!
Appendix A
A.
Appendix - Schematics
A.1. Main Board (A)
!
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Pow
er
Supp
ly
for
ESP32:
3.3V/8
0
0
m
A
BLM18SG12
1
T
N
1
D
ESP32
M
odule:
1.For
Button_Array_ADC;
2.Cap
should
close
to
Module.
Bu
t
t
o
n
s
:
Power
On
LED
VISHAY:IFSC1515
A
H
E
R
2
R
2
M
0
1
Not
e
:
1.Vout
=
0.6*(1+R1/R2);
EN
GPI34
GPI35
GPIO32
GPIO33
GPIO25 GPIO26
GPIO27
GPIO14
ESP_3V3
GPIO13
DGND
GPIO22
TXD0
RXD0 GPIO21
GPIO19
GPIO18
GPIO4
GPIO0
GPIO5
GPIO23
Module_NC
GPIO15
GPIO2
DGND
B_SHD/SD2
B_SWP/SD3
B_SCS/CMD
B_SCK/CLK
B_SDO/SD0
B_SDI/SD1
GPIO17_NC
GPIO16_NC
DGND
GPIO12
SENSOR_VP
GPI36
SENSOR_VN
GPI39
RXD0
TXD0 Boot_EN
Boot_IO0
Boot_IO2
ES_I2S_MCLK
ES_I2S_SCLK
ES_I2S_LRCK
ES_I2S_DSDIN PA_CTRL
GPIO0_DSP_MASTER_CLK
DBMD_INT_3V3
DSP_APR_SPI_CS
DSP_APR_SPI_CLK
DSP_APR_SPI_MOSI
DSP_APR_SPI_MISO
DSP_APR_I2S_BCLK_3V3
DSP_APR_I2S_LRCK_3V3
DSP_VT_I2S_DI_3V3
DSP_VT_RSTN_3V3
DSP_APR_RSTN_3V3
DSP_VT_SPI_SCS_3V3
DSP_APR_I2S_DO_3V3
DSP_VT_WAKEUP_3V3
DSP_APR_WAKEUP_3V3
DSP_VT_I2S_LevShift_EN_L
IO23_I2C_SCL
IO18_I2C_SDA
Button_Array_ADC
GPIO2
DGND
GPIO1
3
A_SH
D/SD
2
A_SW
P/SD
3
A_SC
S/C
MD
A_SC
K/C
LK
A_SD
O/SD
0
A_SD
I/SD
1
GPIO1
5
GPIO26
GPIO27
GPI34
GPIO12
DGND
GPIO25
SENSOR_VP
GPI36
SENSOR_VN
GPI39
GPI35
GPIO32
GPIO33
GPIO14
GPIO23
GPIO22
TXD0
RXD0 GPIO21 Module_NC
GPIO19
GPIO18
GPIO5
GPIO17_NC
GPIO16_NC
GPIO4
GPIO0
DGND
EN
ESP_3V3
DBMD_INT_3V3
GPI36
Button_Array_ADC
GPI39
GPI39
GPI36
GPIO22
GPI35
GPI35
DSP_VT_I2S_DI_3V3
GPIO0_DSP_MASTER_CLK ES_I2S_MCLK
Boot_IO0
GPIO0
DSP_APR_I2S_BCLK_3V3
ES_I2S_SCLK
DSP_APR_I2S_LRCK_3V3
ES_I2S_LRCK
DSP_APR_I2S_DO_3V3 ES_I2S_DSDIN
GPIO5
GPIO25
GPIO26
GPIO32
GPIO33
GPIO13 GPIO19
GPIO27
GPIO18
DSP_APR_SPI_CS
DSP_APR_SPI_CLK DSP_APR_SPI_MOSI
DSP_APR_SPI_MISO
DSP_VT_SPI_SCS_3V3
DSP_VT_RSTN_3V3
DSP_APR_RSTN_3V3
GPIO4
GPIO21
GPIO22
PA_CTRL
GPIO2
Boot_IO2
DSP_APR_WAKEUP_3V3
GPIO23
IO18_I2C_SDA
IO23_I2C_SCL
GPIO14 GPIO15
DSP_VT_WAKEUP_3V3 DSP_VT_I2S_LevShift_EN_L
RXD0
RXD0
TXD0
TXD0
Boot_EN
EN
GPIO12
GPIO13 GPIO14
GPIO15
GPI34
GPIO12
GPIO18
GPIO23
System_LED
Boot_IO0
Boot_IO2
Boot_EN
System_LED
VDD
33
_EN
DGND
VDD33
DGND
DGND
GND
DGND
VDD33
DGND
DGND
VBUS
DGND
DGND
ESP_3V3
DGND
ESP_3V3
DGND
VDD33
GND
GND
GND
GND
GND
GND
DGND
DGND
DGND
DGND
VDD33
DGND
VDD33_IN
VDD33_IN
TXD0
5
Boot_EN
5
Boot_IO0
5
Boot_IO2
5
PA_CTRL
4
GPIO0_DSP_MASTER_CLK
3
DSP_VT_RSTN_3V3
3
DSP_APR_RSTN_3V3
3
DBMD_INT_3V3
3
DSP_APR_SPI_CS
3
DSP_VT_SPI_SCS_3V3
3
DSP_APR_SPI_CLK
3
DSP_APR_SPI_MOSI
3
DSP_APR_SPI_MISO
3
DSP_APR_I2S_BCLK_3V3
3
DSP_APR_I2S_LRCK_3V3
3
DSP_APR_I2S_DO_3V3
3
DSP_VT_I2S_DI_3V3
3
DSP_VT_WAKEUP_3V3
3
DSP_APR_WAKEUP_3V3
3
ES_I2S_DSDIN
4
ES_I2S_LRCK
4
ES_I2S_SCLK
4
ES_I2S_MCLK
4
DSP_VT_I2S_LevShift_EN_L
3
RXD0
5
Button_Array_ADC
5
IO23_I2C_SCL
4,5
IO18_I2C_SDA
4,5
System_LED
5
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_ESP32_MCU>
V3.1
<ESP32-LyraTD-DSPG_A>
C
25
Thursday, February 14, 2019
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_ESP32_MCU>
V3.1
<ESP32-LyraTD-DSPG_A>
C
25
Thursday, February 14, 2019
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_ESP32_MCU>
V3.1
<ESP32-LyraTD-DSPG_A>
C
25
Thursday, February 14, 2019
R11
0R(1%)
R18
0R(1%)
R3
10K(1%)
R21
0R(1%)
R7
10K(1%)
C5
0.1uF/50V(10%)
R32
0R(1%)
R2 10K(1%)
R9
0R(1%)
C7
10uF/10V(20%)(NC)
C3 1uF/16V(10%)
R8
0R(1%)
IN
GN
D
EN
FB
LX
U19
SY8089AAAC
4
2
1
5
3
R36
0R(1%)
TP1
1
R4
10K(1%)(NC)
R242
0R(1%)
L10
2.2uH(20%)@Isat=3A
R12
0R(1%)
R22
0R(1%)
R33
0R(1%)
R239
10K(1%)
R281 150K(1%)
R24
1K(1%)
C253
0.1uF/50V(10%)
TP2
1
R25
0R(1%)
C6
0.1uF/50V(10%)
R23
0R(1%)
R31
1K(1%)
R6
10K(1%)(NC)
R13
0R(1%)
TP3
1
C9
0.1uF/50V(10%)(NC)
R282 680K(1%)
Q1
LBSS138LT1G
R240
10K(1%)
R19
0R(1%)
R26
0R(1%)
TP4
1
R5
10K(1%)(NC)
R14
51R(1%)
U3
AP7361C-33-ER-7/13(NC)
GND
1
VOUT
2
VIN
3
Tab
4
C250 6.8pF/50V(±0.1pF)
R283 10K(1%)
C1
100uF/6.3V(20%)
R241
5.1K(1%)
R27
0R(1%)
Q2
LBSS138LT1G
C8
0.1uF/50V(10%)(NC)
D12
RED LED
C251 22uF/10V(20%)
R29
0R(1%)(NC)
L1
3A@120ohm,25mohm
R15
0R(1%)
C4
0.1uF/50V(10%)
U1
ESP32-WROOM-32(NC)
GND1
1
3V3
2
EN
3
SENSOR_VP
4
SENSOR_VN
5
IO34
6
IO35
7
IO32
8
IO33
9
IO25
10
IO26
11
IO27
12
IO14
13
IO12
14
GND3
38
IO23
37
IO22
36
TXD0
35
RXD0
34
IO21
33
NC
32
IO19
31
IO18
30
IO5
29
IO17
28
IO16
27
IO4
26
IO0
25
GND
2
15
IO1
3
16
SD2
17
SD3
18
CMD
19
CLK
20
SD0
21
SD1
22
IO1
5
23
IO2
24
P_GND
39
SW7
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
C10
10uF/10V(20%)(NC)
R16
0R(1%)
C254 0.1uF/50V(10%)
R30
0R(1%)
R34
0R(1%)
SW8
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
C2
0.1uF/50V(10%)
U2
ESP32-WROVER-B/M321X0228RBB
GND1
1
3V3
2
EN
3
SENSOR_VP
4
SENSOR_VN
5
IO34
6
IO35
7
IO32
8
IO33
9
IO25
10
IO26
11
IO27
12
IO14
13
IO12
14
GND2
15
IO13
16
SD2
17
SD3
18
CMD
19
CLK
20
SD0
21
SD1
22
IO15
23
IO2
24
IO0
25
IO4
26
NC1
27
NC2
28
IO5
29
IO18
30
IO19
31
NC
32
IO21
33
RXD0
34
TXD0
35
IO22
36
IO23
37
GND3
38
P_GND
39
R35
0R(1%)
R10
0R(1%)(NC)
R20
0R(1%)
R17
51R(1%)
R28
10K(1%)
R1
0R(1%)
R280 10K(1%)
C252
22uF/10V(20%)
Espressif
!
/
!
11 16
2019.07
