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ESP32-LyraTD-DSPG User Guide
Version 1.1 Espressif Systems Copyright © 2020
About This Guide This document helps you to get started with the ESP32-LyraTD-DSPG development board.
Release Notes
Documentation Change Notification Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe at https://www.espressif.com/en/subscribe.
Certification Download certificates for Espressif products from https://www.espressif.com/en/certificates.
Date Version Release notes
2019.06 V1.0 Initial release.
2020.07 V1.1
• Updated E8388 to ES8388;
• Corrected typos of some subtitles in Section 1.1.
• Add Submit Documentation Feedback link
Espressif Submit Documentation Feedback 2020.07
Table of Contents 1. Overview 1 ................................................................................................................................
1.1. ESP32-LyraTD-DSPG 1................................................................................................................1.2. Hardware Resources 1..................................................................................................................
2. Configuring for AVS 3 ...............................................................................................................2.1. Software Preparation 3.................................................................................................................2.2. Hardware Preparation 3................................................................................................................2.3. Flashing the Firmware 3................................................................................................................
2.3.1. Driver Installation 4..........................................................................................................2.3.2. Flashing ESP32 4.............................................................................................................
2.4. Network Configuration 7...............................................................................................................2.4.1. Wi-Fi Networking 7..........................................................................................................
2.5. Interactive Function 10..................................................................................................................2.5.1. Voice Recognition 10.......................................................................................................2.5.2. Buttons 10.......................................................................................................................
A. Appendix - Schematics 11 .......................................................................................................A.1. Main Board (A) 11..........................................................................................................................A.2. Sub Board (B) 15...........................................................................................................................
Espressif Submit Documentation Feedback 2020.07
1. Overview
1. Overview ESP32-LyraTD-DSPG is one of Espressif’s Audio Development Board based on ESP32 MCU and DBMD5P DSP. It is an Acoustic Echo Cancelation (AEC) solution supporting voice recognition, near-field and far-field voice wake-up. Audio files in the format of WAV, MP3, AAC, FLAC, OPUS and OGG can be decoded and encoded without quality loss. It also supports connection to Amazon’s AVS (Alexa Voice Service), Google's Dialogflow and Google's GVA (Google Voice Assistant).
1.1. ESP32-LyraTD-DSPG ESP32-LyraTD-DSPG is based on ESP32-WROVER-B, a BT/Wi-Fi combo module, and a digital signal processor (DSP) that features a three-microphone array for noise reduction, echo cancelation, beam-forming and detection. ESP32-LyraTD-DSPG is integrated with peripheral devices and consists of two development boards. The sub board mainly consists of the microphone array, function keys and LEDs. The main board is integrated with power management, Wi-Fi and audio modules like DSP, Codec and power amplifier. The two boards can be connected with FPC interface.
Figure 1-1. ESP32-LyraTD-DSPG Layout
1.2. Hardware Resources 1. USB power input
Provides power supply to the whole system. It is recommended that the system be connected to a power adapter for sufficient current supply.
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1. Overview
2. ESP32-WROVER-B module
This is a powerful, general-purpose, Wi-Fi+BT+BLE dual core MCU module, targeting a wide variety of applications ranging from low-power sensor networks to the most demanding tasks, such as voice encoding/decoding, music streaming and runs voice assistant client SDK.
3. DBMD5P DSP
DBMD5P is a dual core, programmable voice processor which supports various functionalities such as voice trigger (VT), voice commands, voice authentication (VA), acoustic echo cancellation (AEC). This audio DSP is used for wake-word detection. It captures audio data from an external array of three digital microphones.
4. Audio codec
ES8388 audio codec is used for digital audio conversion to analog audio output.
5. Audio amplifier
This audio power amplifier sends audio signals from the Codec to external speakers for playback.
6. CP2102N USB-to-UART chip
An upgraded version of the CP2102 chip supports USB-to-UART conversion.
7. USB port
This is a normal USB communication port between PC and the main board.
8. Earphone connector
Used for plugging in earphones/headphone. Audio output is via Codec.
9. Speaker connector
Supports one external speaker output via Power Amplifier.
10.FPC connector
This connection is used for connecting external sub board consisting of microphone array, buttons and LEDs via flex cable.
11.Mini Din connector
This connection can be used for connecting the microphone cable, if there is such a requirement. By default, this connector is not mounted on the main board.
12.Sub board
Sub board consists of LEDs and LED driver along with function keys and Mic array connected via FPC cable.
📖 Note:
The IC design of this chip is a little different from CP2102.
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2. Configuring for AVS
2. Configuring for AVS 2.1. Software Preparation
1. Installing Flash Download Tool
Linux/macOS/Windows users can use the terminal to flash firmware. For more details, please check ESP-IDF Programming Guide.
Windows users may also use a graphical tool to flash firmware into the board using the Flash Download Tool.
2. Downloading Firmware
Please follow the build instructions of the Alexa SDK from the Github page: https://github.com/espressif/esp-va-sdk.
3. Debugging Tool
Use serial monitor/console that suits your development environment at baud rate of 115200.
4. App for Provisioning
In order to run Alexa you need to provision LyraTD-DSPG with Alexa credentials and network settings (Wi-Fi ssid and passphrase). Please install the android APK from the Play Store here: https://play.google.com/store/apps/details?id=com.espressif.provbleavs. iOS support will be available soon.
2.2. Hardware Preparation • 1 x PC (Linux Operating System is recommended)
• 1 x LyraTD-DSPG
• 2 x Micro USB cables (one is for the USB power supply)
• 1 x Speaker or 1 x earphone
2.3. Flashing the Firmware This document captures the process for flashing the firmware on Windows. Please refer to the ESP-VA-SDK repository on Github for setup on other platforms.
📖 Note:
The GitHub repository uses Espressif’s wake-word engine (WWE) for processing the ‘Alexa’ wakeword. This allows easy evaluations. For production use case, please reach out to [email protected] or your DSPG sales representative for obtaining a Amazon certified wake-word engine.
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2. Configuring for AVS
2.3.1. Driver Installation
Connect the board to a PC with a Micro-USB cable and install the USB-to-UART driver.
2.3.2. Flashing ESP32
Figure 2-1. Flash Download Tool
• In order to build examples of esp-va-sdk, please follow the instructions mentioned on the GitHub page.
• Once you build the Alexa firmware, you will generate three artifacts: bootloader.bin, partitions.bin and alexa.bin.
• For Flash Download Tool users, follow the instructions given below:
1. Run Flash Download Tool, and click on “ESP32 Download Tool” at the interface. See Figure 2-1 above.
2. Then you will see the interface shown in Figure 2-2 below.
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2. Configuring for AVS
Figure 2-2. ESP32 Download Tool
3. Select the binary files (mentioned in table below) and set appropriate address in the tool as shown in Figure 2-3.
Binary Files Address Function
bootloader.bin 0x1000 basic configuration
partitions.bin 0x8000 basic configuration
alexa.bin 0x10000 audio application
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2. Configuring for AVS
Figure 2-3. Flashing Configuration
4. The SPI Download configuration on the ESP32 Download Tool is shown in Figure 2-3. Select “80 MHz” for “SPI SPEED”; select “DIO” for “SPI MODE”; and select “128 Mbit” for “FLASH SIZE”.
5. Select the COM port in line with the one used by the PC; select “1152000” as a baud rate.
6. Click the “Start” button on the ESP32 Flash Download Tool to start downloading the firmware.
7. Wait for the download to finish. See Figure 2-4.
Figure 2-4. Downloading Firmware
📖 Note:
Terminal users can follow the flashing instructions as available on the GitHub page.
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2. Configuring for AVS
2.4. Network Configuration 2.4.1. Wi-Fi Networking
1. After successfully downloading the firmware, power on the board again by pressing the EN button.
2. To configure the network for the first time:
• Turn on the bluetooth in your phone. Open Espressif’s Alexa programming app and click on Provision New Device. Make sure your phone has internet connectivity.
Figure 2-5. Provision New Device
• The provisioning happens over BLE (Bluetooth Low Energy). Android mandates applications to have Location permission for accessing BLE. Please provide the permission when the pop-up shows up.
• You will see the list of available devices that needs to be provisioned, namely ESP-Alexa-WXYZ. Select the device that you wish to provision.
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2. Configuring for AVS
Figure 2-6. List of available devices
• Next step is to login to your amazon account.
Figure 2-7. Login to your amazon
• After successful login and authorization, you will be shown a list of Wi-Fi networks in the vicinity. Choose the network that you wish the device to connect to. Once selected, enter the passphrase of that Wi-Fi network and click on the provision button.
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2. Configuring for AVS
Figure 2-8. Available Wi-Fi networks
Figure 2-9. Enter your passphrase
• On successfully connecting to the Wi-Fi network, after provisioning, a boot up LED pattern will show up (Same as Echo dot), after which the DSP and Alexa will be initialized, and ready to take voice commands.
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2. Configuring for AVS
2.5. Interactive Function 2.5.1. Voice Recognition
• Once all initialization are done, the device is ready. You can use either use "Action" button on the board (Tap-To-Talk) or say "Alexa" to start a conversation. For Tap-to-Talk, press and release the button and speak.
• You can now ask any command like: - Tell me a joke. - How is the weather? - Will it rain today? - Sing a song. - Play TuneIn radio. - Set volume level to 7.
2.5.2. Buttons
• The “Action” button can be used as tap-to-talk. The same button can also be used to disable an Alarm/Timer.
• The “Vol+” and “Vol-” buttons can be used to adjust the volume of the sound. Press them repeatedly until you reach the desired sound volume.
• The "Mute" button can be used to mute/unmute the device. • To reset to factory settings, press Vol+ and Vol- button together for about 10 seconds
until you see LED blink pattern.
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Appendix A
A. Appendix - Schematics A.1. Main Board (A)
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
Power Supply for ESP32:
3.3V/800mA
BLM18SG121TN1D
ESP32 Module: 1
.For Button_Array_ADC;
2.Cap should close to Module.
Buttons:
Power On LED
VISHAY:IFSC1515AHER2R2M01
Note:
1.Vout = 0.6*(1+R1/R2);
EN
GP
I34
GP
I35
GP
IO32
GP
IO33
GP
IO25
GP
IO26
GP
IO27
GP
IO14
ES
P_3V
3
GP
IO13
DG
ND
GP
IO22
TX
D0
RX
D0
GP
IO21
GP
IO19
GP
IO18
GP
IO4
GP
IO0
GP
IO5
GP
IO23
Module
_N
C
GP
IO15
GP
IO2
DG
ND
B_S
HD
/SD
2B
_S
WP
/SD
3B
_S
CS
/CM
DB
_S
CK
/CLK
B_S
DO
/SD
0B
_S
DI/S
D1
GP
IO17_N
CG
PIO
16_N
C
DG
ND
GP
IO12S
EN
SO
R_V
PG
PI3
6S
EN
SO
R_V
NG
PI3
9
RX
D0
TX
D0
Boot_
EN
Boot_
IO0
Boot_
IO2
ES
_I2
S_M
CLK
ES
_I2
S_S
CLK
ES
_I2
S_LR
CK
ES
_I2
S_D
SD
INP
A_C
TR
L
GP
IO0_D
SP
_M
AS
TE
R_C
LK
DB
MD
_IN
T_3V
3
DS
P_A
PR
_S
PI_
CS
DS
P_A
PR
_S
PI_
CLK
DS
P_A
PR
_S
PI_
MO
SI
DS
P_A
PR
_S
PI_
MIS
O
DS
P_A
PR
_I2
S_B
CLK
_3V
3D
SP
_A
PR
_I2
S_LR
CK
_3V
3
DS
P_V
T_I2
S_D
I_3V
3
DS
P_V
T_R
ST
N_3V
3D
SP
_A
PR
_R
ST
N_3V
3
DS
P_V
T_S
PI_
SC
S_3V
3
DS
P_A
PR
_I2
S_D
O_3V
3
DS
P_V
T_W
AK
EU
P_3V
3D
SP
_A
PR
_W
AK
EU
P_3V
3
DS
P_V
T_I2
S_LevS
hift
_E
N_L
IO23_I2
C_S
CL
IO18_I2
C_S
DA
Button_A
rray_
AD
C
GPIO2
DGNDGPIO13A_SHD/SD2A_SWP/SD3A_SCS/CMDA_SCK/CLKA_SDO/SD0A_SDI/SD1GPIO15
GP
IO26
GP
IO27
GP
I34
GP
IO12
DG
ND
GP
IO25S
EN
SO
R_V
PG
PI3
6S
EN
SO
R_V
NG
PI3
9
GP
I35
GP
IO32
GP
IO33
GP
IO14
GP
IO23
GP
IO22
TX
D0
RX
D0
GP
IO21
Module
_N
CG
PIO
19
GP
IO18
GP
IO5
GP
IO17_N
CG
PIO
16_N
CG
PIO
4G
PIO
0
DG
ND
EN
ES
P_3V
3
DB
MD
_IN
T_3V
3G
PI3
6B
utton_A
rray_
AD
CG
PI3
9
GP
I39
GP
I36
GP
IO22
GP
I35
GP
I35
DS
P_V
T_I2
S_D
I_3V
3
GP
IO0_D
SP
_M
AS
TE
R_C
LK
ES
_I2
S_M
CLK
Boot_
IO0
GP
IO0
DS
P_A
PR
_I2
S_B
CLK
_3V
3E
S_I2
S_S
CLK
DS
P_A
PR
_I2
S_LR
CK
_3V
3E
S_I2
S_LR
CK
DS
P_A
PR
_I2
S_D
O_3V
3E
S_I2
S_D
SD
IN
GP
IO5
GP
IO25
GP
IO26
GP
IO32
GP
IO33
GP
IO13
GP
IO19
GP
IO27
GP
IO18
DS
P_A
PR
_S
PI_
CS
DS
P_A
PR
_S
PI_
CLK
DS
P_A
PR
_S
PI_
MO
SI
DS
P_A
PR
_S
PI_
MIS
O
DS
P_V
T_S
PI_
SC
S_3V
3
DS
P_V
T_R
ST
N_3V
3D
SP
_A
PR
_R
ST
N_3V
3G
PIO
4G
PIO
21
GP
IO22
PA
_C
TR
L
GP
IO2
Boot_
IO2
DS
P_A
PR
_W
AK
EU
P_3V
3
GP
IO23
IO18_I2
C_S
DA
IO23_I2
C_S
CL
GP
IO14
GP
IO15
DS
P_V
T_W
AK
EU
P_3V
3D
SP
_V
T_I2
S_LevS
hift
_E
N_L
RX
D0
RX
D0
TX
D0
TX
D0
Boot_
EN
EN
GP
IO12
GP
IO13
GP
IO14
GP
IO15
GP
I34
GP
IO12
GP
IO18
GP
IO23
Sys
tem
_LE
D
Boot_
IO0
Boot_
IO2
Boot_
EN
Sys
tem
_LE
D
VDD33_EN
DG
ND
VD
D33
DG
ND
DG
ND
GN
D
DG
ND
VD
D33
DG
ND
DG
ND
VB
US
DG
ND
DG
ND
ES
P_3V
3
DG
ND
ES
P_3V
3
DG
ND
VD
D33
GN
D
GN
D
GN
D
GN
DG
ND
GN
D
DG
ND
DG
ND
DG
ND
DG
ND
VD
D33
DG
ND
VD
D33_IN
VD
D33_IN
TX
D0
5B
oot_
EN
5B
oot_
IO0
5B
oot_
IO2
5
PA
_C
TR
L4
GP
IO0_D
SP
_M
AS
TE
R_C
LK
3
DS
P_V
T_R
ST
N_3V
33
DS
P_A
PR
_R
ST
N_3V
33
DB
MD
_IN
T_3V
33
DS
P_A
PR
_S
PI_
CS
3D
SP
_V
T_S
PI_
SC
S_3V
33
DS
P_A
PR
_S
PI_
CLK
3D
SP
_A
PR
_S
PI_
MO
SI
3D
SP
_A
PR
_S
PI_
MIS
O3
DS
P_A
PR
_I2
S_B
CLK
_3V
33
DS
P_A
PR
_I2
S_LR
CK
_3V
33
DS
P_A
PR
_I2
S_D
O_3V
33
DS
P_V
T_I2
S_D
I_3V
33
DS
P_V
T_W
AK
EU
P_3V
33
DS
P_A
PR
_W
AK
EU
P_3V
33
ES
_I2
S_D
SD
IN4
ES
_I2
S_LR
CK
4E
S_I2
S_S
CLK
4E
S_I2
S_M
CLK
4
DS
P_V
T_I2
S_LevS
hift
_E
N_L
3
RX
D0
5
Button_A
rray_
AD
C5
IO23_I2
C_S
CL
4,5
IO18_I2
C_S
DA
4,5
Sys
tem
_LE
D5
Titl
e
Siz
eD
ocu
ment
Num
ber
Re
v
Da
te:
Sh
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to
f
<02_E
SP
32_M
CU
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SP
32-L
yraT
D-D
SP
G_A
>
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25
Thurs
day,
Febru
ary
14, 2019
Titl
e
Siz
eD
ocu
ment
Num
ber
Re
v
Da
te:
Sh
ee
to
f
<02_E
SP
32_M
CU
>V
3.1
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SP
32-L
yraT
D-D
SP
G_A
>
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day,
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ary
14, 2019
Titl
e
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eD
ocu
ment
Num
ber
Re
v
Da
te:
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to
f
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SP
32_M
CU
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day,
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ary
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
GND
EN
FB
LX
U19
SY
8089A
AA
C
4
2
153
R36
0R
(1%
)
TP
11
R4 10K(1%)(NC)
R242
0R
(1%
)
L10
2.2
uH
(20%
)@Is
at=
3A
R12
0R
(1%
)
R22
0R
(1%
)
R33
0R
(1%
)
R239 10K(1%)
R281 150K(1%)
R24
1K
(1%
)
C253
0.1uF/50V(10%)T
P2
1
R25
0R
(1%
)
C6
0.1
uF
/50V
(10%
)
R23
0R
(1%
)
R31
1K
(1%
)
R6 10K(1%)(NC)
R13
0R
(1%
)
TP
31
C9
0.1uF/50V(10%)(NC)
R282 680K(1%)
Q1
LB
SS
138LT
1G
R240 10K(1%)
R19
0R
(1%
)
R26
0R
(1%
)
TP
41
R5 10K(1%)(NC)
R14
51R
(1%
)
U3
AP
7361C
-33-E
R-7
/13(N
C)
GND1
VO
UT
2V
IN3
Ta
b4
C250 6.8pF/50V(±0.1pF)
R283 10K(1%)
C1 100uF/6.3V(20%)
R241
5.1
K(1
%)
R27
0R
(1%
)
Q2
LB
SS
138LT
1G
C8
0.1uF/50V(10%)(NC)
D12
RE
D L
ED
C251 22uF/10V(20%)
R29
0R
(1%
)(N
C)
L1
3A
@120ohm
,25m
ohm
R15
0R
(1%
)
C4
0.1
uF
/50V
(10%
)
U1
ES
P32-W
RO
OM
-32(N
C)
GN
D1
1
3V
32
EN
3
SE
NS
OR
_V
P4
SE
NS
OR
_V
N5
IO3
46
IO3
57
IO3
28
IO3
39
IO2
51
0
IO2
61
1
IO2
71
2
IO1
41
3
IO1
21
4
GN
D3
38
IO2
33
7
IO2
23
6
TX
D0
35
RX
D0
34
IO2
13
3
NC
32
IO1
93
1
IO1
83
0
IO5
29
IO1
72
8
IO1
62
7
IO4
26
IO0
25
GND215
IO1316
SD217
SD318
CMD19
CLK20
SD021
SD122
IO1523
IO224P
_G
ND
39
SW
7
K2-1
109S
P-B
4S
A-0
1
11
22
33
44
C10 10uF/10V(20%)(NC)
R16
0R
(1%
)
C254 0.1uF/50V(10%)
R30
0R
(1%
)
R34
0R
(1%
)
SW
8
K2-1
109S
P-B
4S
A-0
1
11
22
33
44
C2 0.1uF/50V(10%)
U2
ES
P32-W
RO
VE
R-B
/M321X
0228R
BB
GN
D1
1
3V
32
EN
3
SE
NS
OR
_V
P4
SE
NS
OR
_V
N5
IO3
46
IO3
57
IO3
28
IO3
39
IO2
51
0
IO2
61
1
IO2
71
2
IO1
41
3
IO1
21
4
GN
D2
15
IO1
31
6
SD
21
7
SD
31
8
CM
D1
9C
LK
20
SD
02
1S
D1
22
IO1
52
3IO
22
4IO
02
5IO
42
6N
C1
27
NC
22
8IO
52
9IO
18
30
IO1
93
1N
C3
2IO
21
33
RX
D0
34
TX
D0
35
IO2
23
6IO
23
37
GN
D3
38
P_
GN
D3
9
R35
0R
(1%
)
R10
0R
(1%
)(N
C)
R20
0R
(1%
)
R17
51R
(1%
)
R28
10K
(1%
)
R1
0R
(1%
)
R280 10K(1%)
C252
22uF/10V(20%)
Espressif / 11 16Submit Documentation Feedback
2020.07
Appendix A
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
I2S:
SPI:
State:
1.Fixed 1.1V output@Imax=200mA.
Notes:
1.Vout=1.20*(1+R1/R2)=3.296V;
R1=52.3K,R2=30.1K are recommended for better performance.
R1
R2
Crystal:
Power For DSP:
For DSP Pin3/5/7.
For DSP Pin2/8/57.
For DSP Pin66/79.
For DSP Pin20/29/44.
For DSP Pin1/8/67/83.
For DSP Pin9/12/31/39/51.
R1
R2
Notes:
1.Vout=1.20*(1+R1/R2)=1.81V;
VISHAY:IFSC1515AHER2R2M01
Note:
1.Vout = 0.6*(1+R1/R2);
DS
P_D
M1_D
AT
AD
SP
_D
M1_C
LK
MA
ST
ER
_S
TR
AP
DS
P_A
PR
_S
PI_
MO
SI
DS
P_A
PR
_S
PI_
MIS
OD
SP
_A
PR
_S
PI_
CLK
DS
P_A
PR
_S
PI_
CS
DS
P_A
PR
_W
AK
EU
P_3V
3D
SP
_A
PR
_U
AR
T_T
XD
DS
P_A
PR
_U
AR
T_R
XD
DS
P_V
T_W
AK
EU
P_1V
8
DS
P_V
T_U
AR
T_T
X
DB
MD
_IN
T_1V
8
DS
P_V
T_M
AS
TE
R_C
LK
_1V
8
DS
P_A
PR
_M
AS
TE
R_C
LK
GP
IO0_D
SP
_M
AS
TE
R_C
LK
GP
IO0_D
SP
_M
AS
TE
R_C
LK
CR
YS
TA
L_D
SP
_M
AS
TE
R_C
LK
DS
P_V
T_R
ST
N_1V
8D
SP
_V
T_R
ST
N_3V
3
DS
P_V
T_R
ST
N_3V
3
DS
P_A
PR
_R
ST
N_3V
3
DS
P_A
PR
_R
ST
N_3V
3
DS
P_V
T_S
PI_
SD
O_1V
8
DS
P_V
T_S
PI_
CLK
_1V
8
DS
P_V
T_S
PI_
SD
I_1V
8
DS
P_A
PR
_S
PI_
CLK
DS
P_A
PR
_S
PI_
MO
SI
DS
P_V
T_S
PI_
SC
S_1V
8D
SP
_V
T_S
PI_
SC
S_3V
3
DS
P_A
PR
_S
PI_
CS
DS
P_V
T_S
PI_
SC
S_3V
3D
SP
_A
PR
_S
PI_
CLK
DS
P_A
PR
_S
PI_
MO
SI
DS
P_A
PR
_S
PI_
MIS
O
DS
P_A
PR
_S
PI_
MIS
OD
SP
_V
T_S
PI_
SD
O_1V
8
DS
P_V
T_W
AK
EU
P_3V
3
DB
MD
_IN
T_1V
8
DS
P_A
PR
_I2
S_D
O_3V
3D
SP
_A
PR
_I2
S_LR
CK
_3V
3D
SP
_A
PR
_I2
S_B
CLK
_3V
3
DS
P_V
T_I2
S_B
CLK
_1V
8D
SP
_V
T_I2
S_LR
CK
_1V
8
DS
P_V
T_I2
S_D
I_3V
3D
SP
_V
T_I2
S_D
I_1V
8
DS
P_A
PR
_I2
S_B
CLK
_3V
3
DS
P_V
T_I2
S_D
I_1V
8
DS
P_A
PR
_I2
S_LR
CK
_3V
3
DS
P_A
PR
_I2
S_B
CLK
_3V
3D
SP
_A
PR
_I2
S_LR
CK
_3V
3D
SP
_A
PR
_I2
S_D
O_3V
3
DS
P_V
T_I2
S_D
I_3V
3
DB
MD
_IN
T_3V
3
DS
P_V
T_S
PI_
SC
S_1V
8
DS
P_V
T_I2
S_LevS
hift
_E
N_L
DS
P_V
T_I2
S_LevS
hift
_E
N_L
DS
P_V
T_W
AK
EU
P_3V
3D
SP
_A
PR
_W
AK
EU
P_3V
3
DS
P_V
T_I2
S_D
I_3V
3
AP
R_LD
O_IN
CR
YS
TA
L_D
SP
_M
AS
TE
R_C
LK
DB
MD
_IN
T_3V
3
DS
P_D
M0_D
AT
AD
SP
_D
M0_C
LK
DS
P_D
M1_D
AT
AD
SP
_D
M1_C
LK
DS
P_D
M0_D
AT
AD
SP
_D
M0_C
LK
AP
R_LD
O_IN
CR
YS
TA
L_D
SP
_M
AS
TE
R_C
LK
DSP_VDD33_EN
DS
P_V
CC
A_1V
8
DS
P_G
ND
DS
P_V
DD
_IO
2_1V
8
DS
P_G
ND
DS
P_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_V
DD
_IO
1_3V
3
DS
P_V
T_C
OR
E_1V
1
DS
P_G
ND
DS
P_A
PR
_C
OR
E_1V
2
DS
P_G
ND
DS
P_A
PR
_C
OR
E_1V
2D
SP
_V
T_C
OR
E_1V
1
DS
P_G
ND
DS
P_G
ND
DS
P_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_V
DD
_IO
2_1V
8D
SP
_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DG
ND
VD
D33
DS
P_V
DD
_IO
2_1V
8D
SP
_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
GN
D
DS
P_V
DD
_IO
1_3V
3D
SP
_G
ND
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
2_1V
8D
SP
_V
T_C
OR
E_1V
1
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_V
DD
_IO
1_3V
3D
SP
_1V
8
DS
P_G
ND
DS
P_G
ND
DS
P_V
CC
A_1V
8
DS
P_V
DD
_IO
2_1V
8
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
VB
US
VD
D33
DS
P_V
DD
_IO
1_3V
3
DS
P_V
CC
A_1V
8
DS
P_G
ND
DS
P_V
DD
_IO
2_1V
8
DS
P_G
ND
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
2_1V
8
DS
P_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DG
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_G
ND
DS
P_V
DD
_IO
1_3V
3
DS
P_G
ND
DS
P_V
CC
_IN
DS
P_V
CC
_IN
GP
IO0_D
SP
_M
AS
TE
R_C
LK
2
DS
P_V
T_R
ST
N_3V
32
DS
P_A
PR
_R
ST
N_3V
32
DS
P_A
PR
_S
PI_
CS
2D
SP
_V
T_S
PI_
SC
S_3V
32
DS
P_A
PR
_S
PI_
CLK
2D
SP
_A
PR
_S
PI_
MO
SI
2
DS
P_A
PR
_S
PI_
MIS
O2
DS
P_A
PR
_I2
S_B
CLK
_3V
32
DS
P_A
PR
_I2
S_LR
CK
_3V
32
DS
P_A
PR
_I2
S_D
O_3V
32
DS
P_V
T_I2
S_D
I_3V
32
DB
MD
_IN
T_3V
32
DS
P_V
T_I2
S_LevS
hift
_E
N_L
2
DS
P_V
T_W
AK
EU
P_3V
32
DS
P_A
PR
_W
AK
EU
P_3V
32
DS
P_D
M0_C
LK
5
DS
P_D
M0_D
AT
A5
DS
P_D
M1_C
LK
5
DS
P_D
M1_D
AT
A5
Titl
e
Siz
eD
ocu
ment
Num
ber
Re
v
Da
te:
Sh
ee
to
f
<03_D
SP
>V
3.1
<E
SP
32-L
yraT
D-D
SP
G_A
>
C
35
Thurs
day,
Febru
ary
14, 2019
Titl
e
Siz
eD
ocu
ment
Num
ber
Re
v
Da
te:
Sh
ee
to
f
<03_D
SP
>V
3.1
<E
SP
32-L
yraT
D-D
SP
G_A
>
C
35
Thurs
day,
Febru
ary
14, 2019
Titl
e
Siz
eD
ocu
ment
Num
ber
Re
v
Da
te:
Sh
ee
to
f
<03_D
SP
>V
3.1
<E
SP
32-L
yraT
D-D
SP
G_A
>
C
35
Thurs
day,
Febru
ary
14, 2019
R73
10K
(1%
)R46
10K
(1%
)(N
C)
U4
SG
50
32
CA
N 2
4.5
76
00
0M
-TJG
A3
VD
D4
OU
T3
GN
D2
NC
/3-S
T1
R82
10K
(1%
)(N
C)
R41
0R
(1%
)
R286 680K(1%)(NC)
R56
2.2
K(1
%)
C35
10pF
/50V
(5%
)
R80
10K
(1%
)
C33 1uF/16V(10%)(NC)
C40 1uF/16V(10%)
R52
10K
(1%
)(N
C)
U5
DB
MD
5P
VT_VDD_CORE_11
VDD_IO2_12
VCCA_13
VT
_M
IC_IN
4
VCCA_25
VT
_M
IC_IP
6
VCCA_37
VT_VDD_CORE_28
APR_VDD_CORE_19
AP
R_T
DM
0_S
CLK
10
AP
R_T
DM
0_R
XD
11
APR_VDD_CORE_212
AP
R_T
DM
0_T
XD
13
AP
R_T
DM
0_F
SY
NC
14
AP
R_T
DM
2_S
CLK
15
AP
R_T
DM
2_F
SY
NC
16
AP
R_T
DM
2_T
XD
17
VDD_IO2_218
AP
R_T
DM
2_R
XD
19
VDD_IO1_120
AP
R_M
AS
TE
R_C
LK
21
AP
R_IIC
_S
CL
22
AP
R_IIC
_S
DA
23
AP
R_T
DM
3_T
XD
24
AP
R_T
DM
3_R
XD
25
AP
R_T
DM
3_S
CLK
26
AP
R_T
DM
3_F
SY
NC
27
AP
R_T
DM
1_T
XD
28
VDD_IO1_229
AP
R_T
DM
1_R
XD
30
APR_VDD_CORE_331
AP
R_T
DM
1_S
CLK
32
AP
R_T
DM
1_F
SY
NC
33
APR_JTAG_RTCK34
APR_JTAG_TDI35
APR_JTAG_TMS36
APR_JTAG_TCK37
APR_JTAG_TDO38
APR_VDD_CORE_439
AP
R_R
ST
N40
AP
R_U
AR
T_R
XD
41
AP
R_U
AR
T_T
XD
42
AP
R_W
AK
EU
P43
VDD_IO1_344
AP
R_D
M1_D
AT
A45
AP
R_D
M1_C
LK
46
AP
R_S
PI_
SD
I47
AP
R_S
PI_
SC
K48
AP
R_S
PI_
SD
O49
AP
R_S
PI_
SC
S50
APR_VDD_CORE_551
AP
R_A
N_R
EF
52
VCCA_453
AP
R_M
IC_IP
54
AP
R_M
IC_IN
55
APR_LDO_OUT56
APR_LDO_IN57
VT
_G
PIO
20/T
DM
1_R
XD
58
VT
_G
PIO
9/D
M0_D
AT
A59
VT
_G
PIO
5/S
PI_
SD
I60
VT
_G
PO
4/S
PI_
SD
O61
VT
_R
ST
N62
NA163
NA264
NA365
VDD_IO2_366
VT_VDD_CORE_367
VT
_G
PIO
1/II2
_S
CL0
68
NA469
VT
_G
PIO
2/II2
_S
DA
070
NA571
VT
_G
PIO
18/U
AR
T0_R
XD
72
VT
_G
PIO
11/D
M1_D
AT
A73
VT
_G
PIO
13/T
DM
0_S
CLK
74
VT
_G
PO
0/T
DM
1_T
XD
75
VT
_G
PIO
12/D
M1_C
LK
76
VT
_G
PIO
14/T
DM
0_F
SY
NC
77
VT
_G
PIO
17/U
AR
T0_T
XD
78
VDD_IO2_479
VT
_G
PIO
19/T
DM
1_C
LK
80
VT
_G
PIO
6/S
PI_
CLK
81
VT
_G
PO
8/D
M0_C
LK
82
VT_VDD_CORE_483
VT
_G
PIO
7/S
PI_
SC
S84
VT
_G
PIO
10/T
DM
1_F
SY
NC
85
VT
_G
PIO
15/T
DM
0_R
XD
86
VT
_G
PIO
16/T
DM
0_T
XD
87
VT
_M
AS
TE
R_C
LK
88
Earth_PAD89
C12 10uF/10V(20%)(NC)
C27 0.1uF/50V(10%)
R57
0R
(1%
)(N
C)
R53
30.1
K(1
%)(
NC
)
R72
0R
(1%
)
C255 6.8pF/50V(±0.1pF)(NC)
R287 10K(1%)(NC)
R42
0R
(1%
)(N
C)
U8
TC
7S
PN
3125T
U
VC
CA
1
GN
D2
A1
3B
14
OE
5
VC
CB
6
C44 1uF/16V(10%)
R51
1.8
K(1
%)
R37
10K
(1%
)
C26 1uF/16V(10%)
R71
68K
(1%
)
C41 1uF/16V(10%)
C11 0.1uF/50V(10%)
C14 0.1uF/50V(10%)
R78
0R
(1%
)(N
C)
L2
3A
@120ohm
,25m
ohm
(NC
)
R50
2.2
K(1
%)
C30
0.1
uF
/50V
(10%
)
C16 0.1uF/50V(10%)
U6
RT
9043G
B@
400m
A(N
C)
EN
3
OU
T5
VIN
1
NR
/FB
4
GND2
C24 0.1uF/50V(10%)R39
0R
(1%
)
C19 0.1uF/50V(10%)
C15 0.1uF/50V(10%)
C17 1uF/16V(10%)
R38
51R
(1%
)
C256 22uF/10V(20%)(NC)
C29 0.1uF/50V(10%)(NC)
C45 1uF/16V(10%)
R70
0R
(1%
)
R112
10K
(1%
)
U10
TC
7S
PN
3125T
U
VC
CA
1
GN
D2
A1
3B
14
OE
5
VC
CB
6
TP
61
C43
0.1
uF
/50V
(10%
)
R279
0R
(1%
)
R77
10K
(1%
)
TP
10
1
TP
91
R83
10K
(1%
)(N
C)
R40
10R
(1%
)
C37
0.1uF/50V(10%)(NC)
R49
1.8
K(1
%)
C21 0.1uF/50V(10%)
C259 0.1uF/50V(10%)(NC)
R66
10K
(1%
)(N
C)
R114
0R
(1%
)
C23 1uF/16V(10%)
C34
15pF
/50V
(5%
)
C18 1uF/16V(10%)
C28 10uF/10V(20%)(NC)
C13 1uF/16V(10%)
R44
0R
(1%
)
TP
11
1
R43
56K
(1%
)
C22 0.1uF/50V(10%)
C42
0.1
uF
/50V
(10%
)
R47
52.3
K(1
%)(
NC
)
U16
RT
9043G
B@
400m
A
EN
3
OU
T5
VIN
1
NR
/FB
4
GND2
R48
2.2
K(1
%)
C25 0.1uF/50V(10%)
R45
68K
(1%
)
TP
12
1
C20 1uF/16V(10%)
C38
10uF/10V(20%)(NC)
R81
2.2
K(1
%)
IN
GND
EN
FB
LX
U20
SY
8089A
AA
C(N
C)
4
2
153
TP
71
C46
0.1
uF
/50V
(10%
)
R113
5.1
K(1
%)
C257
22uF/10V(20%)(NC)
R64
0R
(1%
)
TP
13
1
R61
1.8
K(1
%)
R62
1.8
K(1
%)
C39
10uF/10V(20%)(NC)
R28410K(1%)(NC)
Q3
L8050Q
LT
1G
C47
0.1
uF
/50V
(10%
)
U9
LD
39020D
TP
U11R
IN4
EN
3
GN
D2
OU
T1
TP
AD
5
C258
0.1uF/50V(10%)(NC)
R59
0R
(1%
)
R68
10K
(1%
)(N
C)
R65
0R
(1%
)
R75
10K
(1%
)(N
C)
C31
10uF
/10V
(20%
)
C36
10nF/50V(10%)(NC)
R60
2.2
K(1
%)
TP
5
1
R63
2.2
K(1
%)
TP
81
L11
2.2
uH
(20%
)@3A
(NC
)
R58
0R
(1%
)
R74
5.1
K(1
%)(
NC
)
C80
10nF/50V(10%)(NC)
C81 0.1uF/50V(10%)
R285150K(1%)(NC)
R76
10K
(1%
)
R69
56K
(1%
)
R67
10K
(1%
)(N
C)
C32 10uF/10V(20%)(NC)
R55
1.8
K(1
%)
R54
10K
(1%
)(N
C)
Espressif / 12 16Submit Documentation Feedback
2020.07
Appendix A
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
ES_I2S_DSDIN:IO26
ES_I2S_LRCK:IO25
ES_I2S_SCLK:IO5
ES_I2S_MCLK:IO0
PA_CTRL:IO22
PA:
Spea
ker:
Power
Supply for
Codec:
Code
c:
Phone
Jack:
Notes:
1.Vout=1.20*(1+R1/R2)=3.296V;
R1=52.3K,R2=30.1K are recommended for better performance.
R1
R2
DVDD discharge resistance
Please place these
compenonts near IC pins
on the same layer,
NO VIAS!
Defualt I2C slave address:
0010 0000=0x20
Notes˖
1.When EarPhone NO plug in,EarPhone_Detect keep low,thus Q13 off,and then B=H,
AND_PA_CTRL will follow the status of PA_CTRL ;
2.When EarPhone plug in,EarPhone_Detect swith to high,thus Q13 ON,and then B=L,
AND_PA_CTRL will keep low ;
PA
_CTR
L
PA
_CTR
L
AN
D_P
A_C
TRL
AN
D_P
A_C
TRL
PA
_IN
L+P
A_I
NL-
PA
_OU
TL+
PA
_OU
TL-
PA
_PV
DD
1
ES
_I2S
_DS
DIN
ES
_I2S
_LR
CK
ES
_I2S
_SC
LKE
S_I
2S_M
CLK
ES
_I2S
_DS
DIN
IO18
_I2C
_SD
AIO
23_I
2C_S
CL
ES
8388
_CE
R_E
S83
88_S
DA
R_E
S83
88_S
CL
ES
8388
_AD
CV
RE
FE
S83
88_V
MID
ES
8388
_VR
EF
C_R
OU
T1
C_L
OU
T1
RO
UT1
LOU
T1
DA
C_A
OU
TLN
RO
UT2
C_L
OU
T2
C_R
OU
T2
ES
_I2S
_MC
LKE
S_I
2S_S
CLK
ES
_I2S
_LR
CK
ES
8388
_CE
IO18
_I2C
_SD
AIO
23_I
2C_S
CL
Ear
Pho
ne_D
etec
t
Ear
Pho
ne_D
etec
t
LOU
T1
RO
UT1
DA
C_A
OU
TLP
PA
_IN
L-D
AC
_AO
UTL
N
PA
_IN
L+D
AC
_AO
UTL
PP
A_O
UTL
+
PA
_OU
TL-
AG
ND
AG
ND
Cod
ec_V
CC
33
AG
ND
AG
ND
AG
ND
AG
ND
AG
ND
GN
D
VB
US
AG
ND
Cod
ec_V
CC
33
AG
ND
VB
US
AG
ND
AG
ND
AG
ND
Cod
ec_V
CC
33
AG
ND
Cod
ec_V
CC
33
AG
ND
AG
ND
Cod
ec_V
CC
33
AG
ND
AG
ND
Cod
ec_V
CC
33C
odec
_VC
C33
AG
ND
AG
ND
AG
ND
AG
ND
AG
ND
AG
ND
Cod
ec_V
CC
33
AG
ND
AG
ND
AG
ND
AG
ND
AG
ND
Cod
ec_V
CC
33
AG
ND
AG
ND
AG
ND
AG
ND
ES
_I2S
_MC
LK2
ES
_I2S
_SC
LK2
ES
_I2S
_LR
CK
2E
S_I
2S_D
SD
IN2
PA
_CTR
L2
IO18
_I2C
_SD
A2,
5IO
23_I
2C_S
CL
2,5
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<04_
Cod
ec&
PA
>V
3.1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
45
Frid
ay, M
arch
15,
201
9
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<04_
Cod
ec&
PA
>V
3.1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
45
Frid
ay, M
arch
15,
201
9
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<04_
Cod
ec&
PA
>V
3.1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
45
Frid
ay, M
arch
15,
201
9
L33A
@12
0ohm
,25m
ohm
R12
110
0R(1
%)
R97
100K
(1%
)
C95
10uF
/10V
(20%
)
J2 A20
01W
R-S
-2P
TP14
1
R90
10K
(1%
)(N
C)
C91
22uF
/10V
(20%
)
C24
6
0.1u
F/50
V(1
0%)
U14
SN
74LV
C1G
08D
BV
R
A1
B2
GN
D3
VC
C5
Y4
C24
9
10uF
/10V
(20%
)
C243 22pF/50V(5%)
R98
100K
(1%
)
C89
0.1u
F/50
V(1
0%)
C52 10nF/50V(10%)(NC)
C24
5
10uF
/10V
(20%
)
C21
922
uF/1
0V(2
0%)
C86 22pF/50V(5%)
R12
733
R(1
%)
C72
33pF
/50V
(5%
)
R91
30K
(1%
)
L70R
(1%
)
C67
1uF/
16V
(10%
)
R89
52.3
K(1
%)
C69
0.1u
F/50
V(1
0%)
C93
0.1u
F/50
V(1
0%)
C242 22pF/50V(5%)
C23
10.
1uF/
50V
(10%
)(N
C)
C92
0.1u
F/50
V(1
0%)
U11
RT9
043G
B@
400m
A
EN
3
OU
T5
VIN
1
NR
/FB
4
GND2
PJ-
393-
A
J11
1
22
33
44
55
66
77
88
R12
010
0R(1
%)
R96
10K
(1%
)
C71
0.1u
F/50
V(1
0%)
C74 330pF/50V(10%)(NC)
C53 0.1uF/50V(10%)
C70
33pF
/50V
(5%
)
C68
0.1u
F/50
V(1
0%)
R122 2K(1%)(NC)
C22
90.
1uF/
50V
(10%
)(N
C)
C75
330p
F/50
V(1
0%)(
NC
)
R10
10R
(1%
)
C23
20.
1uF/
50V
(10%
)(N
C)
R21
8
10K
(1%
)
R99
30K
(1%
)
R12
633
R(1
%)
+C
66
10uF
/16V
(20%
)
Q13
LBS
S13
8LT1
G
C24
7
10uF
/10V
(20%
)
R88
10K
(1%
)
R12
84.
7R(1
%)
C90
22uF
/10V
(20%
)
C65
10uF
/25V
(20%
)(N
C)
C24
8
0.1u
F/50
V(1
0%)
C64
1uF/
16V
(10%
)
R123 2K(1%)(NC)
L53A
@12
0ohm
,25m
ohm
R21
7
10K
(1%
)(N
C)
C88
0.1u
F/50
V(1
0%)
C24
4
0.1u
F/50
V(1
0%)
R23
733
R(1
%)
C241 22pF/50V(5%)
C21
822
uF/1
0V(2
0%)
R12
4
3.3K
(1%
)(N
C)
U18
ES
8388
PV
DD
3D
VD
D2
DG
ND
4
PG
ND
29
CC
LK28
CD
AT
A27
CE
26
MC
LK1
SC
LK5
LRC
K7
DS
DIN
6
AS
DO
UT
8
LIN
124
RIN
123
LIN
222
RIN
221
HP
VD
D16
AV
DD
17
AG
ND
18
HP
GN
D13
LOU
T1
12
RO
UT
111
LOU
T2
15
RO
UT
214
VM
ID20
AD
CV
RE
F19
VR
EF
10
NC
19
NC
225
R23
833
R(1
%)
C94
10uF
/10V
(20%
)
R12
510
0R(1
%)
U13
NS
4150
CT
RL
1
Byp
ass
2
IN+
3
IN-
4O
UT
-5
VC
C6
GN
D7
OU
T+
8
R10
030
K(1
%)
C73
330p
F/50
V(1
0%)(
NC
)
C57 10uF/10V(20%)
C54 10uF/10V(20%)
C23
00.
1uF/
50V
(10%
)(N
C)
C87 22pF/50V(5%)
L60R
(1%
)
Espressif / 13 16Submit Documentation Feedback
2020.07
Appendix A
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
USB: Power & Communication
Reserved for Auto-prog:
Aut
o pr
ogra
m
DT
R R
TS
-->E
N
IO0
IO
2 1
1
1
1
1 0
0
1
1
1 1
0
0
1
1 0
1
1
0
0
USB <-> UART:
FPC Connector/Reserved:
FPC 0.5MM 16Pins
To E
SP32 RXD0
To E
SP32 TXD0
Power For LED:
Notes:
1.Vout=1.20*(1+R1/R2)=3.296V;
R1=52.3K,R2=30.1K are recommended for better performance.
2.Defalut VBUS power for LED , thus save one LDO .
R1
R2
MINI DIN Connector:
System LED:
Function Keys:
2.42V
1.11V
System LED = H
L̍ED light ON;
System LED = L
L̍ED light OFF;
US
B_D
PU
SB
_DN
RST#
ACTIVE
RTS
DTR
RX
D0
TXD
0
DTR
RTS
EN
_Aut
o
IO0_
Aut
o
IO2_
Aut
o
IO2_
Aut
oIO
0_A
uto
EN
_Aut
oB
oot_
IO0
Boo
t_E
N
Boo
t_IO
2
D-
US
B_D
ND
+U
SB
_DP
AU
X_U
SB
_PO
WE
R
RX
D0
TXD
0
Boo
t_IO
0B
oot_
EN
Boo
t_IO
2
IO18
_I2C
_SD
AIO
23_I
2C_S
CL
But
ton_
Arr
ay_A
DC
DS
P_D
M0_
DA
TAD
SP
_DM
0_C
LK
DS
P_D
M1_
DA
TAD
SP
_DM
1_C
LK
IO18
_I2C
_SD
AIO
23_I
2C_S
CL
But
ton_
Arr
ay_A
DC
DS
P_D
M0_
CLK
DS
P_D
M0_
DA
TA
DS
P_D
M1_
CLK
DS
P_D
M1_
DA
TA
Sys
tem
_LE
D
Sys
tem
_LE
D
But
ton_
Arr
ay_A
DC
DS
P_D
M0_
CLK
DS
P_D
M0_
DA
TAD
SP
_DM
1_D
ATA
DS
P_D
M1_
CLK
CN
N_L
ED
GN
D
GN
DV
DD
33
GN
D
GN
D
GN
D
GN
D
VB
US
0
VD
D33
GN
D
GN
D
VB
US
GN
DG
ND
VB
US
GN
DG
ND
GN
DG
ND
GN
DG
ND
GN
D
VB
US
LED
_VC
C
GN
D
GN
DD
SP
_VD
D_I
O2_
1V8
GN
D
GN
D
LED
_VC
C
GN
D
VB
US
0
GN
DG
ND
VD
D33
GN
DG
ND
DS
P_G
ND
DS
P_G
ND
DS
P_V
DD
_IO
2_1V
8
IO18
_I2C
_SD
A2,
4
RX
D0
2TX
D0
2
Boo
t_E
N2
Boo
t_IO
02
Boo
t_IO
22
IO23
_I2C
_SC
L2,
4
But
ton_
Arr
ay_A
DC
2
DS
P_D
M0_
DA
TA3
DS
P_D
M0_
CLK
3
DS
P_D
M1_
DA
TA3
DS
P_D
M1_
CLK
3
Sys
tem
_LE
D2
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<05_
Pow
ers&
UA
RT>
V3.
1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
55
Thur
sday
, Feb
ruar
y 14
, 201
9
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<05_
Pow
ers&
UA
RT>
V3.
1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
55
Thur
sday
, Feb
ruar
y 14
, 201
9
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Dat
e:S
heet
of
<05_
Pow
ers&
UA
RT>
V3.
1
<ES
P32
-Lyr
aTD
-DS
PG
_A>
C
55
Thur
sday
, Feb
ruar
y 14
, 201
9
R10
710
K(1
%)(
NC
)
D1
1N58
19H
W-7
-F(N
C)
C84 10uF/10V(20%)(NC)
D5
1N58
19H
W-7
-F
D3
LES
D5D
5.0C
T1G
C76 22uF
/10V
(20%
)
C82 10uF/10V(20%)(NC)
D6
LES
D5D
5.0C
T1G
D4 LE
SD
5D5.
0CT1
G
R10
522
.1K
(1%
)
C85 10nF/50V(10%)(NC)
D2
LES
D5D
5.0C
T1G
SW
5
K2-
1109
SP
-B4S
A-0
1
11
22
33
44
21
3
56
4
J6 MD
2-60
ST
113355
224466
77
88
R10
6
47.5
K(1
%)
R11
7
10K
(1%
)(N
C)
SW
6
K2-
1109
SP
-B4S
A-0
1
11
22
33
44
C78 10uF/10V(20%)(NC)
R10
410
K(1
%)(
NC
)
R27
31K
(1%
)
C79 1uF/16V(10%)
Q6
L805
0QLT
1G(N
C)
R11
8
10K
(1%
)(N
C)
R11
5
30.1
K(1
%)(
NC
)
R10
80R
(1%
)Q
11LB
SS
138L
T1G
J5
AFC
01-S
16FC
C-0
0
44
33
22
11
1717
1818
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
Q4
L805
0QLT
1G
R10
90R
(1%
)
J3
Mic
ro U
SB
5P
Fem
ale
VB
US
1
D-
2
D+
3
GN
D5
NC
4
GN
D6
GN
D7
GN
D8
GN
D9
R27
4
10K
(1%
)
J4
Mic
ro U
SB
5P
Fem
ale
VB
US
1
D-
2
D+
3
GN
D5
NC
4
GN
D6
GN
D7
GN
D8
GN
D9
U15
CP
2102
N-A
01-G
QFN
28
DC
D1
RI
2
GN
D3
D+
4
D-
5
VD
D6
RE
GIN
7
VBUS8
RST9
NC110
SUSPEND11
SUSPEND12
NC213
NC314
NC
415
NC
516
NC
617
NC
718
NC
819
NC
920
NC
1021
NC1122 CTS23 RTS24 RXD25 TXD26 DSR27 DTR28 PGND29
C83 0.1uF/50V(10%)(NC)
R10
210
K(1
%)
R27
7
30K
(1%
)
R11
10R
(1%
)
R25
45.
1K(1
%)
L83A
@12
0ohm
,25m
ohm
Q5
L805
0QLT
1G
U17
RT9
043G
B@
400m
A(N
C)
EN
3
OU
T5
VIN
1
NR
/FB
4
GND2
D39
GR
EE
N L
ED
R11
01K
(1%
)
R10
310
K(1
%)
R11
6
52.3
K(1
%)(
NC
)
C77
1uF/
16V
(10%
)
R11
90R
(1%
) R27
8
5.1K
(1%
)
Espressif / 14 16Submit Documentation Feedback
2020.07
Appendix A
A.2. Sub Board (B)
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
AD=0:
I2C
slave
address:0'b
0111 100x;
2.42
VVO
L+1.
8V1.
2V0.
6VMu
teVO
L-Ac
tion
LED
Driver:
DMIC A
rray:
KEY
Array:
Notes˖
1. Defaultw̍e use VCC(power coming from USB or Battery) to power LED
Driver and LEDs ,thus we can saved one Power Regulator .
2. I2C of LED Driver is pull-up on the main-board by VDD3V3 .
3. Attention , DMIC_CLK/DAT is derived from DSP , and it is 1.8V .
4. Pull-up resistor for Button_Array_ADC is populated on main-board .
Location H
oles:
FPC
0.5MM
16Pins
DM
IC0_D
AT
DM
IC0_C
LK
DM
IC0_D
AT
DM
IC0_C
LK
DM
IC1_C
LK
DM
IC1_D
AT
Button_A
rray_A
DC
IO18_I2
C_S
DA
IO23_I2
C_S
CL
DM
IC0_D
AT
DM
IC0_C
LK
DM
IC1_D
AT
DM
IC1_C
LK
Button_A
rray_A
DC
IO18_I2
C_S
DA
IO23_I2
C_S
CL
LE
D_S
CL
LE
D_S
DA
LE
D_V
CC
GN
D
DM
IC_V
CC
DM
IC_V
CC
GN
D
GN
D
GN
D
DM
IC_V
CC
DM
IC_V
CC
GN
D
GN
D
GN
D
DM
IC_V
CC
DM
IC_V
CC
GN
D
GN
D
GN
D
GN
DG
ND
GN
DG
ND
GN
D
GN
D
GN
D
GN
D
LE
D_V
CC
GN
D
DM
IC_V
CC
GN
D
GN
D
GN
D
LE
D_V
CC
GN
DG
ND
GN
D
GN
D
LE
D_V
CC
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Da
te
:S
he
et
of
<02_D
MIC
_LE
D_K
EY
>V
1.1
<<
ES
P32-LyraT
D-D
SP
G_B
>>
C
22
Thursday, M
arch 0
7, 2019
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Da
te
:S
he
et
of
<02_D
MIC
_LE
D_K
EY
>V
1.1
<<
ES
P32-LyraT
D-D
SP
G_B
>>
C
22
Thursday, M
arch 0
7, 2019
Title
Siz
eD
ocum
ent
Num
ber
Re
v
Da
te
:S
he
et
of
<02_D
MIC
_LE
D_K
EY
>V
1.1
<<
ES
P32-LyraT
D-D
SP
G_B
>>
C
22
Thursday, M
arch 0
7, 2019
R11
5.1
K(1%
)
R28
5.1
K(1%
)
R7
5.1
K(1%
)
R52
0R
(1%
)
R22
5.1
K(1%
)
R8
10K
(1%
)
R19
5.1
K(1%
)
R14
5.1
K(1%
)
R57
5.1
K(1%
)
C5 22pF/50V(5%)
R30
5.1
K(1%
)
D9
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R46
10K
(1%
)
D1
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
C9
0.1
uF
/50V
(10%
)
R43
10K
(1%
)
D8
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R32
5.1
K(1%
)
R5
5.1
K(1%
)
U4
NS
M0418D
T
DA
TA
1
CLK
2
4
VD
D
3
SE
LE
CT
GN
D1
5
GN
D2
6
GN
D3
7
GN
D4
8
R45
10K
(1%
)(N
C)
C6 22pF/50V(5%)
D10
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R27
5.1
K(1%
)
R56
5.1
K(1%
)
ST
D1
M3-L5-3.5
R47
27.5
K(1%
)
D2
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
C1
10uF
/10V
(20%
)
C4
0.1
uF
/50V
(10%
)
R42
0R
(1%
)
R25
5.1
K(1%
)
D4
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R37
5.1
K(1%
)
C3
0.1
uF
/50V
(10%
)
U2
NS
M0418D
T
DA
TA
1
CLK
2
4
VD
D
3
SE
LE
CT
GN
D1
5
GN
D2
6
GN
D3
7
GN
D4
8
D6
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
D3
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
SW
4
K2-1109S
P-B
4S
A-01
11
22
33
44
SW
3
K2-1109S
P-B
4S
A-01
11
22
33
44
J1
AF
C01-S
16F
CC
-00
44
33
22
11
1717
1818
55
66
77
88
99
10
10
11
11
12
12
13
13
14
14
15
15
16
16
SW
2
K2-1109S
P-B
4S
A-01
11
22
33
44
R50
2.2
K(1%
)
ST
D3
M3-L5-3.5
R15
3.3
K(1%
)
R51
0R
(1%
)
C8
0.1
uF
/50V
(10%
)
R4
5.1
K(1%
)
R38
5.1
K(1%
)
R16
10K
(1%
)
R26
5.1
K(1%
)
R6
5.1
K(1%
)
R21
5.1
K(1%
)
R18
5.1
K(1%
)
U3
NS
M0418D
T
DA
TA
1
CLK
2
4
VD
D
3
SE
LE
CT
GN
D1
5
GN
D2
6
GN
D3
7
GN
D4
8
R13
5.1
K(1%
)
R9
5.1
K(1%
)
R10
0R
(1%
)
R31
5.1
K(1%
)
SW
1
K2-1109S
P-B
4S
A-01
11
22
33
44
R41
0R
(1%
)
R35
5.1
K(1%
)
C7
0.1
uF
/50V
(10%
)
R44
10K
(1%
)(N
C)
R40
0R
(1%
)
U1
IS31F
L3236A
OU
T3
1
OU
T4
2
OU
T5
3
OU
T6
4
OU
T7
5
OU
T8
6
OU
T9
7
OU
T10
8
OU
T11
9
OU
T12
10
OU
T13
11
OU
T14
12
OU
T15
13
OU
T16
14
OU
T17
15
OU
T18
16
GN
D1
17
OU
T19
18
OU
T20
19
OU
T21
20
OU
T22
21
OU
T23
22
OU
T24
23
OU
T25
24
OU
T26
25
OU
T27
26
OU
T28
27
OU
T29
28
OU
T30
29
OU
T31
30
OU
T32
31
OU
T33
32
OU
T34
33
OU
T35
34
OU
T36
35
OU
T1
43
OU
T2
44
SC
L42
SD
A41
R_E
XT
40
GN
D2
39
VC
C38
AD
37
SD
B36
PG
ND
45
R34
5.1
K(1%
)
D12
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R49
5.7
6K
(1%
)
ST
D2
M3-L5-3.5
R24
5.1
K(1%
)
R55
5.1
K(1%
)
R36
5.1
K(1%
)
R33
5.1
K(1%
)
D5
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
C2
1uF
/16V
(10%
)
R54
10K
(1%
)(N
C)
D11
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R39
0R
(1%
)
R53
10K
(1%
)
R48
12K
(1%
)
D7
19-237A
BH
R6G
HC
-A
012T
G2
R1
B4
CV
3
R29
5.1
K(1%
)
R2
5.1
K(1%
)
R23
5.1
K(1%
)
R20
5.1
K(1%
)
ST
D4
M3-L5-3.5
R17
5.1
K(1%
)
R1
5.1
K(1%
)
R12
5.1
K(1%
)
R3
0R
(1%
)
Espressif / 15 16Submit Documentation Feedback
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