!
Appendix A
A.2. Sub Board (B)
!
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
AD=0:
I2C
slave
address:0'b
0111
100x;
2.42
V
VO
L
+
1.8
V
1.2
V
0.6
V
Mu
t
e
VO
L
-
A
c
t
i
o
n
LED
Driver:
DM
I
C
A
r
r
a
y
:
KEY
Array:
Not
e
s
：
1.
Default
，
we
use
VCC(
p
ower
coming
from
USB
or
Battery)
to
p
ow
er
LED
Driver
and
LEDs
,thus
we
can
saved
one
Power
Regula
tor
.
2.
I2C
of
LED
Driver
is
p
ull-u
p
on
the
main-board
b
y
VDD3V3
.
3.
Attention
,
DMIC
_
CLK/DAT
is
derived
from
DSP
,
a
nd
it
is
1.8V
.
4.
Pull-u
p
resistor
for
Button
_
Array
_
ADC
is
p
o
p
ulat
ed
on
main-board
.
Location
Holes:
FPC
0.5MM
16Pins
DMIC0_DAT
DMIC0_CLK
DMIC0_DAT
DMIC0_CLK
DMIC1_CLK
DMIC1_DAT
Button_Array_ADC
IO18_I2C_SDA
IO23_I2C_SCL
DMIC0_DAT
DMIC0_CLK
DMIC1_DAT DMIC1_CLK
Button_Array_ADC
IO18_I2C_SDA
IO23_I2C_SCL
LED_SCL
LED_SDA
LED_VCC
GND
DMIC_VCC
DMIC_VCC
GND
GND
GND
DMIC_VCC
DMIC_VCC
GND
GND
GND
DMIC_VCC
DMIC_VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND LED_VCC
GND
DMIC_VCC
GND
GND
GND
LED_VCC
GND
GND
GND
GND
LED_VCC
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_DMIC_LED_KEY>
V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22
Thursday, March 07, 2019
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_DMIC_LED_KEY>
V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22
Thursday, March 07, 2019
Ti
tle
S
ize
D
ocu
m
en
t
N
um
be
r
Re
v
Da
te
:
Sh
e
e
t
of
<02_DMIC_LED_KEY>
V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22
Thursday, March 07, 2019
R11
5.1K(1%)
R28
5.1K(1%)
R7
5.1K(1%)
R52
0R(1%)
R22
5.1K(1%)
R8
10K(1%)
R19
5.1K(1%)
R14
5.1K(1%)
R57
5.1K(1%)
C5
22pF/50V(5%)
R30
5.1K(1%)
D9
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R46
10K(1%)
D1
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
C9
0.1uF/50V(10%)
R43
10K(1%)
D8
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R32
5.1K(1%)
R5
5.1K(1%)
U4
NSM0418DT
DATA
1
CLK
2
4
VDD
3
SELECT
GND1
5
GND2
6
GND3
7
GND4
8
R45
10K(1%)(NC)
C6
22pF/50V(5%)
D10
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R27
5.1K(1%)
R56
5.1K(1%)
STD1
M3-L5-3.5
R47
27.5K(1%)
D2
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
C1
10uF/10V(20%)
C4
0.1uF/50V(10%)
R42
0R(1%)
R25
5.1K(1%)
D4
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R37
5.1K(1%)
C3
0.1uF/50V(10%)
U2
NSM0418DT
DATA
1
CLK
2
4
VDD
3
SELECT
GND1
5
GND2
6
GND3
7
GND4
8
D6
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
D3
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
SW4
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
SW3
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
J1
AFC01-S16FCC-00
4
4
3
3
2
2
1
1
17
17
18
18
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
SW2
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
R50
2.2K(1%)
STD3
M3-L5-3.5
R15
3.3K(1%)
R51
0R(1%)
C8
0.1uF/50V(10%)
R4
5.1K(1%)
R38
5.1K(1%)
R16
10K(1%)
R26
5.1K(1%)
R6
5.1K(1%)
R21
5.1K(1%)
R18
5.1K(1%)
U3
NSM0418DT
DATA
1
CLK
2
4
VDD
3
SELECT
GND1
5
GND2
6
GND3
7
GND4
8
R13
5.1K(1%)
R9
5.1K(1%)
R10
0R(1%)
R31
5.1K(1%)
SW1
K2-1109SP-B4SA-01
1
1
2
2
3
3
4
4
R41
0R(1%)
R35
5.1K(1%)
C7
0.1uF/50V(10%)
R44
10K(1%)(NC)
R40
0R(1%)
U1
IS31FL3236A
OUT3
1
OUT4
2
OUT5
3
OUT6
4
OUT7
5
OUT8
6
OUT9
7
OUT10
8
OUT11
9
OUT12
10
OUT13
11
OUT14
12
OUT15
13
OUT16
14
OUT17
15
OUT18
16
GND1
17
OUT19
18
OUT20
19
OUT21
20
OUT22
21
OUT23
22
OUT24
23
OUT25
24
OUT26
25
OUT27
26
OUT28
27
OUT29
28
OUT30
29
OUT31
30
OUT32
31
OUT33
32
OUT34
33
OUT35
34
OUT36
35
OUT1
43
OUT2
44
SCL
42
SDA
41
R_EXT
40
GND2
39
VCC
38
AD
37
SDB
36
PGND
45
R34
5.1K(1%)
D12
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R49
5.76K(1%)
STD2
M3-L5-3.5
R24
5.1K(1%)
R55
5.1K(1%)
R36
5.1K(1%)
R33
5.1K(1%)
D5
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
C2
1uF/16V(10%)
R54
10K(1%)(NC)
D11
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R39
0R(1%)
R53
10K(1%)
R48
12K(1%)
D7
19-237ABHR6GHC-A012T
G
2
R
1
B
4
CV
3
R29
5.1K(1%)
R2
5.1K(1%)
R23
5.1K(1%)
R20
5.1K(1%)
STD4
M3-L5-3.5
R17
5.1K(1%)
R1
5.1K(1%)
R12
5.1K(1%)
R3
0R(1%)
Espressif
!
/
!
15 16
2019.07
