INL
INR
1
6
4
5
3
2
J?
HPOR
HPOL
HP_Detect
SD_Detect
AGND
AGND
AGND
R?
VDD3V3
R?
R?
R?
R?
R?
R?
R?
R?
R?
R?
HP_Detect
SD_Detect
R?
IO34
1
2
J?
1
2
J?
R?
R?
IO34
IO36
IO39
IO22
R?
R?
R?
R?
R?
R?
R?
R?
R?
R?
IO5
IO18
R?
R?
R?
R?
R?
K?
K?
K?
K?
K?
K?
GND
KEY_AD
R?
VDD3V3
R?
IO13
IO14
IO2
IO4
IO23
IO19
KEYS
MODULE
R?
C?
IO36
GND
VDD3V3
C?
PGND
C?
PGND
C?
PGND
C?
PGND
VDD5V
VDD5V
VDD5V
VDD5V
C?
C?
C?
C?
GND
PGND
R?
GND
Ai-Thinker ESP32-Audio-Kit
V2.1
Jony
3/3
SD_CMD
IO39
IO12
AGND
R?
GND
IO21 ShutDown
IO12
IO21
CMD
OUT
1
GND
2
GND
3
VDD
4
MIC?
MBIAS
C?
MIC1P
OUT
1
GND
2
GND
3
VDD
4
MIC?
C?
MIC2P
C?
MIC1N
C?
MIC2N
C? C? C?
C? C? C?
KEY1
KEY2
KEY3
KEY4
KEY5
KEY6
KEY1 KEY2 KEY3
KEY4 KEY5 KEY6
GND
GND
HBIAS
R?
MGNDGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
DCD
1
RI
2
GND
3
D+
4
D-
5
VDD
6
REGIN
7
VBUS
8
RST
9
NC
10
SUSPEND
11
SUSPEND
12
NC
13
NC
14
NC
15
NC
16
NC
17
NC
18
NC
19
NC
20
NC
21
NC
22
CTS
23
RTS
24
RXD
25
TXD
26
DSR
27
DTR
28
GND
29
U?
R?
C?
TXD0
C?
D_P
D_N
RXD0
F?
DTR
RTS
R?
CTS
DSR
R?
R?
IO0
DTR
RTS
Q?
Q?
D-
2
D+
3
ID
4
GND
5
MH1
6
MH2
7
VBUS
1
USB?
IO0
R?
Q?
IO2
DTR
RTS
R?
Q?
R?
IO2
Q?
VDD3V3
RST
K?
K?
RST
C?
C?
C?
R?
R?
VIN
4
GND
2
EN
1
FB
5
LX
3
U?
L?
Vo=(Ra/Rb+1)*0.6V=(510k/110k+1)*0.6V=3.38V
C?
VCC3V3
VBAT
TEMP
1
PROG
2
GND
3
VCC
4
BAT
5
STDBY
6
CHRG
7
CE
8
GND
9
U?
LED?
R?
LED?
R?
R?
BT?
VBUS
VDD5V
C?
D-
2
D+
3
ID
4
GND
5
MH1
6
MH2
7
VBUS
1
USB?
Q?
R?
VCC5V
R?
C?
LED?
R?
D?
L?
L?
VDD3V3
C?
VCC5V
VCC5V
IO22
LED?
R?
VDD3V3
VCC3V3
VCC3V3
VBUS
VBUS
POWER
1
2
3
4
P?
JT_MTCK
JT_MTDO
JT_MTMS
R?
1
2
3
4
5
6
P?
TXD0
RXD0
RST
IO0
1
2
3
4
5
6
P?
IO23
IO5
IO18
IO19
IO22
IO15
IO13
IO14
1
2
3
JP?
JT_MTCK
IO12
SD_DATA3
JT_MTDI
IO13
IO15
1
2
3
JP?
JT_MTDO
SD_CMD
IO14
JT_MTCK
JT_MTDO
IO
IO21
IO12
VDD3V3
Ai-Thinker ESP32-Audio-kit