基本介绍ESP32-LyraTD-DSPG硬件资源AVS 配置软件准备硬件准备烧录固件安装驱动烧录 ESP32网络配置Wi-Fi 联网互动功能语音识别按钮附录 - 原理图主板 (A)子板 (B) www.espressif.com ESP32-LyraTD-DSPG ⽤户指南版本 1.1 乐鑫信息科技 版权所有 © 2020 关于本⼿册 本⽂档介绍了如何使⽤ ESP32-LyraTD-DSPG 开发板。 发布说明 ⽂档变更通知 ⽤户可通过乐鑫官⽹订阅⻚⾯ https://www.espressif.com/zh-hans/subscribe 订阅技术⽂档变更的电⼦邮件通知。 证书下载 ⽤户可通过乐鑫官⽹证书下载⻚⾯ https://www.espressif.com/zh-hans/certificates 下载产品证书。 ⽇期版本发布说明2019.06V1.0⾸次发布。2020.07V1.1•翻译 2.2 节； •更新 ES8388 为 ES8388。 •添加反馈⽂档意⻅链接Espressif反馈⽂档意⻅2020.07 ⽬录 1. 基本介绍 1 .................................................................................................................................1.1. ESP32-LyraTD-DSPG! 1"................................................................................................................1.2. 硬件资源! 1".....................................................................................................................................2. AVS 配置 3 .................................................................................................................................2.1. 软件准备! 3".....................................................................................................................................2.2. 硬件准备! 3".....................................................................................................................................2.3. 烧录固件! 4".....................................................................................................................................2.3.1. 安装驱动! 4"........................................................................................................................2.3.2. 烧录 ESP32! 4"...................................................................................................................2.4. ⽹络配置! 7".....................................................................................................................................2.4.1. Wi-Fi 联⽹! 7".....................................................................................................................2.5. 互动功能! 10"...................................................................................................................................2.5.1. 语⾳识别! 10"......................................................................................................................2.5.2. 按钮! 10".............................................................................................................................A. 附录 - 原理图 11 ........................................................................................................................A.1. 主板 (A)! 11".....................................................................................................................................A.2. ⼦板 (B)! 15.....................................................................................................................................Espressif反馈⽂档意⻅2020.07 1. 基本介绍1. 基本介绍 ESP32-LyraTD-DSPG 是⼀款基于 ESP32 芯⽚的乐鑫⾳频开发板，搭配 DBMD5P DSP 芯⽚，具有声学回声消除 (AEC) 功能，适⽤于语⾳识别、近场和远场语⾳唤醒等应⽤场景，可⽆损编码/解码 WAV、MP3、AAC、FLAC、OPUS 和 OGG 等多种⾳频⽂件格式。该开发板还⽀持连接到亚⻢逊的 AVS（Alexa 语⾳服务）、⾕歌的 Dialogflow 和 GVA（⾕歌语⾳助⼿）服务。 1.1. ESP32-LyraTD-DSPG ESP32-LyraTD-DSPG 的核⼼组件包括⼀个 ESP32-WROVER-B 蓝⽛/Wi-Fi 模组和⼀个具有三⻨克⻛阵列的数字信号处理器（DSP），可降低噪声、消除回声，并实现波束形成与检测。ESP32-LyraTD-DSPG 集成了多个外围设备，由主板和⼦板两部分组成。其中，⼦板主要由⻨克⻛阵列、功能键和指示灯组成，主板集成了电源管理、Wi-Fi 和⾳频模块（如 DSP、编解码器和功率放⼤器等）。主板和⼦板通过 FPC 连接器实现连接。 图 1-1. ESP32-LyraTD-DSPG Layout 1.2. 硬件资源 1. USB 电源输⼊ 为整个系统提供电源。建议使⽤电源适配器供电，保证供电稳定。 Espressif /16 1反馈⽂档意⻅2020.07 1. 基本介绍2. ESP32-WROVER-B 模组 ESP32-WROVER-B 模组是⼀款功能强⼤的通⽤型 Wi-Fi / 双模蓝⽛通信模组，适⽤范围⼴泛，主要⾯向低功耗传感器⽹络和语⾳编码/解码、⾳乐流及运⾏语⾳助⼿客户端 SDK 等⼀系列要求较⾼的应⽤场景。 3. DBMD5P DSP DBMD5P 是⼀款双核可编程语⾳处理器，⽀持语⾳触发器 (VT)、语⾳命令、语⾳认证 (VA)、声学回声消除 (AEC) 等多种功能。该⾳频 DSP 主要⽤于唤醒词检测，可以从外部的三⻨克⻛阵列捕获⾳频数据。 4. ⾳频编解码器 ES8388 ⾳频编解码器⽤于将数字⾳频转换为模拟⾳频输出。 5. ⾳频放⼤器 此⾳频功率放⼤器可以将编解码器的⾳频信号发送⾄外部扬声器进⾏播放。 6. CP2102N USB-UART 桥接器 升级版 CP2102 芯⽚，可⽀持 USB 到 UART 的转换。 7. USB 端⼝ 通⽤ USB 通信端⼝，⽤于 PC 端与 ESP32 模组的通信。 8. ⽿机插孔 ⽤于连接⽿机，通过编解码器输出⾳频。 9. 扬声器输出端⼝ 可通过功率放⼤器⽀持⼀个外部扬声器。 10.FPC 连接器 可通过柔性线缆连接主板与⼦板，其中⼦板集成了⻨克⻛阵列、按钮和 LED 指示灯。 11.Mini Din 连接器 如有需求，可⽤于连接⻨克⻛线缆。默认情况，主板不安装该连接器。 12.⼦板 ⼦板集成了 LED 指示灯及其驱动、功能按键和⻨克⻛阵列（由柔性线缆连接）组成。 📖 说明: CP2102N 芯⽚的设计与 CP2102 略有不同。Espressif /16 2反馈⽂档意⻅2020.07 2. AVS 配置2. AVS 配置 2.1. 软件准备 1. 安装 Flash 下载⼯具 Linux/macOS/Windows ⽤户可使⽤“终端”烧录固件。更多详情，请⻅ ESP-IDF ⼊⻔指南。 Windows ⽤户也可以使⽤ Flash 下载⼯具 烧录固件。 2. 下载固件 请根据 Alexa SDK 在 GitHub ⻚⾯上的指示操作，具体⻅：https://github.com/espressif/esp-va-sdk。 3. 调试⼯具 请根据您的具体开发环境，选择合适的串⼝监视器/控制台，波特率为 115200。 4. App 配⽹ 为了保证 Alexa 的运⾏，您必须将 Alexa 的证书信息提供给 LyraTD-DSPG 开发板，并完成⽹络设置（Wi-Fi ⽤户名和密码）。请前往⾕歌商店下载：https://play.google.com/store/apps/details?id=com.espressif.provbleavs。iOS 版本将后续提供。 2.2. 硬件准备 •1 x PC （建议使⽤ Linux 操作系统） •1 x LyraTD-DSPG •2 x Micro USB 线缆（⼀根为 USB 供电） •1 x 扬声器或1 x ⽿机 📖 说明： GitHub 仓库使⽤了乐鑫的唤醒词引擎（WWE）来处理 "Alexa" 唤醒词，从⽽简化评估过程。如有量产需求，请联系乐鑫销售团队 sales@espressif.com 或您所在地区的 DSPG 销售代表，获取 Amazon 认证唤醒词引擎。Espressif /16 3反馈⽂档意⻅2020.07 2. AVS 配置2.3. 烧录固件 本⽂档介绍了如何在 Windows 操作系统中烧录固件。其他操作系统上的步骤，请前往 GitHub 上的 ESP-VA-SDK 仓库查看。 2.3.1. 安装驱动 请使⽤ Micro USB 线缆将开发板连接⾄您的 PC，并安装 USB-UART 桥接器驱动。 2.3.2. 烧录 ESP32 图 2-1. Flash 下载⼯具 •请根据 GitHub ⻚⾯ 中的步骤编译 esp-va-sdk 示例。 •编译完成后，您将获得 3 个⼆进制⽂件：bootloader.bin，partitions.bin 及 alexa.bin。 •Flash 下载⼯具的⽤户，请根据以下步骤烧录 bin ⽂件： 1. 运⾏ Flash 下载⼯具，并选择 “ESP32 Download Tool”（ESP32 下载⼯具），如图 2-1 所示。 Espressif /16 4反馈⽂档意⻅2020.07 2. AVS 配置2. 接着将出现以下界⾯，如图 2-2 所示。 图 2-2. ESP32 DownloadTool 3. 根据下表为各 bin ⽂件设置地址，如图 2-3 所示。 4. 按照图 2-3 对 Flash 下载⼯具进⾏配置，具体选择 “SPI SPEED”（SPI 速度）为 “80 MHz”；选择 “SPI MODE”（SPI 模式）为 “DIO” ；选择 “FLASH SIZE”（flash ⼤⼩）为“128 Mbit”。 Bin ⽂件地址功能bootloader.bin0x1000基本配置partitions.bin0x8000基本配置alexa.bin0x10000⾳频应⽤Espressif /16 5反馈⽂档意⻅2020.07 2. AVS 配置 图 2-3. 下载配置 5. 选择 PC 端使⽤的 COM ⼝；选择波特率为 “1152000”。 6. 点击“开始”按钮，开始下载固件。 7. 等待下载完成。 图 2-4. 下载固件 📖 说明： 如需使⽤“终端”下载固件，请参考 GitHub ⻚⾯ 中的介绍。Espressif /16 6反馈⽂档意⻅2020.07 2. AVS 配置2.4. ⽹络配置 2.4.1. Wi-Fi 联⽹ 1. 固件烧录完成后，请按下 EN 按钮重启开发板。 2. ⾸次配⽹流程如下： •打开⼿机蓝⽛。打开乐鑫 Alexa 编程应⽤程序，并点击 “Provision New Device”（配置新设备）。确保您的⼿机已经联⽹。 图 2-5. 配置新设备 •这⾥，我们采⽤了 BLE（低功耗蓝⽛）配⽹。在 Android ⼿机系统中，应⽤程序在使⽤ BLE 功能必须获得访问位置的权限。因此，请在弹出消息时点击允许。 •接着，您可以看到待配⽹设备列表，即 “ESP-Alexa-WXYZ”。选择您希望配⽹的设备。 Espressif /16 7反馈⽂档意⻅2020.07 2. AVS 配置 图 2-6. 待配⽹设备列表 •登陆您的亚⻢逊账号。 图 2-7. 登陆亚⻢逊账号 •成功登陆和授权后，您将看到周边 Wi-Fi ⽹络列表。选择您希望连接的 Wi-Fi ⽹络。然后输⼊该 Wi-Fi ⽹络的密码，并点击 Provision（配⽹）按钮。 Espressif /16 8反馈⽂档意⻅2020.07 2. AVS 配置 图 2-8. 可⽤ Wi-Fi ⽹络 图 2-9. 输⼊密码 •配⽹成功连接⾄ Wi-Fi ⽹络后，开发板上的 LED 将开始闪烁（与 Echo ⼀致）。此后，DSP 和 Alexa 将完成初始化，并开始等待语⾳命令。 Espressif /16 9反馈⽂档意⻅2020.07 2. AVS 配置2.5. 互动功能 2.5.1. 语⾳识别 •⼀旦完成所有初始化，设备即准备就绪。您可以使⽤开发板上的 “Action”（⾏动）按钮（“轻触说话”）或说出唤醒词 "Alexa" 开始对话。在使⽤“轻触说话”功能时，请按下后松开按钮，然后开始说话。 •部分⽀持的语⾔命令包括： -Tell me a joke.（讲个笑话。） -How is the weather?（天⽓如何？） -Will it rain today?（今天下⾬吗？） -Sing a song.（播放⼀⾸歌。） -Play TuneIn radio.（打开 TuneIn ⼴播。） -Set volume level to 7.（将⾳量调到 7。） 2.5.2. 按钮 •“Action”（⾏动）按钮可⽤于控制“轻触说话”功能，也可⽤于关闭警报/定时器。 •“Vol+” 和 “Vol-” 按钮可⽤于调整⾳量。请不断点击这两个按键，直⾄达到您希望的⾳量。 •“Mute”（静⾳）按钮可⽤于静⾳/取消静⾳。 •恢复出⼚设置，请同时按下 “Vol+” 和 “Vol-” 按钮，并保持⼤约 10 秒，直⾄ LED 开始闪烁。 Espressif /16 10反馈⽂档意⻅2020.07 附录 AA. 附录 - 原理图 A.1. 主板 (A) 5544332211D DC CB BA APower Supply for ESP32:3.3V/800mABLM18SG121TN1DESP32 Module:1.For Button_Array_ADC;2.Cap should close to Module.Buttons:Power On LEDVISHAY:IFSC1515AHER2R2M01Note:1.Vout = 0.6*(1+R1/R2);ENGPI34GPI35GPIO32GPIO33GPIO25GPIO26GPIO27GPIO14ESP_3V3GPIO13DGNDGPIO22TXD0RXD0GPIO21GPIO19GPIO18GPIO4GPIO0GPIO5GPIO23Module_NCGPIO15GPIO2DGNDB_SHD/SD2B_SWP/SD3B_SCS/CMD B_SCK/CLKB_SDO/SD0B_SDI/SD1GPIO17_NCGPIO16_NCDGNDGPIO12SENSOR_VPGPI36SENSOR_VNGPI39RXD0TXD0Boot_ENBoot_IO0Boot_IO2ES_I2S_MCLKES_I2S_SCLKES_I2S_LRCKES_I2S_DSDINPA_CTRLGPIO0_DSP_MASTER_CLKDBMD_INT_3V3DSP_APR_SPI_CSDSP_APR_SPI_CLKDSP_APR_SPI_MOSIDSP_APR_SPI_MISODSP_APR_I2S_BCLK_3V3DSP_APR_I2S_LRCK_3V3DSP_VT_I2S_DI_3V3DSP_VT_RSTN_3V3DSP_APR_RSTN_3V3DSP_VT_SPI_SCS_3V3DSP_APR_I2S_DO_3V3DSP_VT_WAKEUP_3V3DSP_APR_WAKEUP_3V3DSP_VT_I2S_LevShift_EN_LIO23_I2C_SCLIO18_I2C_SDAButton_Array_ADCGPIO2DGNDGPIO13A_SHD/SD2A_SWP/SD3A_SCS/CMDA_SCK/CLKA_SDO/SD0A_SDI/SD1GPIO15GPIO26GPIO27GPI34GPIO12DGNDGPIO25SENSOR_VPGPI36SENSOR_VNGPI39GPI35GPIO32GPIO33GPIO14GPIO23GPIO22TXD0RXD0GPIO21Module_NCGPIO19GPIO18GPIO5GPIO17_NCGPIO16_NCGPIO4GPIO0DGNDENESP_3V3DBMD_INT_3V3GPI36Button_Array_ADCGPI39GPI39 GPI36GPIO22GPI35GPI35DSP_VT_I2S_DI_3V3GPIO0_DSP_MASTER_CLKES_I2S_MCLKBoot_IO0GPIO0DSP_APR_I2S_BCLK_3V3ES_I2S_SCLKDSP_APR_I2S_LRCK_3V3ES_I2S_LRCKDSP_APR_I2S_DO_3V3ES_I2S_DSDINGPIO5GPIO25GPIO26GPIO32GPIO33GPIO13GPIO19GPIO27GPIO18DSP_APR_SPI_CSDSP_APR_SPI_CLKDSP_APR_SPI_MOSIDSP_APR_SPI_MISODSP_VT_SPI_SCS_3V3DSP_VT_RSTN_3V3DSP_APR_RSTN_3V3GPIO4GPIO21GPIO22PA_CTRLGPIO2Boot_IO2DSP_APR_WAKEUP_3V3GPIO23IO18_I2C_SDAIO23_I2C_SCLGPIO14GPIO15DSP_VT_WAKEUP_3V3DSP_VT_I2S_LevShift_EN_LRXD0 RXD0TXD0 TXD0Boot_ENENGPIO12GPIO13GPIO14GPIO15GPI34GPIO12GPIO18GPIO23System_LEDBoot_IO0Boot_IO2Boot_ENSystem_LEDVDD33_ENDGNDVDD33DGNDDGND GNDDGNDVDD33DGNDDGNDVBUSDGND DGNDESP_3V3DGNDESP_3V3DGNDVDD33GNDGNDGNDGND GNDGNDDGND DGNDDGNDDGNDVDD33DGNDVDD33_INVDD33_INTXD05Boot_EN5Boot_IO05Boot_IO25PA_CTRL4GPIO0_DSP_MASTER_CLK3DSP_VT_RSTN_3V33DSP_APR_RSTN_3V33DBMD_INT_3V33DSP_APR_SPI_CS3DSP_VT_SPI_SCS_3V33DSP_APR_SPI_CLK3DSP_APR_SPI_MOSI3DSP_APR_SPI_MISO3DSP_APR_I2S_BCLK_3V33DSP_APR_I2S_LRCK_3V33DSP_APR_I2S_DO_3V33DSP_VT_I2S_DI_3V33DSP_VT_WAKEUP_3V33DSP_APR_WAKEUP_3V33ES_I2S_DSDIN4ES_I2S_LRCK4ES_I2S_SCLK4ES_I2S_MCLK4DSP_VT_I2S_LevShift_EN_L3RXD05Button_Array_ADC5IO23_I2C_SCL4,5IO18_I2C_SDA4,5System_LED5TitleSizeDocument Number RevDate: Sheet of<02_ESP32_MCU> V3.1C25Thursday, February 14, 2019TitleSizeDocument Number RevDate: Sheet of<02_ESP32_MCU> V3.1C25Thursday, February 14, 2019TitleSizeDocument Number RevDate: Sheet of<02_ESP32_MCU> V3.1C25Thursday, February 14, 2019R11 0R(1%)R18 0R(1%)R3 10K(1%)R21 0R(1%)R710K(1%)C50.1uF/50V(10%)R32 0R(1%)R210K(1%)R9 0R(1%)C710uF/10V(20%)(NC)C3 1uF/16V(10%)R8 0R(1%)INGNDEN FBLXU19 SY8089AAAC421 53R36 0R(1%)TP11R4 10K(1%)(NC)R242 0R(1%)L10 2.2uH(20%)@Isat=3AR12 0R(1%)R22 0R(1%)R33 0R(1%)R239 10K(1%)R281 150K(1%)R24 1K(1%)C2530.1uF/50V(10%)TP21R25 0R(1%)C60.1uF/50V(10%)R23 0R(1%)R31 1K(1%)R6 10K(1%)(NC)R13 0R(1%)TP31C90.1uF/50V(10%)(NC)R282 680K(1%)Q1LBSS138LT1GR240 10K(1%)R19 0R(1%)R26 0R(1%)TP41R5 10K(1%)(NC)R14 51R(1%)U3 AP7361C-33-ER-7/13(NC)GND1VOUT2VIN3Tab4C250 6.8pF/50V(±0.1pF)R283 10K(1%)C1100uF/6.3V(20%)R2415.1K(1%)R27 0R(1%)Q2LBSS138LT1GC80.1uF/50V(10%)(NC)D12 RED LEDC251 22uF/10V(20%)R29 0R(1%)(NC)L1 3A@120ohm,25mohmR15 0R(1%)C40.1uF/50V(10%)U1ESP32-WROOM-32(NC)GND113V32EN3SENSOR_VP4SENSOR_VN5IO346IO357IO328IO339IO2510IO2611IO2712IO1413IO1214GND338IO2337IO2236TXD035RXD034IO2133NC32IO1931IO1830IO529IO1728IO1627IO426IO025GND215IO1316SD217SD318CMD19CLK20SD021SD122IO1523IO224P_GND39SW7K2-1109SP-B4SA-0111223344C1010uF/10V(20%)(NC)R16 0R(1%)C254 0.1uF/50V(10%)R30 0R(1%)R34 0R(1%)SW8K2-1109SP-B4SA-0111223344C20.1uF/50V(10%)U2 ESP32-WROVER-B/M321X0228RBBGND113V32EN3SENSOR_VP4SENSOR_VN5IO346IO357IO328IO339IO2510IO2611IO2712IO1413IO1214GND215IO1316SD217SD318CMD19CLK20SD021SD122IO1523IO224IO025IO426NC127NC228IO529IO1830IO1931NC32IO2133RXD034TXD035IO2236IO2337GND338P_GND39R35 0R(1%)R10 0R(1%)(NC)R20 0R(1%)R17 51R(1%)R2810K(1%)R1 0R(1%)R280 10K(1%)C25222uF/10V(20%)Espressif / 11 16反馈⽂档意⻅2020.07 附录 A5544332211D DC CB BA AI2S: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.R1R2Crystal: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.R1R2Notes:1.Vout=1.20*(1+R1/R2)=1.81V;VISHAY:IFSC1515AHER2 R2M01Note:1.Vout = 0.6*(1+R1/R2);DSP_DM1_DATADSP_DM1_CLKMASTER_STRAPDSP_APR_SPI_MOSIDSP_APR_SPI_MISODSP_APR_SPI_CLKDSP_APR_SPI_CSDSP_APR_WAKEUP_3V3DSP_APR_UART_TXDDSP_APR_UART_RXDDSP_VT_WAKEUP_1V8DSP_VT_UART_TXDBMD_INT_1V8DSP_VT_MASTER_CLK_1V8DSP_APR_MASTER_CLKGPIO0_DSP_MASTER_CLKGPIO0_DSP_MASTER_CLKCRYSTAL_DSP_MASTER_CLKDSP_VT_RSTN_1V8DSP_VT_RSTN_3V3DSP_VT_RSTN_3V3DSP_APR_RSTN_3V3DSP_APR_RSTN_3V3DSP_VT_SPI_SDO_1V8DSP_VT_SPI_CLK_1V8DSP_VT_SPI_SDI_1V8DSP_APR_SPI_CLKDSP_APR_SPI_MOSIDSP_VT_SPI_SCS_1V8DSP_VT_SPI_SCS_3V3DSP_APR_SPI_CSDSP_VT_SPI_SCS_3V3DSP_APR_SPI_CLKDSP_APR_SPI_MOSIDSP_APR_SPI_MISODSP_APR_SPI_MISODSP_VT_SPI_SDO_1V8DSP_VT_WAKEUP_3V3DBMD_INT_1V8DSP_APR_I2S_DO_3V3DSP_APR_I2S_LRCK_3V3DSP_APR_I2S_BCLK_3V3DSP_VT_I2S_BCLK_1V8DSP_VT_I2S_LRCK_1V8DSP_VT_I2S_DI_3V3DSP_VT_I2S_DI_1V8DSP_APR_I2S_BCLK_3V3DSP_VT_I2S_DI_1V8DSP_APR_I2S_LRCK_3V3DSP_APR_I2S_BCLK_3V3DSP_APR_I2S_LRCK_3V3DSP_APR_I2S_DO_3V3DSP_VT_I2S_DI_3V3DBMD_INT_3V3DSP_VT_SPI_SCS_1V8DSP_VT_I2S_LevShift_EN_LDSP_VT_I2S_LevShift_EN_LDSP_VT_WAKEUP_3V3DSP_APR_WAKEUP_3V3DSP_VT_I2S_DI_3V3APR_LDO_INCRYSTAL_DSP_MASTER_CLKDBMD_INT_3V3DSP_DM0_DATADSP_DM0_CLKDSP_DM1_DATADSP_DM1_CLKDSP_DM0_DATADSP_DM0_CLKAPR_LDO_INCRYSTAL_DSP_MASTER_CLKDSP_VDD33_ENDSP_VCCA_1V8DSP_GNDDSP_VDD_IO2_1V8DSP_GNDDSP_VDD_IO1_3V3DSP_GNDDSP_VDD_IO1_3V3DSP_VT_CORE_1V1DSP_GNDDSP_APR_CORE_1V2DSP_GNDDSP_APR_CORE_1V2 DSP_VT_CORE_1V1DSP_GNDDSP_GNDDSP_VDD_IO1_3V3DSP_GNDDSP_GNDDSP_GNDDSP_GNDDSP_GNDDSP_VDD_IO2_1V8DSP_VDD_IO1_3V3DSP_GND DSP_GNDDSP_GNDDGNDVDD33DSP_VDD_IO2_1V8DSP_VDD_IO1_3V3DSP_GND DSP_GNDDSP_GNDDSP_GNDDSP_GNDGNDDSP_VDD_IO1_3V3DSP_GNDDSP_VDD_IO2_1V8DSP_VDD_IO2_1V8DSP_VDD_IO2_1V8DSP_VDD_IO2_1V8DSP_VDD_IO2_1V8 DSP_VT_CORE_1V1DSP_GNDDSP_GND DSP_GNDDSP_VDD_IO1_3V3 DSP_1V8DSP_GNDDSP_GNDDSP_VCCA_1V8DSP_VDD_IO2_1V8DSP_GND DSP_GNDDSP_GNDDSP_GND DSP_GNDVBUSVDD33 DSP_VDD_IO1_3V3DSP_VCCA_1V8DSP_GNDDSP_VDD_IO2_1V8DSP_GNDDSP_VDD_IO2_1V8DSP_VDD_IO2_1V8DSP_VDD_IO1_3V3DSP_GNDDSP_GNDDSP_GND DSP_GNDDSP_GNDDGNDDSP_GND DSP_GNDDSP_GNDDSP_GNDDSP_VDD_IO1_3V3DSP_GNDDSP_VCC_INDSP_VCC_INGPIO0_DSP_MASTER_CLK2DSP_VT_RSTN_3V32DSP_APR_RSTN_3V32DSP_APR_SPI_CS2DSP_VT_SPI_SCS_3V32DSP_APR_SPI_CLK2DSP_APR_SPI_MOSI2DSP_APR_SPI_MISO2DSP_APR_I2S_BCLK_3V32DSP_APR_I2S_LRCK_3V32DSP_APR_I2S_DO_3V32DSP_VT_I2S_DI_3V32DBMD_INT_3V32DSP_VT_I2S_LevShift_EN_L2DSP_VT_WAKEUP_3V32DSP_APR_WAKEUP_3V32DSP_DM0_CLK5DSP_DM0_DATA5DSP_DM1_CLK5DSP_DM1_DATA5Titl eSizeDocument Number RevDate: Sheet of<03_DSP> V3.1C35Thursday, February 14, 2019Titl eSizeDocument Number RevDate: Sheet of<03_DSP> V3.1C35Thursday, February 14, 2019Titl eSizeDocument Number RevDate: Sheet of<03_DSP> V3.1C35Thursday, February 14, 2019R7310K(1%)R4610K(1%)(NC)U4SG5032CAN 24.576000M-TJGA3VDD4OUT3GND2NC/3-ST1R82 10K(1%)(NC)R41 0R(1%)R286 680K(1%)(NC)R56 2.2K(1%)C35 10pF/50V(5%)R8010K(1%)C33 1uF/16V(10%)(NC)C40 1uF/16V(10%)R5210K(1%)(NC)U5DBMD5PVT_VDD_CORE_11VDD_IO2_12VCCA_13VT_MIC_IN4VCCA_25VT_MIC_IP6VCCA_37VT_VDD_CORE_28APR_VDD_CORE_19APR_TDM0_SCLK10APR_TDM0_RXD11APR_VDD_CORE_212APR_TDM0_TXD13APR_TDM0_FSYNC14APR_TDM2_SCLK15APR_TDM2_FSYNC16APR_TDM2_TXD17VDD_IO2_218APR_TDM2_RXD19VDD_IO1_120APR_MASTER_CLK21APR_IIC_SCL22APR_IIC_SDA23APR_TDM3_TXD24APR_TDM3_RXD25APR_TDM3_SCLK26APR_TDM3_FSYNC27APR_TDM1_TXD28VDD_IO1_229APR_TDM1_RXD30APR_VDD_CORE_331APR_TDM1_SCLK32APR_TDM1_FSYNC33APR_JTAG_RTCK34APR_JTAG_TDI35APR_JTAG_TMS36APR_JTAG_TCK37APR_JTAG_TDO38APR_VDD_CORE_439APR_RSTN40APR_UART_RXD41APR_UART_TXD42APR_WAKEUP43VDD_IO1_344APR_DM1_DATA45APR_DM1_CLK46APR_SPI_SDI47APR_SPI_SCK48APR_SPI_SDO49APR_SPI_SCS50APR_VDD_CORE_551APR_AN_REF52VCCA_453APR_MIC_IP54APR_MIC_IN55APR_LDO_OUT56APR_LDO_IN57VT_GPIO20/TDM1_RXD58VT_GPIO9/DM0_DATA59VT_GPIO5/SPI_SDI60VT_GPO4/SPI_SDO61VT_RSTN62NA163NA264NA365VDD_IO2_366VT_VDD_CORE_367VT_GPIO1/II2_SCL068NA469VT_GPIO2/II2_SDA070NA571VT_GPIO18/UART0_RXD72VT_GPIO11/DM1_DATA73VT_GPIO13/TDM0_SCLK74VT_GPO0/TDM1_TXD75VT_GPIO12/DM1_CLK76VT_GPIO14/TDM0_FSYNC77VT_GPIO17/UART0_TXD78VDD_IO2_479VT_GPIO19/TDM1_CLK80VT_GPIO6/SPI_CLK81VT_GPO8/DM0_CLK82VT_VDD_CORE_483VT_GPIO7/SPI_SCS84VT_GPIO10/TDM1_FSYNC85VT_GPIO15/TDM0_RXD86VT_GPIO16/TDM0_TXD87VT_MASTER_CLK88Earth_PAD89C12 10uF/10V(20%)(NC)C27 0.1uF/50V(10%)R57 0R(1%)(NC)R5330.1K(1%)(NC)R72 0R(1%)C255 6.8pF/50V(±0.1pF)(NC)R287 10K(1%)(NC)R42 0R(1%)(NC)U8TC7SPN3125TUVCCA1GND2A13B14OE5VCCB6C44 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%)C300.1uF/50V(10%)C16 0.1uF/50V(10%)U6 RT9043GB@400mA(NC)EN3OUT5VIN1NR/FB4GND2C24 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%)R11210K(1%)U10TC7SPN3125TUVCCA1GND2A13B14OE5VCCB6TP61C43 0.1uF/50V(10%)R279 0R(1%)R77 10K(1%)TP101TP91R83 10K(1%)(NC)R40 10R(1%)C370.1uF/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%)TP111R43 56K(1%)C22 0.1uF/50V(10%)C42 0.1uF/50V(10%)R4752.3K(1%)(NC)U16 RT9043GB@400mAEN3OUT5VIN1NR/FB4GND2R48 2.2K(1%)C25 0.1uF/50V(10%)R45 68K(1%)TP121C20 1uF/16V(10%)C3810uF/10V(20%)(NC)R81 2.2K(1%)INGNDEN FBLXU20 SY8089AAAC(NC)421 53TP71C46 0.1uF/50V(10%)R1135.1K(1%)C25722uF/10V(20%)(NC)R64 0R(1%)TP131R61 1.8K(1%)R62 1.8K(1%)C3910uF/10V(20%)(NC)R28410K(1%)(NC)Q3L8050QLT1GC47 0.1uF/50V(10%)U9LD39020DTPU11RIN4EN3GND2OUT1TPAD5C2580.1uF/50V(10%)(NC)R59 0R(1%)R68 10K(1%)(NC)R65 0R(1%)R75 10K(1%)(NC)C31 10uF/10V(20%)C3610nF/50V(10%)(NC)R60 2.2K(1%)TP51R63 2.2K(1%)TP81L11 2.2uH(20%)@3A(NC)R58 0R(1%)R74 5.1K(1%)(NC)C8010nF/50V(10%)(NC)C81 0.1uF/50V(10%)R285150K(1%)(NC)R7610K(1%)R69 56K(1%)R67 10K(1%)(NC)C32 10uF/10V(20%)(NC)R55 1.8K(1%)R54 10K(1%)(NC)Espressif / 12 16反馈⽂档意⻅2020.07 附录 A5544332211D DC CB BA AES_I2S_DSDIN:IO26ES_I2S_LRCK:IO25ES_I2S_SCLK:IO5ES_I2S_MCLK:IO0 PA_CTRL:IO22PA: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.R1R2DVDD discharge resistancePlease place these compenonts near IC pinson the same layer,NO VIAS!Defualt I2C slave address: 0010 0000=0x20Notes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_CTRLPA_CTRLAND_PA_CTRLAND_PA_CTRLPA_INL+PA_INL-PA_OUTL+PA_OUTL-PA_PVDD1ES_I2S_DSDINES_I2S_LRCKES_I2S_SCLKES_I2S_MCLKES_I2S_DSDINIO18_I2C_SDAIO23_I2C_SCLES8388_CER_ES8388_SDAR_ES8388_SCLES8388_ADCVREFES8388_VMIDES8388_VREFC_ROUT1C_LOUT1ROUT1LOUT1DAC_AOUTLNROUT2C_LOUT2C_ROUT2ES_I2S_MCLKES_I2S_SCLKES_I2S_LRCKES8388_CEIO18_I2C_SDAIO23_I2C_SCLEarPhone_DetectEarPhone_DetectLOUT1ROUT1DAC_AOUTLPPA_INL- DAC_AOUTLNPA_INL+ DAC_AOUTLP PA_OUTL+PA_OUTL-AGNDAGNDCodec_VCC33AGNDAGNDAGNDAGNDAGNDGNDVBUSAGNDCodec_VCC33AGNDVBUSAGND AGNDAGNDCodec_VCC33AGNDCodec_VCC33AGNDAGNDCodec_VCC33AGNDAGNDCodec_VCC33 Codec_VCC33AGNDAGNDAGNDAGNDAGNDAGNDCodec_VCC33AGNDAGNDAGNDAGNDAGNDCodec_VCC33AGNDAGNDAGNDAGNDES_I2S_MCLK2ES_I2S_SCLK2ES_I2S_LRCK2ES_I2S_DSDIN2PA_CTRL2IO18_I2C_SDA2,5IO23_I2C_SCL2,5Titl eSizeDocument Number RevDate: Sheet of<04_Codec&PA> V3.1C45Friday, March 15, 2019Titl eSizeDocument Number RevDate: Sheet of<04_Codec&PA> V3.1C45Friday, March 15, 2019Titl eSizeDocument Number RevDate: Sheet of<04_Codec&PA> V3.1C45Friday, March 15, 2019L3 3A@120ohm,25mohmR121 100R(1%)R97 100K(1%)C9510uF/10V(20%)J2A2001WR-S-2PTP141R9010K(1%)(NC)C91 22uF/10V(20%)C2460.1uF/50V(10%)U14SN74LVC1G08DBVRA1B2GND3VCC5Y4C24910uF/10V(20%)C243 22pF/50V(5%)R98 100K(1%)C890.1uF/50V(10%)C5210nF/50V(10%)(NC)C24510uF/10V(20%)C219 22uF/10V(20%)C8622pF/50V(5%)R127 33R(1%)C7233pF/50V(5%)R9130K(1%)L7 0R(1%)C671uF/16V(10%)R8952.3K(1%)C69 0.1uF/50V(10%)C930.1uF/50V(10%)C242 22pF/50V(5%)C231 0.1uF/50V(10%)(NC)C920.1uF/50V(10%)U11 RT9043GB@400mAEN3OUT5VIN1NR/FB4GND2PJ-393-AJ11122334455667788R120 100R(1%)R9610K(1%)C71 0.1uF/50V(10%)C74330pF/50V(10%)(NC)C530.1uF/50V(10%)C7033pF/50V(5%)C68 0.1uF/50V(10%)R122 2K(1%)(NC)C229 0.1uF/50V(10%)(NC)C75330pF/50V(10%)(NC)R101 0R(1%)C232 0.1uF/50V(10%)(NC)R21810K(1%)R99 30K(1%)R126 33R(1%)+C6610uF/16V(20%)Q13LBSS138LT1GC24710uF/10V(20%)R8810K(1%)R128 4.7R(1%)C90 22uF/10V(20%)C6510uF/25V(20%)(NC)C2480.1uF/50V(10%)C641uF/16V(10%)R123 2K(1%)(NC)L53A@120ohm,25mohmR21710K(1%)(NC)C880.1uF/50V(10%)C2440.1uF/50V(10%)R237 33R(1%)C241 22pF/50V(5%)C218 22uF/10V(20%)R1243.3K(1%)(NC)U18ES8388PVDD3DVDD2DGND4PGND29CCLK28CDATA27CE26MCLK1SCLK5LRCK7DSDIN6ASDOUT8LIN124RIN123LIN222RIN221HPVDD16AVDD17AGND18HPGND13LOUT112ROUT111LOUT215ROUT214VMID20ADCVREF19VREF10NC19NC225R238 33R(1%)C9410uF/10V(20%)R125 100R(1%)U13 NS4150CTRL1Bypass2IN+3IN-4OUT-5VCC6GND7OUT+8R100 30K(1%)C73330pF/50V(10%)(NC)C5710uF/10V(20%)C5410uF/10V(20%)C230 0.1uF/50V(10%)(NC)C8722pF/50V(5%)L6 0R(1%)Espressif / 13 16反馈⽂档意⻅2020.07 附录 A 5544332211D DC CB BA AUSB: Power & CommunicationReserved for Auto-prog: Auto programDTR RTS-->EN IO0 IO2 1 1 1 1 1 0 0 1 1 1 1 0 0 1 1 0 1 1 0 0USB <-> UART:FPC Connector/Reserved:FPC 0.5MM 16PinsTo ESP32 RXD0To ESP32 TXD0Power 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 .R1R2MINI DIN Connector:System LED:Function Keys:2.42V1.11VSystem LED = H LED light ON;System LED = L LED light OFF;USB_DPUSB_DNRST#ACTIVERTSDTRRXD0TXD0DTRRTSEN_AutoIO0_AutoIO2_AutoIO2_AutoIO0_AutoEN_AutoBoot_IO0Boot_ENBoot_IO2D-USB_DND+USB_DPAUX_USB_POWERRXD0TXD0Boot_IO0Boot_ENBoot_IO2IO18_I2C_SDAIO23_I2C_SCLButton_Array_ADCDSP_DM0_DATADSP_DM0_CLKDSP_DM1_DATADSP_DM1_CLKIO18_I2C_SDAIO23_I2C_SCLButton_Array_ADCDSP_DM0_CLKDSP_DM0_DATADSP_DM1_CLKDSP_DM1_DATASystem_LEDSystem_LEDButton_Array_ADCDSP_DM0_CLKDSP_DM0_DATADSP_DM1_DATADSP_DM1_CLKCNN_LEDGNDGNDVDD33GNDGNDGNDGNDVBUS0VDD33GNDGNDVBUSGND GNDVBUSGND GNDGND GNDGNDGND GNDVBUS LED_VCCGNDGNDDSP_VDD_IO2_1V8GNDGNDLED_VCCGNDVBUS0GND GNDVDD33GND GNDDSP_GNDDSP_GNDDSP_VDD_IO2_1V8IO18_I2C_SDA2,4RXD02TXD02Boot_EN2Boot_IO02Boot_IO22IO23_I2C_SCL2,4Button_Array_ADC2DSP_DM0_DATA3DSP_DM0_CLK3DSP_DM1_DATA3DSP_DM1_CLK3System_LED2Titl eSizeDocument Number RevDate: Sheet of<05_Powers&UART> V3.1C55Thursday, February 14, 2019Titl eSizeDocument Number RevDate: Sheet of<05_Powers&UART> V3.1C55Thursday, February 14, 2019Titl eSizeDocument Number RevDate: Sheet of<05_Powers&UART> V3.1C55Thursday, February 14, 2019R107 10K(1%)(NC)D11N5819HW-7-F(NC)C8410uF/10V(20%)(NC)D51N5819HW-7-FD3LESD5D5.0CT1GC7622uF/10V(20%)C8210uF/10V(20%)(NC)D6LESD5D5.0CT1GD4LESD5D5.0CT1GR105 22.1K(1%)C8510nF/50V(10%)(NC)D2LESD5D5.0CT1GSW5K2-1109SP-B4SA-0111223344213564J6MD2-60ST1133552244667788R10647.5K(1%)R11710K(1%)(NC)SW6K2-1109SP-B4SA-0111223344C7810uF/10V(20%)(NC)R104 10K(1%)(NC)R2731K(1%)C791uF/16V(10%)Q6L8050QLT1G(NC)R11810K(1%)(NC)R11530.1K(1%)(NC)R108 0R(1%)Q11LBSS138LT1GJ5AFC01-S16FCC-00443322111717181855667788991010111112121313141415151616Q4L8050QLT1GR109 0R(1%)J3Micro USB 5P FemaleVBUS1D-2D+3GND5NC4GND6GND7GND8GND9R27410K(1%)J4Micro USB 5P FemaleVBUS1D-2D+3GND5NC4GND6GND7GND8GND9U15 CP2102N-A01-GQFN28DCD1RI2GND3D+4D-5VDD6REGIN7VBUS8RST9NC110SUSPEND11SUSPEND12NC213NC314NC415NC516NC617NC718NC819NC920NC1021NC1122CTS23RTS24RXD25TXD26DSR27DTR28PGND29C830.1uF/50V(10%)(NC)R102 10K(1%)R27730K(1%)R111 0R(1%)R254 5.1K(1%)L8 3A@120ohm,25mohmQ5L8050QLT1GU17 RT9043GB@400mA(NC)EN3OUT5VIN1NR/FB4GND2D39GREEN LEDR110 1K(1%)R103 10K(1%)R11652.3K(1%)(NC)C771uF/16V(10%)R119 0R(1%)R2785.1K(1%)Espressif / 14 16反馈⽂档意⻅2020.07 附录 AA.2. ⼦板 (B) 5544332211D DC CB BA AAD=0: I2C slave address:0'b 0111 100x;2.42VVOL+1.8V1.2V 0.6VMuteVOL- ActionLED 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 16PinsDMIC0_DATDMIC0_CLKDMIC0_DATDMIC0_CLKDMIC1_CLKDMIC1_DATButton_Array_ADCIO18_I2C_SDAIO23_I2C_SCLDMIC0_DATDMIC0_CLKDMIC1_DATDMIC1_CLKButton_Array_ADCIO18_I2C_SDAIO23_I2C_SCLLED_SCLLED_SDALED_VCCGNDDMIC_VCCDMIC_VCC GNDGNDGNDDMIC_VCCDMIC_VCC GNDGNDGNDDMIC_VCCDMIC_VCC GNDGNDGNDGND GND GND GNDGNDGNDGNDGNDLED_VCCGNDDMIC_VCCGNDGNDGNDLED_VCCGND GND GNDGNDLED_VCCTitleSizeDocument Number RevDate: Sheet of<02_DMIC_LED_KEY> V1.1<>C22Thursday, March 07, 2019TitleSizeDocument Number RevDate: Sheet of<02_DMIC_LED_KEY> V1.1<>C22Thursday, March 07, 2019TitleSizeDocument Number RevDate: Sheet of<02_DMIC_LED_KEY> V1.1<>C22Thursday, March 07, 2019R11 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%)D919-237ABHR6GHC-A012TG2R1B4CV3R46 10K(1%)D119-237ABHR6GHC-A012TG2R1B4CV3C90.1uF/50V(10%)R43 10K(1%)D819-237ABHR6GHC-A012TG2R1B4CV3R32 5.1K(1%)R5 5.1K(1%)U4NSM0418DTDATA1CLK24VDD3SELECTGND15GND26GND37GND48R45 10K(1%)(NC)C6 22pF/50V(5%)D1019-237ABHR6GHC-A012TG2R1B4CV3R27 5.1K(1%)R56 5.1K(1%)STD1M3-L5-3.5R4727.5K(1%)D219-237ABHR6GHC-A012TG2R1B4CV3C1 10uF/10V(20%)C40.1uF/50V(10%)R42 0R(1%)R25 5.1K(1%)D419-237ABHR6GHC-A012TG2R1B4CV3R37 5.1K(1%)C3 0.1uF/50V(10%)U2NSM0418DTDATA1CLK24VDD3SELECTGND15GND26GND37GND48D619-237ABHR6GHC-A012TG2R1B4CV3D319-237ABHR6GHC-A012TG2R1B4CV3SW4K2-1109SP-B4SA-0111223344SW3K2-1109SP-B4SA-0111223344J1AFC01-S16FCC-00443322111717181855667788991010111112121313141415151616SW2K2-1109SP-B4SA-0111223344R502.2K(1%)STD3M3-L5-3.5R153.3K(1%)R51 0R(1%)C80.1uF/50V(10%)R4 5.1K(1%)R38 5.1K(1%)R1610K(1%)R26 5.1K(1%)R6 5.1K(1%)R21 5.1K(1%)R18 5.1K(1%)U3NSM0418DTDATA1CLK24VDD3SELECTGND15GND26GND37GND48R13 5.1K(1%)R9 5.1K(1%)R10 0R(1%)R31 5.1K(1%)SW1K2-1109SP-B4SA-0111223344R41 0R(1%)R35 5.1K(1%)C70.1uF/50V(10%)R44 10K(1%)(NC)R40 0R(1%)U1IS31FL3236AOUT31OUT42OUT53OUT64OUT75OUT86OUT97OUT108OUT119OUT1210OUT1311OUT1412OUT1513OUT1614OUT1715OUT1816GND117OUT1918OUT2019OUT2120OUT2221OUT2322OUT2423OUT2524OUT2625OUT2726OUT2827OUT2928OUT3029OUT3130OUT3231OUT3332OUT3433OUT3534OUT3635OUT143OUT244SCL42SDA41R_EXT40GND239VCC38AD37SDB36PGND45R34 5.1K(1%)D1219-237ABHR6GHC-A012TG2R1B4CV3R495.76K(1%)STD2M3-L5-3.5R24 5.1K(1%)R55 5.1K(1%)R36 5.1K(1%)R33 5.1K(1%)D519-237ABHR6GHC-A012TG2R1B4CV3C21uF/16V(10%)R54 10K(1%)(NC)D1119-237ABHR6GHC-A012TG2R1B4CV3R39 0R(1%)R53 10K(1%)R4812K(1%)D719-237ABHR6GHC-A012TG2R1B4CV3R29 5.1K(1%)R2 5.1K(1%)R23 5.1K(1%)R20 5.1K(1%)STD4M3-L5-3.5R17 5.1K(1%)R1 5.1K(1%)R12 5.1K(1%)R3 0R(1%)Espressif / 15 16反馈⽂档意⻅2020.07 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 © 2020 Espressif Inc. All rights reserved.Espressif IoT Team"www.espressif.com