Espressif Systems ESP32-LyraTD-DSPG User manual
www.espressif.com
ESP32-LyraTD-DSPG
User Guide
Version 1.0
Espressif Systems
Copyright © 2019
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
2019.07
V1.0
Initial release.
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...........................................................................................................................
!
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
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1. Overview
Provides power supply to the whole system. It is recommended that the system be
connected to a power adapter for sufficient current supply.
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
E8388 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
D D
C C
B B
A A
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:IFSC1515AHER2R2M01Note:
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
GPIO13
A_SHD/SD2
A_SWP/SD3
A_SCS/CMD
A_SCK/CLK
A_SDO/SD0
A_SDI/SD1
GPIO15
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
VDD33_EN
DGND
VDD33
DGND
DGND GND
DGND
VDD33
DGNDDGND
VBUS
DGND DGND
ESP_3V3
DGND
ESP_3V3
DGND
VDD33
GND
GND
GND
GND GND
GND
DGND DGNDDGNDDGND
VDD33
DGND
VDD33_IN
VDD33_IN
TXD05
Boot_EN
5
Boot_IO0
5
Boot_IO2
5
PA_CTRL4
GPIO0_DSP_MASTER_CLK
3
DSP_VT_RSTN_3V3
3
DSP_APR_RSTN_3V3
3
DBMD_INT_3V33
DSP_APR_SPI_CS
3
DSP_VT_SPI_SCS_3V3
3
DSP_APR_SPI_CLK
3
DSP_APR_SPI_MOSI
3
DSP_APR_SPI_MISO3
DSP_APR_I2S_BCLK_3V3
3
DSP_APR_I2S_LRCK_3V3
3
DSP_APR_I2S_DO_3V3
3
DSP_VT_I2S_DI_3V33
DSP_VT_WAKEUP_3V33
DSP_APR_WAKEUP_3V33
ES_I2S_DSDIN4
ES_I2S_LRCK4
ES_I2S_SCLK4
ES_I2S_MCLK4
DSP_VT_I2S_LevShift_EN_L3
RXD05
Button_Array_ADC
5
IO23_I2C_SCL4,5
IO18_I2C_SDA 4,5
System_LED5
Title
Size Document Number Rev
Date: Sheet of
<02_ESP32_MCU> V3.1
<ESP32-LyraTD-DSPG_A>
C
25Thursday, February 14, 2019
Title
Size Document Number Rev
Date: Sheet of
<02_ESP32_MCU> V3.1
<ESP32-LyraTD-DSPG_A>
C
25Thursday, February 14, 2019
Title
Size Document Number Rev
Date: Sheet of
<02_ESP32_MCU> V3.1
<ESP32-LyraTD-DSPG_A>
C
25Thursday, 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
GND
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
GND2
15
IO13
16
SD2
17
SD3
18
CMD
19
CLK
20
SD0
21
SD1
22
IO15
23
IO2
24
P_GND 39
SW7
K2-1109SP-B4SA-01
1
122
33
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
122
33
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
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Appendix A
!!
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
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:IFSC1515AHER2 R2M01
Note:
1.Vout = 0.6*(1+R1/R2);
DSP_DM1_DATA
DSP_DM1_CLK
MASTER_STRAP
DSP_APR_SPI_MOSI
DSP_APR_SPI_MISO
DSP_APR_SPI_CLK
DSP_APR_SPI_CS
DSP_APR_WAKEUP_3V3
DSP_APR_UART_TXD
DSP_APR_UART_RXD
DSP_VT_WAKEUP_1V8
DSP_VT_UART_TX
DBMD_INT_1V8
DSP_VT_MASTER_CLK_1V8
DSP_APR_MASTER_CLK
GPIO0_DSP_MASTER_CLK
GPIO0_DSP_MASTER_CLK
CRYSTAL_DSP_MASTER_CLK
DSP_VT_RSTN_1V8DSP_VT_RSTN_3V3
DSP_VT_RSTN_3V3
DSP_APR_RSTN_3V3
DSP_APR_RSTN_3V3
DSP_VT_SPI_SDO_1V8
DSP_VT_SPI_CLK_1V8
DSP_VT_SPI_SDI_1V8
DSP_APR_SPI_CLK
DSP_APR_SPI_MOSI
DSP_VT_SPI_SCS_1V8DSP_VT_SPI_SCS_3V3
DSP_APR_SPI_CS
DSP_VT_SPI_SCS_3V3
DSP_APR_SPI_CLK
DSP_APR_SPI_MOSI
DSP_APR_SPI_MISO
DSP_APR_SPI_MISO
DSP_VT_SPI_SDO_1V8
DSP_VT_WAKEUP_3V3
DBMD_INT_1V8
DSP_APR_I2S_DO_3V3
DSP_APR_I2S_LRCK_3V3
DSP_APR_I2S_BCLK_3V3
DSP_VT_I2S_BCLK_1V8
DSP_VT_I2S_LRCK_1V8
DSP_VT_I2S_DI_3V3
DSP_VT_I2S_DI_1V8
DSP_APR_I2S_BCLK_3V3
DSP_VT_I2S_DI_1V8
DSP_APR_I2S_LRCK_3V3
DSP_APR_I2S_BCLK_3V3
DSP_APR_I2S_LRCK_3V3
DSP_APR_I2S_DO_3V3
DSP_VT_I2S_DI_3V3
DBMD_INT_3V3
DSP_VT_SPI_SCS_1V8
DSP_VT_I2S_LevShift_EN_L
DSP_VT_I2S_LevShift_EN_L
DSP_VT_WAKEUP_3V3
DSP_APR_WAKEUP_3V3
DSP_VT_I2S_DI_3V3
APR_LDO_IN
CRYSTAL_DSP_MASTER_CLK
DBMD_INT_3V3
DSP_DM0_DATA
DSP_DM0_CLK
DSP_DM1_DATA
DSP_DM1_CLK
DSP_DM0_DATA
DSP_DM0_CLK
APR_LDO_IN
CRYSTAL_DSP_MASTER_CLK
DSP_VDD33_EN
DSP_VCCA_1V8
DSP_GND
DSP_VDD_IO2_1V8
DSP_GND
DSP_VDD_IO1_3V3
DSP_GND
DSP_VDD_IO1_3V3
DSP_VT_CORE_1V1
DSP_GND
DSP_APR_CORE_1V2
DSP_GND
DSP_APR_CORE_1V2 DSP_VT_CORE_1V1
DSP_GND
DSP_GND
DSP_VDD_IO1_3V3
DSP_GND
DSP_GND
DSP_GND
DSP_GND
DSP_GND
DSP_VDD_IO2_1V8DSP_VDD_IO1_3V3
DSP_GND DSP_GND
DSP_GND
DGND
VDD33
DSP_VDD_IO2_1V8DSP_VDD_IO1_3V3
DSP_GND DSP_GND
DSP_GND
DSP_GND
DSP_GND GND
DSP_VDD_IO1_3V3
DSP_GND
DSP_VDD_IO2_1V8
DSP_VDD_IO2_1V8
DSP_VDD_IO2_1V8
DSP_VDD_IO2_1V8
DSP_VDD_IO2_1V8 DSP_VT_CORE_1V1
DSP_GNDDSP_GND DSP_GND
DSP_VDD_IO1_3V3 DSP_1V8
DSP_GNDDSP_GND
DSP_VCCA_1V8
DSP_VDD_IO2_1V8
DSP_GND DSP_GND DSP_GNDDSP_GND DSP_GND
VBUS
VDD33 DSP_VDD_IO1_3V3
DSP_VCCA_1V8
DSP_GND
DSP_VDD_IO2_1V8
DSP_GND
DSP_VDD_IO2_1V8
DSP_VDD_IO2_1V8
DSP_VDD_IO1_3V3
DSP_GND
DSP_GND
DSP_GND DSP_GND
DSP_GND DGND
DSP_GND DSP_GNDDSP_GNDDSP_GND
DSP_VDD_IO1_3V3
DSP_GND
DSP_VCC_IN
DSP_VCC_IN
GPIO0_DSP_MASTER_CLK2
DSP_VT_RSTN_3V32
DSP_APR_RSTN_3V32
DSP_APR_SPI_CS2
DSP_VT_SPI_SCS_3V32
DSP_APR_SPI_CLK2
DSP_APR_SPI_MOSI2
DSP_APR_SPI_MISO
2
DSP_APR_I2S_BCLK_3V32
DSP_APR_I2S_LRCK_3V32
DSP_APR_I2S_DO_3V32
DSP_VT_I2S_DI_3V3
2
DBMD_INT_3V3
2
DSP_VT_I2S_LevShift_EN_L2
DSP_VT_WAKEUP_3V32
DSP_APR_WAKEUP_3V32
DSP_DM0_CLK
5
DSP_DM0_DATA
5
DSP_DM1_CLK
5
DSP_DM1_DATA
5
Titl e
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Date: Sheet of
<03_DSP> V3.1
<ESP32-LyraTD-DSPG_A>
C
35Thursday, February 14, 2019
Titl e
Size
Document Number Rev
Date: Sheet of
<03_DSP> V3.1
<ESP32-LyraTD-DSPG_A>
C
35Thursday, February 14, 2019
Titl e
Size
Document Number Rev
Date: Sheet of
<03_DSP> V3.1
<ESP32-LyraTD-DSPG_A>
C
35Thursday, February 14, 2019
R73
10K(1%)
R46
10K(1%)(NC)
U4
SG5032CAN 24.576000M-TJGA3
VDD
4
OUT
3GND 2
NC/3-ST 1
R82 10K(1%)(NC)
R41 0R(1%)
R286 680K(1%)(NC)
R56 2.2K(1%)
C35 10pF/50V(5%)
R80
10K(1%)
C33 1uF/16V(10%)(NC)
C40 1uF/16V(10%)
R52
10K(1%)(NC)
U5
DBMD5P
VT_VDD_CORE_1 1
VDD_IO2_1 2
VCCA_1 3
VT_MIC_IN 4
VCCA_2 5
VT_MIC_IP 6
VCCA_3 7
VT_VDD_CORE_2 8
APR_VDD_CORE_1 9
APR_TDM0_SCLK 10
APR_TDM0_RXD 11
APR_VDD_CORE_2 12
APR_TDM0_TXD 13
APR_TDM0_FSYNC 14
APR_TDM2_SCLK
15
APR_TDM2_FSYNC
16
APR_TDM2_TXD
17
VDD_IO2_2 18
APR_TDM2_RXD
19
VDD_IO1_1 20
APR_MASTER_CLK
21
APR_IIC_SCL
22
APR_IIC_SDA
23
APR_TDM3_TXD
24
APR_TDM3_RXD
25
APR_TDM3_SCLK
26 APR_TDM3_FSYNC
27
APR_TDM1_TXD 28
VDD_IO1_2 29
APR_TDM1_RXD 30
APR_VDD_CORE_3 31
APR_TDM1_SCLK 32
APR_TDM1_FSYNC 33
APR_JTAG_RTCK
34
APR_JTAG_TDI
35
APR_JTAG_TMS
36
APR_JTAG_TCK
37
APR_JTAG_TDO
38
APR_VDD_CORE_4 39
APR_RSTN
40
APR_UART_RXD
41 APR_UART_TXD
42 APR_WAKEUP
43
VDD_IO1_3 44
APR_DM1_DATA 45
APR_DM1_CLK 46
APR_SPI_SDI
47
APR_SPI_SCK
48
APR_SPI_SDO
49 APR_SPI_SCS
50
APR_VDD_CORE_5 51
APR_AN_REF 52
VCCA_4 53
APR_MIC_IP 54
APR_MIC_IN 55
APR_LDO_OUT 56
APR_LDO_IN 57
VT_GPIO20/TDM1_RXD 58
VT_GPIO9/DM0_DATA 59
VT_GPIO5/SPI_SDI
60
VT_GPO4/SPI_SDO
61
VT_RSTN
62
NA1
63
NA2
64
NA3
65
VDD_IO2_3 66
VT_VDD_CORE_3 67
VT_GPIO1/II2_SCL0
68
NA4
69
VT_GPIO2/II2_SDA0
70
NA5
71
VT_GPIO18/UART0_RXD
72
VT_GPIO11/DM1_DATA 73
VT_GPIO13/TDM0_SCLK
74
VT_GPO0/TDM1_TXD 75
VT_GPIO12/DM1_CLK 76
VT_GPIO14/TDM0_FSYNC
77
VT_GPIO17/UART0_TXD
78
VDD_IO2_4 79
VT_GPIO19/TDM1_CLK 80
VT_GPIO6/SPI_CLK
81
VT_GPO8/DM0_CLK 82
VT_VDD_CORE_4 83
VT_GPIO7/SPI_SCS
84
VT_GPIO10/TDM1_FSYNC 85
VT_GPIO15/TDM0_RXD
86 VT_GPIO16/TDM0_TXD
87
VT_MASTER_CLK
88
Earth_PAD
89
C12 10uF/10V(20%)(NC)
C27 0.1uF/50V(10%)
R57 0R(1%)(NC)
R53
30.1K(1%)(NC)
R72 0R(1%)
C255 6.8pF/50V(±0.1pF)(NC)
R287 10K(1%)(NC)
R42 0R(1%)(NC)
U8
TC7SPN3125TU
VCCA 1
GND 2
A1 3
B1
4
OE
5
VCCB
6
C44 1uF/16V(10%)
R51 1.8K(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%)(NC)
L2 3A@120ohm,25mohm(NC)
R50 2.2K(1%)
C30
0.1uF/50V(10%)
C16 0.1uF/50V(10%)
U6 RT9043GB@400mA(NC)
EN
3
OUT 5
VIN
1
NR/FB 4
GND
2
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
TC7SPN3125TU
VCCA 1
GND 2
A1 3
B1
4
OE
5
VCCB
6
TP6
1
C43 0.1uF/50V(10%)
R279 0R(1%)
R77 10K(1%)
TP10
1
TP9
1
R83 10K(1%)(NC)
R40 10R(1%)
C37
0.1uF/50V(10%)(NC)
R49 1.8K(1%)
C21 0.1uF/50V(10%)
C259 0.1uF/50V(10%)(NC)
R66 10K(1%)(NC)
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%)
TP11
1
R43 56K(1%)
C22 0.1uF/50V(10%)
C42 0.1uF/50V(10%)
R47
52.3K(1%)(NC)
U16 RT9043GB@400mA
EN
3
OUT 5
VIN
1
NR/FB 4
GND
2
R48 2.2K(1%)
C25 0.1uF/50V(10%)
R45 68K(1%)
TP12
1
C20 1uF/16V(10%)
C38
10uF/10V(20%)(NC)
R81 2.2K(1%)
IN
GND
EN FB
LX
U20 SY8089AAAC(NC)
4
2
1 5
3
TP7
1
C46 0.1uF/50V(10%)
R113
5.1K(1%)
C257
22uF/10V(20%)(NC)
R64 0R(1%)
TP13
1
R61 1.8K(1%)
R62 1.8K(1%)
C39
10uF/10V(20%)(NC)
R28410K(1%)(NC)
Q3
L8050QLT1G
C47 0.1uF/50V(10%)
U9
LD39020DTPU11R
IN
4
EN
3
GND
2
OUT 1
TPAD 5
C258
0.1uF/50V(10%)(NC)
R59 0R(1%)
R68 10K(1%)(NC)
R65 0R(1%)
R75 10K(1%)(NC)
C31 10uF/10V(20%)
C36
10nF/50V(10%)(NC)
R60 2.2K(1%)
TP5
1
R63 2.2K(1%)
TP8
1
L11 2.2uH(20%)@3A(NC)
R58 0R(1%)
R74 5.1K(1%)(NC)
C80
10nF/50V(10%)(NC)
C81 0.1uF/50V(10%)
R285150K(1%)(NC)
R76
10K(1%)
R69 56K(1%)
R67 10K(1%)(NC)
C32 10uF/10V(20%)(NC)
R55 1.8K(1%)
R54 10K(1%)(NC)
Espressif
!/!12 16
2019.07
!
Appendix A
!!
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
ES_I2S_DSDIN:IO26
ES_I2S_LRCK:IO25
ES_I2S_SCLK:IO5
ES_I2S_MCLK:IO0
PA_CTRL:IO22
PA:
Speaker:
Power Supply for Codec: Codec:
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_CTRL
PA_CTRL
AND_PA_CTRL
AND_PA_CTRL
PA_INL+
PA_INL-
PA_OUTL+
PA_OUTL-
PA_PVDD1
ES_I2S_DSDIN
ES_I2S_LRCK
ES_I2S_SCLK
ES_I2S_MCLK
ES_I2S_DSDIN
IO18_I2C_SDA
IO23_I2C_SCL
ES8388_CE
R_ES8388_SDA
R_ES8388_SCL
ES8388_ADCVREF
ES8388_VMID
ES8388_VREF
C_ROUT1
C_LOUT1
ROUT1
LOUT1
DAC_AOUTLN
ROUT2
C_LOUT2
C_ROUT2
ES_I2S_MCLK
ES_I2S_SCLK
ES_I2S_LRCK
ES8388_CE
IO18_I2C_SDA
IO23_I2C_SCL
EarPhone_Detect
EarPhone_Detect
LOUT1
ROUT1
DAC_AOUTLP
PA_INL- DAC_AOUTLN
PA_INL+ DAC_AOUTLP PA_OUTL+
PA_OUTL-
AGND
AGND
Codec_VCC33
AGNDAGNDAGND
AGND
AGND GND
VBUS
AGND
Codec_VCC33
AGND
VBUS
AGND AGND AGND
Codec_VCC33
AGND
Codec_VCC33
AGND
AGND
Codec_VCC33
AGND
AGND
Codec_VCC33 Codec_VCC33
AGND
AGND
AGND
AGND
AGND
AGND
Codec_VCC33
AGND
AGND
AGND
AGND
AGND
Codec_VCC33
AGND AGND
AGND
AGND
ES_I2S_MCLK2
ES_I2S_SCLK2
ES_I2S_LRCK2
ES_I2S_DSDIN2
PA_CTRL
2
IO18_I2C_SDA
2,5
IO23_I2C_SCL2,5
Titl e
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Document Number Rev
Date: Sheet of
<04_Codec&PA> V3.1
<ESP32-LyraTD-DSPG_A>
C
45Friday, March 15, 2019
Titl e
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Document Number Rev
Date: Sheet of
<04_Codec&PA> V3.1
<ESP32-LyraTD-DSPG_A>
C
45Friday, March 15, 2019
Titl e
Size
Document Number Rev
Date: Sheet of
<04_Codec&PA> V3.1
<ESP32-LyraTD-DSPG_A>
C
45Friday, March 15, 2019
L3 3A@120ohm,25mohm
R121 100R(1%)
R97 100K(1%)
C95
10uF/10V(20%)
J2
A2001WR-S-2P
TP14
1
R90
10K(1%)(NC)
C91 22uF/10V(20%)
C246
0.1uF/50V(10%)
U14
SN74LVC1G08DBVR
A
1
B
2
GND
3
VCC 5
Y4
C249
10uF/10V(20%)
C243 22pF/50V(5%)
R98 100K(1%)
C89
0.1uF/50V(10%)
C52
10nF/50V(10%)(NC)
C245
10uF/10V(20%)
C219 22uF/10V(20%)
C86
22pF/50V(5%)
R127 33R(1%)
C72
33pF/50V(5%)
R91
30K(1%)
L7 0R(1%)
C67
1uF/16V(10%)
R89
52.3K(1%)
C69 0.1uF/50V(10%)
C93
0.1uF/50V(10%)
C242 22pF/50V(5%)
C231 0.1uF/50V(10%)(NC)
C92
0.1uF/50V(10%)
U11 RT9043GB@400mA
EN
3
OUT 5
VIN
1
NR/FB 4
GND
2
PJ-393-A
J1
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
R120 100R(1%)
R96
10K(1%)
C71 0.1uF/50V(10%)
C74
330pF/50V(10%)(NC)
C53
0.1uF/50V(10%)
C70
33pF/50V(5%)
C68 0.1uF/50V(10%)
R122 2K(1%)(NC)
C229 0.1uF/50V(10%)(NC)
C75
330pF/50V(10%)(NC)
R101 0R(1%)
C232 0.1uF/50V(10%)(NC)
R218
10K(1%)
R99 30K(1%)
R126 33R(1%)
+
C66
10uF/16V(20%)
Q13
LBSS138LT1G
C247
10uF/10V(20%)
R88
10K(1%)
R128 4.7R(1%)
C90 22uF/10V(20%)
C65
10uF/25V(20%)(NC)
C248
0.1uF/50V(10%)
C64
1uF/16V(10%)
R123 2K(1%)(NC)
L5
3A@120ohm,25mohm
R217
10K(1%)(NC)
C88
0.1uF/50V(10%)
C244
0.1uF/50V(10%)
R237 33R(1%)
C241 22pF/50V(5%)
C218 22uF/10V(20%)
R124
3.3K(1%)(NC)
U18
ES8388
PVDD
3DVDD
2
DGND
4
PGND 29
CCLK
28
CDATA
27
CE
26
MCLK
1
SCLK
5
LRCK
7
DSDIN
6
ASDOUT
8
LIN1
24
RIN1
23
LIN2
22
RIN2
21
HPVDD 16
AVDD 17
AGND 18
HPGND 13
LOUT1 12
ROUT1 11
LOUT2 15
ROUT2 14
VMID 20
ADCVREF 19
VREF 10
NC1 9
NC2 25
R238 33R(1%)
C94
10uF/10V(20%)
R125 100R(1%)
U13 NS4150
CTRL
1
Bypass
2
IN+
3
IN-
4OUT- 5
VCC 6
GND 7
OUT+ 8
R100 30K(1%)
C73
330pF/50V(10%)(NC)
C57
10uF/10V(20%)
C54
10uF/10V(20%)
C230 0.1uF/50V(10%)(NC)
C87
22pF/50V(5%)
L6 0R(1%)
Espressif
!/!13 16
2019.07
!
Appendix A
!
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
USB: Power & Communication
Reserved for Auto-prog:
Auto program
DTR RTS-->EN IO0 IO2
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 ESP32 RXD0
To ESP32 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
，
LED light ON;
System LED = L
，
LED light OFF;
USB_DP
USB_DN
RST#
ACTIVE
RTS
DTR
RXD0
TXD0
DTR
RTS
EN_Auto
IO0_Auto
IO2_Auto
IO2_Auto
IO0_Auto
EN_Auto
Boot_IO0
Boot_EN
Boot_IO2
D- USB_DN
D+ USB_DP
AUX_USB_POWER
RXD0
TXD0
Boot_IO0
Boot_EN
Boot_IO2
IO18_I2C_SDA
IO23_I2C_SCL
Button_Array_ADC
DSP_DM0_DATA
DSP_DM0_CLK
DSP_DM1_DATA
DSP_DM1_CLK
IO18_I2C_SDA
IO23_I2C_SCL
Button_Array_ADC
DSP_DM0_CLK
DSP_DM0_DATA
DSP_DM1_CLK
DSP_DM1_DATA
System_LED
System_LED
Button_Array_ADC
DSP_DM0_CLK
DSP_DM0_DATA
DSP_DM1_DATA
DSP_DM1_CLK
CNN_LED
GND
GND
VDD33
GND
GND
GND
GND
VBUS0
VDD33
GND
GND
VBUS
GND GND
VBUS
GND GND
GND GND GNDGND GND
VBUS LED_VCC
GND
GND
DSP_VDD_IO2_1V8
GND
GND
LED_VCC
GND
VBUS0
GND GND
VDD33
GND GND
DSP_GNDDSP_GND
DSP_VDD_IO2_1V8
IO18_I2C_SDA 2,4
RXD0
2
TXD02
Boot_EN
2
Boot_IO0
2
Boot_IO2
2
IO23_I2C_SCL2,4
Button_Array_ADC
2
DSP_DM0_DATA
3
DSP_DM0_CLK3
DSP_DM1_DATA
3
DSP_DM1_CLK3
System_LED2
Titl e
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Document Number Rev
Date: Sheet of
<05_Powers&UART> V3.1
<ESP32-LyraTD-DSPG_A>
C
55Thursday, February 14, 2019
Titl e
Size
Document Number Rev
Date: Sheet of
<05_Powers&UART> V3.1
<ESP32-LyraTD-DSPG_A>
C
55Thursday, February 14, 2019
Titl e
Size
Document Number Rev
Date: Sheet of
<05_Powers&UART> V3.1
<ESP32-LyraTD-DSPG_A>
C
55Thursday, February 14, 2019
R107 10K(1%)(NC)
D1 1N5819HW-7-F(NC)
C84
10uF/10V(20%)(NC)
D5 1N5819HW-7-F
D3
LESD5D5.0CT1G
C76
22uF/10V(20%)
C82
10uF/10V(20%)(NC)
D6
LESD5D5.0CT1G
D4
LESD5D5.0CT1G
R105 22.1K(1%)
C85
10nF/50V(10%)(NC)
D2
LESD5D5.0CT1G
SW5
K2-1109SP-B4SA-01
1
122
33
4
4
21
3
56
4
J6
MD2-60ST
1
1
3
3
5
5
2
2
4
4
6
6
7
7
8
8
R106
47.5K(1%)
R117
10K(1%)(NC)
SW6
K2-1109SP-B4SA-01
1
122
33
4
4
C78
10uF/10V(20%)(NC)
R104 10K(1%)(NC)
R273 1K(1%)
C79
1uF/16V(10%)
Q6
L8050QLT1G(NC)
R118
10K(1%)(NC)
R115
30.1K(1%)(NC)
R108 0R(1%)
Q11
LBSS138LT1G
J5
AFC01-S16FCC-00
44
33
22
11
17
17 18 18
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
Q4
L8050QLT1G
R109 0R(1%)
J3
Micro USB 5P Female
VBUS 1
D- 2
D+ 3
GND 5
NC 4
GND
6
GND
7
GND
8
GND
9
R274
10K(1%)
J4
Micro USB 5P Female
VBUS 1
D- 2
D+ 3
GND 5
NC 4
GND
6
GND
7
GND
8
GND
9
U15 CP2102N-A01-GQFN28
DCD
1
RI
2
GND
3
D+
4
D-
5
VDD
6
REGIN
7
VBUS
8
RST
9
NC1
10
SUSPEND
11
SUSPEND
12
NC2
13
NC3
14
NC4 15
NC5 16
NC6 17
NC7 18
NC8 19
NC9 20
NC10 21
NC11 22
CTS 23
RTS 24
RXD 25
TXD 26
DSR 27
DTR 28
PGND 29
C83
0.1uF/50V(10%)(NC)
R102 10K(1%)
R277
30K(1%)
R111 0R(1%)
R254 5.1K(1%)
L8 3A@120ohm,25mohm
Q5
L8050QLT1G
U17 RT9043GB@400mA(NC)
EN
3
OUT 5
VIN
1
NR/FB 4
GND
2
D39 GREEN LED
R110 1K(1%)
R103 10K(1%)
R116
52.3K(1%)(NC)
C77
1uF/16V(10%)
R119 0R(1%)
R278
5.1K(1%)
Espressif
!/!14 16
2019.07
!
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;
2.42V
VOL+
1.8V 1.2V 0.6V
MuteVOL- Action
LED Driver:
DMIC Array:
KEY Array:
Notes
：
1. Default
，
we 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 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
Title
Size Document Number Rev
Date: Sheet of
<02_DMIC_LED_KEY> V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22Thursday, March 07, 2019
Title
Size Document Number Rev
Date: Sheet of
<02_DMIC_LED_KEY> V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22Thursday, March 07, 2019
Title
Size Document Number Rev
Date: Sheet of
<02_DMIC_LED_KEY> V1.1
<<ESP32-LyraTD-DSPG_B>>
C
22Thursday, 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
G2
R1
B4
CV
3
R46 10K(1%)
D1
19-237ABHR6GHC-A012T
G
2R
1
B
4CV 3
C90.1uF/50V(10%)
R43 10K(1%)
D8
19-237ABHR6GHC-A012T
G
2R
1
B
4CV 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
2R
1
B
4CV 3
R27 5.1K(1%)
R56 5.1K(1%)
STD1
M3-L5-3.5
R47
27.5K(1%)
D2
19-237ABHR6GHC-A012T
G
2R
1
B
4CV 3
C1 10uF/10V(20%)
C4
0.1uF/50V(10%)
R42 0R(1%)
R25 5.1K(1%)
D4
19-237ABHR6GHC-A012T
G
2R
1
B
4CV 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
2R
1
B
4CV 3
D3
19-237ABHR6GHC-A012T
G
2R
1
B
4CV 3
SW4
K2-1109SP-B4SA-01
1
122
33
4
4
SW3
K2-1109SP-B4SA-01
1
122
33
4
4
J1
AFC01-S16FCC-00
44
33
22
11
17
17 18 18
55
66
77
88
99
10 10
11 11
12 12
13 13
14 14
15 15
16 16
SW2
K2-1109SP-B4SA-01
1
122
33
4
4
R50
2.2K(1%)
STD3
M3-L5-3.5
R15
3.3K(1%)
R51 0R(1%)
C80.1uF/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
122
33
4
4
R41 0R(1%)
R35 5.1K(1%)
C70.1uF/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
2R
1
B
4CV 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
2R
1
B
4CV 3
C2
1uF/16V(10%)
R54 10K(1%)(NC)
D11
19-237ABHR6GHC-A012T
G2
R1
B4
CV
3
R39 0R(1%)
R53 10K(1%)
R48
12K(1%)
D7
19-237ABHR6GHC-A012T
G2
R1
B4
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
Disclaimer and Copyright Notice
Information in this document, including URL references, is subject to change without
notice.
THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER,
INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT, FITNESS
FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT
OF ANY PROPOSAL, SPECIFICATION OR SAMPLE.
All liability, including liability for infringement of any proprietary rights, relating to use of
information in this document is disclaimed. No licenses express or implied, by estoppel or
otherwise, to any intellectual property rights are granted herein.
The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is
a registered trademark of Bluetooth SIG.
All trade names, trademarks and registered trademarks mentioned in this document are
property of their respective owners, and are hereby acknowledged.
Copyright © 2019 Espressif Inc. All rights reserved.
Espressif IoT Team"
www.espressif.com
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