1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2019/ 4 / 9 Sheet of
File: C:\Users\ ..\E SP32 -Au d i o -Ki t _ V 2 .2-Au di o .SchDocDrawn By:
C38
R48
R47
SPORP
SPORN
SPOLN
SPOLP
PGND
R50
R49
R51
ShutDown
C49
GND
RST
VDD3V3
SPORP
SPORN
SPOLN
SPOLP
HBIAS
TXD0
RXD0
MIC1P
MIC1N
LINN
LINP
RINP
RINN
LOP
LON
RON
ROP
GND
GND
C15
GND
MBIAS
C48
C50
C52
C37
C39
C40
LINEINL
LINEINR
HPOUTR
HPOUTL
IO0
IO23
IO2
IO4
IO5IO15
IO13 IO18
IO19
KEY_A D
MGND
MIC
MIC1
C27
C28
C29
MIC1P
MIC1N
R40
C18
C17
M1P
M1N
R41
R39
R38
MBIAS
C25
SD
MIC2
C30
C31
C32
MIC2P
MIC2N
R44
C20
C19
M2P
M2N
R45
R43
R42
C26
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
SD1
SD_DATA2
SD_DATA3
SD_CLK
GND
SD_DATA0
SD_DATA1
R37R35R34R33R32
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
M1
IO14
IO12
C10
GND
SD_DATA2
SD_DATA3
SD_CMD
SD_CLK
SD_DATA0
SD_DATA1
GND
HBIAS
HPOUTR
HPOUTL
C8
R19
C14
R22
AGNDAGND
R21
R20 HPOR
HPOL
AMP
EARPHONES
LINEINL
LINEINR
C13
C12
LINEIN
R46
INL
INR
VDD3V 3
C16
GND
1
6
4
5
3
2
J1
CTRL
1
Bypass
2
InP
3
InN
4
VoN
5
VCC
6
GND
7
VoP
8
U4
CTRL
1
Bypass
2
InP
3
InN
4
VoN
5
VCC
6
GND
7
VoP
8
U5
PGND
C42
PGND
PGND
PGND
PGND
C46
PGND
C51
C53
PGND
PGND
CTRL
CTRL
C43
PGND
PGND
C47
INL
INR
1
6
4
5
3
2
J2
HPOR
HPOL
HP_Detect
SD_Detect
AGND
AGND
AGND
R36
VDD3V3
R71
R72
R73
R74
R24
R25
R29
R26
R27
R28
HP_Detect
SD_Detect
R23
IO34
1
2
J3
1
2
J4
R18
R31
IO34
IO36
IO39
IO22
R56
R57
R55
R58
R69
R68
R67
R66
R59
R70
IO5
IO18
R60
R61
R62
R63
R64
K3
K4
K5
K6
K7
K8
GND
KEY_AD
R52
VDD3V3
R54
IO13_Key
IO14
IO2
IO4
IO23
IO19
KEYS
MODULE
R53
C41
IO36
GND
VDD3V 3
C36
PGND
C35
PGND
C34
PGND
C33
PGND
VDD5V
VDD5V
VDD5V
VDD5V
C44
C45
C11
C9
GND
PGND
R65
GND
Ai-Thin k er ESP32-Audio-Ki t
V2.2
Jony
3/3
SD_CMD
IO39
IO12
AGND
R30
GND
IO21 ShutDown
IO12
IO21
CMD
OUT
1
GND
2
GND
3
VDD
4
MIC3
MBIAS
C22
MIC1P
OUT
1
GND
2
GND
3
VDD
4
MIC4
C24
MIC2P
C21
MIC1N
C23
MIC2N
C56 C57 C58
C59 C60 C61
KEY1
KEY2
KEY3
KEY4
KEY5
KEY6
KEY1 KEY2 KEY3
KEY4 KEY5 KEY6
GND
GND
HBIAS
R75
MGNDGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
MGND
PIC801
PIC802
COC8
PIC901
PIC902
COC9
PIC1001
PIC1002
COC10
PIC1101
PIC1102
COC11
PIC1201
PIC1202
COC12
PIC1301
PIC1302
COC13
PIC1401
PIC1402
COC14
PIC1501
PIC1502
COC15
PIC1601
PIC1602
COC16
PIC1701
PIC1702
COC17
PIC1801
PIC1802
COC18
PIC1901
PIC1902
COC19
PIC2001
PIC2002
COC20
PIC2101
PIC2102
COC21
PIC2201
PIC2202
COC22
PIC2301
PIC2302
COC23
PIC2401
PIC2402
COC24
PIC2501
PIC2502
COC25
PIC2601
PIC2602
COC26
PIC2701
PIC2702
COC27
PIC2801
PIC2802
COC28
PIC2901
PIC2902
COC29
PIC3001
PIC3002
COC30
PIC3101
PIC3102
COC31
PIC3201
PIC3202
COC32
PIC3301
PIC3302
COC33
PIC3401
PIC3402
COC34
PIC3501
PIC3502
COC35
PIC3601
PIC3602
COC36
PIC3701
PIC3702
COC37
PIC3801
PIC3802
COC38
PIC3901
PIC3902
COC39
PIC4001
PIC4002
COC40
PIC4101
PIC4102
COC41
PIC4201
PIC4202
COC42
PIC4301
PIC4302
COC43
PIC4401
PIC4402
COC44
PIC4501
PIC4502
COC45
PIC4601
PIC4602
COC46
PIC4701
PIC4702
COC47
PIC4801
PIC4802
COC48
PIC4901
PIC4902
COC49
PIC5001
PIC5002
COC50
PIC5101
PIC5102
COC51
PIC5201
PIC5202
COC52
PIC5301
PIC5302
COC53
PIC5601
PIC5602
COC56
PIC5701
PIC5702
COC57
PIC5801
PIC5802
COC58
PIC5901
PIC5902
COC59
PIC6001
PIC6002
COC60
PIC6101
PIC6102
COC61
PIJ101
PIJ102
PIJ103
PIJ104
PIJ105
PIJ106
COJ1
PIJ201
PIJ202
PIJ203
PIJ204
PIJ205
PIJ206
COJ2
PIJ301
PIJ302
COJ3
PIJ401
PIJ402
COJ4
PIK301
PIK302
COK3
PIK401
PIK402
COK4
PIK501
PIK502
COK5
PIK601
PIK602
COK6
PIK701
PIK702
COK7
PIK801
PIK802
COK8
PIM101
PIM102
PIM103
PIM104
PIM105
PIM106
PIM107
PIM108
PIM109
PIM1010
PIM1011
PIM1012
PIM1013
PIM1014
PIM1015
PIM1016
PIM1017
PIM1018
PIM1019
PIM1020
PIM1021
PIM1022
PIM1023
PIM1024
PIM1025
PIM1026
PIM1027
PIM1028
PIM1029
PIM1030
PIM1031
PIM1032
PIM1033
PIM1034
PIM1035
PIM1036
PIM1037
PIM1038
PIM1039
COM1
PIMIC101
PIMIC102
COMIC1
PIMIC201
PIMIC202
COMIC2
PIMIC301
PIMIC302
PIMIC303
PIMIC304
COMIC3
PIMIC401
PIMIC402
PIMIC403
PIMIC404
COMIC4
PIR1801
PIR1802
COR18
PIR1901
PIR1902
COR19
PIR2001
PIR2002
COR20
PIR2101
PIR2102
COR21
PIR2201
PIR2202
COR22
PIR2301
PIR2302
COR23
PIR2401
PIR2402
COR24
PIR2501
PIR2502
COR25
PIR2601
PIR2602
COR26
PIR2701
PIR2702
COR27
PIR2801
PIR2802
COR28
PIR2901
PIR2902
COR29
PIR3001
PIR3002
COR30
PIR3101
PIR3102
COR31
PIR3201
PIR3202
COR32
PIR3301
PIR3302
COR33
PIR3401
PIR3402
COR34
PIR3501
PIR3502
COR35
PIR3601
PIR3602
COR36
PIR3701
PIR3702
COR37
PIR3801
PIR3802
COR38
PIR3901
PIR3902
COR39
PIR4001
PIR4002
COR40
PIR4101
PIR4102
COR41
PIR4201
PIR4202
COR42
PIR4301
PIR4302
COR43
PIR4401
PIR4402
COR44
PIR4501
PIR4502
COR45
PIR4601
PIR4602
COR46
PIR4701
PIR4702
COR47
PIR4801
PIR4802
COR48
PIR4901
PIR4902
COR49
PIR5001
PIR5002
COR50
PIR5101
PIR5102
COR51
PIR5201
PIR5202
COR52
PIR5301
PIR5302
COR53
PIR5401
PIR5402
COR54
PIR5501
PIR5502
COR55
PIR5601
PIR5602
COR56
PIR5701
PIR5702
COR57
PIR5801
PIR5802
COR58
PIR5901
PIR5902
COR59
PIR6001
PIR6002
COR60
PIR6101
PIR6102
COR61
PIR6201
PIR6202
COR62
PIR6301
PIR6302
COR63
PIR6401
PIR6402
COR64
PIR6501
PIR6502
COR65
PIR6601
PIR6602
COR66
PIR6701
PIR6702
COR67
PIR6801
PIR6802
COR68
PIR6901
PIR6902
COR69
PIR7001
PIR7002
COR70
PIR7101
PIR7102
COR71
PIR7201
PIR7202
COR72
PIR7301
PIR7302
COR73
PIR7401
PIR7402
COR74
PIR7501
PIR7502
COR75
PISD101
PISD102
PISD103
PISD104
PISD105
PISD106
PISD107
PISD108
PISD109
PISD1010
PISD1011
PISD1012
PISD1013
COSD1
PIU401
PIU402
PIU403
PIU404
PIU405
PIU406
PIU407
PIU408
COU4
PIU501
PIU502
PIU503
PIU504
PIU505
PIU506
PIU507
PIU508
COU5