FCC ID: 2AOHHTURBOXC450 TurboX C450 SOM

Empowering Every IoT Device with Our Technology Thundercomm Turbox SOM Datasheet Machine Type: CM450, C450, CM625, and C626. Rev. V1.0 May 06, 2021 DN: TC_4&6_13111 Thundercomm Turbox SOM Datasheet Revision History Revision Date Description 1.0 1.1 Feb 23, 2021 Initial release May 06, 2021 Add Appendix 1. Statement and Compliance. Copyright 2021 Thundercomm Technology Co., Ltd. All rights reserved. Thundercomm Turbox SOM Datasheet Table List Table 1-1: Key features and performance of APQ8053 Pro/SDA450 processor Table 1-2: Key features and performance of C626/C450 SOM Table 2-1. Interface description list Table 2-2. Pin signal list Table 2-3. Pin list for power supply interface Table 2-4. Pin list for touch screen interface Table 2-5. Pin list for display interface Table 2-6. Pin list for camera interfaces Table 2-7. Pin list for audio interfaces Table 2-8. Pin list for USB interfaces Table 2-9. Pin list for SDIO interface Table 2-10. Pin list for UART interface Table 3-1. Pin list for power on interface Table 3-2. Reset interface definition Table 3-3. Pin list for PWMs Table 4-1. Power supply operating condition list Table 4-2. Power output parameters Table 4-3: Electrical characteristics for GPIOs Table 4-4: USB standards and exceptions Table 4-5: I2C standards and exceptions Copyright 2021 Thundercomm Technology Co., Ltd. All rights reserved. Thundercomm TurboxTM SOM Datasheet Table of Contents Chapter 1. Introduction ................................................................................................................... - 2 -

1. Key features ...................................................................................................................................................... - 2 -

2. Hardware block diagram ................................................................................................................................... - 3 -

3. Mechanical size ................................................................................................................................................. - 4 -

4. Daily maintenance ............................................................................................................................................ - 4 -

Chapter 2. Interface Description ...................................................................................................... - 5 -

1. Interface parameter definitions ........................................................................................................................ - 5 -

2. Description ........................................................................................................................................................ - 6 -

3. Pin list ................................................................................................................................................................ - 6 -

Chapter 3. Function Description .................................................................................................... - 15 -

1. Power supply sequence .................................................................................................................................. - 15 -

2. Power supply interface ................................................................................................................................... - 16 -

3. Reset interface ................................................................................................................................................ - 16 -

4. PWMs .............................................................................................................................................................. - 17 -

5. Boot configuration .......................................................................................................................................... - 17 -

Chapter 4. Electrical Characteristics ............................................................................................... - 18 -

1. Operating conditions ...................................................................................................................................... - 18 -

2. Power output .................................................................................................................................................. - 18 -

3. Digital GPIO interface ...................................................................................................................................... - 19 -

4. USB interface ................................................................................................................................................... - 19 -

5. 6. I2S interface .................................................................................................................................................... - 19 -

I2C interface .................................................................................................................................................... - 20 -

Appendix 1. Statement and Compliance ....................................................................................... - 21 -

Appendix 2. Notices ..................................................................................................................... - 24 -

Appendix 3. Trademarks .............................................................................................................. - 25 -

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Thundercomm TurboxTM SOM Datasheet Chapter 1. Introduction The C450 CM450 CM625 C626 is a high-performance SOM (Software on Module) based on the Qualcomm 626

(APQ8053Pro) platform. It brings high-value features to mid-tier devices, designed to support all-day battery life, enhanced camera, advanced graphics, and more. The ultra-compact form factor of the module can be fit into any mobile device such as translator,handheld pos and tablet. It is ideal platform for OEMs to rapidly develop cost-effective cellular devices to the market. Usage scenarios:

The SOMs are ideal for many applications including (but not limited to): dash camera, new retail device, video conference, handheld device, etc. 1. Key features Table 1-1: Key features and performance of APQ8053 Pro/SDA450 processor Applications Processor Customized 64-bit ARM Cortex-A53 octa-core CPU Up to 2.2GHz (APQ8053 Pro)/1.8GHz (SDA450), 14nm FinFET process technology DSP Graphics Qualcomm Hexagon V56 DSP Qualcomm Adreno 506 GPU OpenGL ES 3.1 + AEP Display support Dual DSI 4 lanes, D-PHY 1.1 FHD+; VESA DSC 1.1 Camera support Video Encode Dual 14-bit image signal processing (ISP):

13 MP and 13 MP, 21 MP at 30 fps ZSL with dual-ISP, or 13 MP 30 fps ZSL with single-ISP Three 4-lane CSI (4 + 4 + 4) D-PHY 1.2 at 2.1 Gbps per lane*1 Encode 4K@60fps, H.264, H.265, VP8, and VP9 Wireless display support Decode +Encode 1080p60D + 1080p30E Video Decode Decode 4K@60fps, H.264, H.265, and VP8 Table 1-2: Key features and performance of C626/C450 SOM Processor Memory WLAN Display Interfaces Camera Interfaces Audio Interface USB Display Port Snapdragon APQ8053 Pro/SDA450 2GB LPDDR3 +16GB eMMC5.1 Not supported 2x 4-lane MIPI DSI 3x 4-lane MIPI CSI One port SLIMbus interface to WCD9326/WCD9335 One CDC PDM interface for PM8953 for audio application 2x MI2S 1x DMIC ports supports up to 2 DMICs 1x USB 3.0 SS 1x USB 2.0 HS Not supported

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Thundercomm TurboxTM SOM Datasheet RGMII Not supported Other Interfaces 1x SDC for SD card 8x BLSP, be configured as 8x SPI or 8x I2C or 4x UART 2x camera dedicated I2Cs Charger Not supported Operating Environment Operation Temperature: -20 ~ 70 Operation Humidity: 5%~95%, non-condensing Power supply Dimension RoHS 3.6V ~ 4.4V, typ. 3.8V 34.0 x 35.0x 3.0mm @295 pin All hardware components are fully compliant with EU RoHS 2.0 directive 2. Hardware block diagram Figure 1-1. Block Diagram NOTE:

C450 CPU: SDA450 C626 CPU: APQ8053 Pro

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3. Mechanical size The size of Turbox C626/450 SOM is 19mm x 16mm x 2.3mm, and you can check the size of BTB (board to bord) connectors through their datasheets. Thundercomm TurboxTM SOM Datasheet Figure 1-2. Chipset Overview 4. Daily maintenance It is strongly recommended that the module should be mounted after reflow soldering for the other side of PCB

(printed circuit board) has been completed (otherwise, the SOM would be on the bottom side of the PCB and cause process risk during the 2nd reflow due to the tin remelting and SOM gravity). Therefore, we need to take SOM placement into consideration during layout design to satisfy the process requirements. It is highly recommended that LGA SOM should be placed on the same side with DIP (dual in-line package) components. Refer to the graphic instruction below to maintain the SOM. Figure 1-3. SOM Overview

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Chapter 2. Interface Description This chapter introduces all the interfaces definition, aiming to help developer design and test Thundercomm Turbox C626 series SOM easily. Thundercomm TurboxTM SOM Datasheet 1. Interface parameter definitions Table 2-1. Interface description list Symbol Description AI AO B CSI DI DSI DO H nppdpukp KP MIPI NP OD PD PI PO PD PU P3 P2 MV LV Analog input Analog output Bidirectional digital with CMOS input Supply voltage for MIPI_CSI circuits and I/O; (1.2 V for low power mode) Digital input(CMOS) Supply voltage for MIPI_CSI circuits and I/O; (1.2 V for low power mode) Digital output(CMOS) High-voltage tolerant Programmable pull resistor. The default pull direction is indicated using capital letters and is a prefix to other programmable options:

NP: pdpukp = default no-pull with programmable options following the colon (:) PD: nppukp = default pull-down with programmable options following the colon (:) PU: nppdkp = default pull-up with programmable options following the colon (:) KP: nppdpu = default keeper with programmable options following the colon (:) Contains an internal weak keeper device (keepers cannot drive external buses) Mobile industry processor interface Contains no internal pull Open drain Contains an internal pull-down device Power input Power output Contains an internal pull-down device Contains an internal pull-up device Power group 3, it is 1.8V. SDC Power group 2, it is 1.8V or 2.95V. VPH_PWR 1.8V

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2. Description Thundercomm TurboxTM SOM Datasheet Figure 2-1. Chipset Bottom View 3. Pin list Table 2-2. Pin signal list No. Signal No. Signal SDCARD_D1 SDCARD_CMD 101 TP1_INT_N 102 SENSOR_I2C_SDA MIPI_CSI2_LANE3_P 103 SENSOR_I2C_SCL 203 BBCLK1_EN MIPI_CSI2_LANE3_N 104 UART2_TXD MIPI_CSI2_LANE2_N 105 GPIO_47 1 2 3 4 5 6 7 8 9 MIPI_CSI2_LANE2_P MIPI_CSI2_LANE1_P MIPI_CSI2_LANE1_N MIPI_CSI1_LANE1_N 10 MIPI_CSI1_LANE1_P 11 MIPI_CSI0_LANE2_P 12 MIPI_CSI0_LANE2_N 13 MIPI_CSI0_LANE1_N 106 NC 107 NC 108 NC 109 NC 110 NC 111 NC 112 NC 113 NC 14 MIPI_CSI0_LANE1_P 114 TP1_RST_N 15 MIPI_DSI1_LANE0_P 115 GPIO_59 16 MIPI_DSI1_LANE1_N 116 TP0_INT_N 17 MIPI_DSI1_LANE1_P 117 TP0_RST_N 18 SDCARD_D3 118 GPIO_141

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Signal No. 201 NC 202 NC 204 NC 205 NC 206 NC 207 NC 208 NC 209 USB_DM 210 USB_DP 211 NC 212 LCD1_RST_N 213 NFC_CLK_REQ 214 215 216 VREG_L2_1P1 PMU_MPP2 CBL_PWR_N 217 HPH_L 218 VRTC Signal No. Signal No. Signal Thundercomm TurboxTM SOM Datasheet No. 19 20 21 SDCARD_D2 SDCARD_D0 SDCARD_CLK 119 TP0_I2C_SCL 120 USB_SS_SEL 121 VDISP_M_OUT 22 MIPI_CSI2_LANE0_N 122 DISP_HW_EN 23 MIPI_CSI2_LANE0_P 24 MIPI_CSI2_CLK_N 25 MIPI_CSI2_CLK_P 123 NC 124 NC 125 NC 26 MIPI_CSI1_LANE2_N 126 GPIO_140 27 MIPI_CSI1_LANE2_P 127 FP_SPI_CLK 28 MIPI_CSI1_LANE3_P 128 UART4_TXD 219 MIC1_P 220 MIC1_M 221 MIC2_P 222 223 224 CDC_PDM_SYNC CDC_PDM_RX0 CDC_PDM_TX 225 NC 226 NC 227 NC 228 NC 29 MIPI_CSI1_LANE3_N 129 UIM1_DATA 229 MCAM_RST_N 30 MIPI_CSI0_LANE3_N 130 UIM1_CLK 230 GPIO_33 31 MIPI_CSI0_LANE3_P 131 UIM2_DATA 231 GPIO_41_CCI_TIMER4 32 MIPI_DSI1_LANE0_N 132 UIM2_CLK 232 GPIO_134_ELDO_EN 33 MIPI_DSI1_LANE3_P 133 GPIO_42_ACCL_INT1 233 SD_DET_N 34 MIPI_DSI1_LANE3_N 35 36 37 CAM_I2C_SCL CAM_I2C_SDA SCAM_MCLK 134 NC 135 NC 136 NC 137 FP_SPI_MISO 38 MIPI_CSI1_LANE0_N 138 FP_SPI_MOSI 39 MIPI_CSI1_LANE0_P 139 UART4_RXD 40 MIPI_CSI1_CLK_P 140 UIM1_RESET 41 MIPI_CSI1_CLK_N 141 UIM1_DETECT 42 MIPI_CSI0_LANE0_P 142 UIM2_DETECT 43 MIPI_CSI0_LANE0_N 44 MIPI_CSI0_CLK_N 45 MIPI_CSI0_CLK_P 46 MIPI_DSI1_CLK_P 47 MIPI_DSI1_CLK_N 143 LCD1_TE 144 GPIO_50 145 GND 146 NC 147 GND 234 HPH_R 235 HPH_REF 236 237 238 239 240 241 242 EAR_M EAR_P SPK_M SPK_P CDC_PDM_RX1 CDC_PDM_RX2 CDC_PDM_RX0_DRE 243 NC 244 NC 245 NC 246 GPIO_35 247 DCAM_PWDN 48 MIPI_DSI1_LANE2_P 148 GPIO_44_MAG_INT_N 248 GPIO_38_CCI_ASYNC_IN0 49 MIPI_DSI1_LANE2_N 149 USBC_CC2 50 51 52 53 54 55 56 57 SCAM_PWDN CAM4_CLK DCAM_I2C_SCL LCD0_TE UART5_RXD UART5_RTS GPIO_36 GPIO_0 150 NC 151 NC 152 PM8953_GPIO5 153 NC 154 USB_ID 155 KEY_VOL_DOWN_N 156 VREG_L6_1P8 157 VREG_L10_2P8

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249 MCAM_PWDN 250 DCAM_RST 251 252 253 254 255 256 257 VREG_L11_2P95 LINE_OUT_N LINE_OUT_P SPI_CLK SPI_MISO VREG_L23_1P2 PM8953_GPIO1 No. Signal No. Signal No. Signal Thundercomm TurboxTM SOM Datasheet 58 59 60 61 62 63 DCAM_I2C_SDA 158 USB_VCONN GPIO_1 GPIO_3 UART5_CTS GPIO_2 159 NFC_CLK 160 HS_DET 161 MIC3_P 162 GPIO_43_ALSP_INT_N GPIO_62_NFC_DWL_REQ 163 USBC_CC1 64 MCAM_MCLK 65 66 67 68 69 70 71 SCAM_RST_N UART5_TXD NC NC NC NC NC 164 NC 165 NC 166 PM8953_GPIO4 167 NC 168 PM8953_GPIO6 169 NC 170 VREG_L5_1P8 171 VREG_L16_1P8 72 WDOG_DISABLE 172 VREG_L17_2P85 73 74 75 GPIO_63 GPIO_112 GPS_LNA_EN 173 VREG_L22_2P8 174 MIC_BIAS1 175 MIC_GND 76 MIPI_DSI0_LANE1_N 176 BOOT_PWR 77 MIPI_DSI0_LANE2_N 177 NC 78 MIPI_DSI0_CLK_P 178 GPIO_48 258 GPIO_97 259 DMIC_DATA 260 NC 261 262 263 264 I2S_1_D2 I2S_1_WS VREG_L12_2P95 VREG_L14_UIM1 265 NC 266 267 268 269 SPI_CS SPI_MOSI FORCE_USB_BOOT VREG_L13_3P075 270 GPIO_98 271 GPIO_99 272 DMIC_CLK 273 274 275 I2S_1_D3 I2S_1_SCK PWM 276 NC 277 USB_SS_RX_P 278 USB_SS_RX_M 79 MIPI_DSI0_LANE0_N 179 GPIO_45_GYRO_INT 279 USB_SS_TX_P 80 MIPI_DSI0_LANE3_P 81 82 83 84 85 86 87 88 89 90 91 92 DCAM_MCLK TP1_I2C_SDA TP1_I2C_SCL FP_SPI_CS GPIO_60 VREG_L15_UIM2 NC UART2_RXD NC NC NC NC 180 NC 181 NC 182 VPH_PWR 183 VPH_PWR 184 VPH_PWR 185 NC 186 NC 187 NC 188 NC 189 NC 190 MIC_BIAS2 191 NC 280 USB_SS_TX_M 281 GPIO_96 282 I2S_MCLK 283 GPIO_86 284 285 I2S_1_D1 I2S_1_D0 286 GND 287 GND 288 GND 289 GND 290 GND 291 GND 192 GPIO_46_PRESSURE_INT 292 GND 93 MIPI_DSI0_LANE1_P 193 PWRKEY 94 MIPI_DSI0_LANE2_P 194 UIM2_RESET 95 MIPI_DSI0_CLK_N 96 MIPI_DSI0_LANE0_P 195 VBAT_BB 196 VBAT_BB

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293 GND 294 GND 295 GND No. Signal No. Signal No. Signal Thundercomm TurboxTM SOM Datasheet 97 MIPI_DSI0_LANE3_N 197 VBAT_BB 98 99 GND LCD0_RST_N 100 TP0_I2C_SDA 198 NC 199 NC 200 KEY_VOL_UP_N 3.1. Power supply interface Table 2-3. Pin list for power supply interface PIN Name PIN Type Description VBAT_BB VPH_PWR VREG_L2_1P1 VREG_L5_1P8 VREG_L11_2P95 VREG_L12_2P95 VREG_L13_3P075 VREG_L14_UIM1 VREG_L15_UIM2 VREG_L16_1P8 VREG_L17_2P85 VREG_L22_2P8 VREG_L23_1P2 GND 195,196,197 182,183,184 214 170 251 263 269 264 86 171 172 173 256 PI PO PO PO PO PO PO PO PO PO PO PO PO Module power supply, 3.3 ~ 4.2V, nominal value 3.8V 4.2V output for external circuit Reserved 1.1V Camera Digital (for Rear camera) Reserved 1.8V for Digital IO,GPIO .etc Reserved 2.95V or 1.8V for Micro-SD Reserved 2.95V Reserved 3.075V for Microphone bias Reserved 2.95V or 1.8V for USIM 1 Reserved 2.95V or 1.8V for USIM 2 Reserved 1.8V HKADC Reserved 2.85V for Camera and display (Rear camera) Reserved 2.85V for Camera analog (Front camera) Reserved 1.2V for Camera digital 98,286-295 54-59*8 GND GND 3.2. Touch screen interface Table 2-4. Pin list for touch screen interface PIN Name PIN Voltage Type Description GPIO_65 GPIO_64 BLSP3_GPIO_10 BLSP3_GPIO_11 116 117 100 119 P3 P3 P3 P3 DI DO IO DO TP0_INT_N TP0_RST_N TP0_I2C_SDA TP0_I2C_SCL 3.3. Display interface Turbox-C626-P -SOM provides Dual DSI 4 lanes interfaces and supports FHD+. Table 2-5. Pin list for display interface

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Thundercomm TurboxTM SOM Datasheet Pin Name IO Pin No. instruction MIPI_DSI0_LANE0_P AI, AO 96 MIPI display serial interface 0 lane 0 positive MIPI_DSI0_LANE0_N AI, AO 79 MIPI display serial interface 0 lane 0 negative MIPI_DSI0_LANE1_P AI, AO 93 MIPI display serial interface 0 lane 1 positive MIPI_DSI0_LANE1_N AI, AO 76 MIPI display serial interface 0 lane 1 negative MIPI_DSI0_LANE2_P AI, AO 94 MIPI display serial interface 0 lane 2 positive MIPI_DSI0_LANE2_N AI, AO 77 MIPI display serial interface 0 lane 2 negative MIPI_DSI0_LANE3_P AI, AO 80 MIPI display serial interface 0 lane 3 positive MIPI_DSI0_LANE3_N AI, AO 97 MIPI display serial interface 0 lane 3 negative MIPI_DSI0_CLK_P MIPI_DSI0_CLK_N LCD0_RST_N LCD0_TE AO AO DO DI 78 95 99 53 MIPI display serial interface 0 clock positive MIPI display serial interface 0 clock negative LCD0 Reset signal output LCD0 TE sync signal input MIPI_DSI1_LANE0_P AI, AO 15 MIPI display serial interface 1 lane 0 positive MIPI_DSI1_LANE1_N AI, AO 16 MIPI display serial interface 1 lane 0 negative MIPI_DSI1_LANE1_P AI, AO 17 MIPI display serial interface 1 lane 1 positive MIPI_DSI1_LANE0_N AI, AO 32 MIPI display serial interface 1 lane 1 negative MIPI_DSI1_LANE2_P AI, AO 48 MIPI display serial interface 1 lane 2 positive MIPI_DSI1_LANE2_N AI, AO 49 MIPI display serial interface 1 lane 2 negative MIPI_DSI1_LANE3_P AI, AO 33 MIPI display serial interface 1 lane 3 positive MIPI_DSI1_LANE3_N AI, AO 34 MIPI display serial interface 1 lane 3 negative MIPI_DSI1_CLK_P MIPI_DSI1_CLK_N LCD1_RST_N LCD1_TE AO AO DO DI 46 47 212 143 MIPI display serial interface 1 clock positive MIPI display serial interface 1 clock negative LCD1 Reset signal output LCD1 TE sync signal input 3.4. Camera interfaces The SOM supports 3x 4-lanes camera interfaces: CSI0 and CSI1 and CIS2. Table 2-6. Pin list for camera interfaces Pin Name IO Pin No. instruction Camera1 Interface MCAM_MCLK MIPI_CSI0_CLK_N MIPI_CSI0_CLK_P MIPI_CSI0_LANE0_N MIPI_CSI0_LANE0_P MIPI_CSI0_LANE1_N MIPI_CSI0_LANE1_P MIPI_CSI0_LANE2_N AO AO AO 64 44 45 AIO 43 AIO 42 AIO 13 AIO 14 AIO 12 Camera0 main clock output,CAM_MCLK0 MIPI camera serial interface 0 clock negative MIPI camera serial interface 0 clock positive MIPI camera serial interface 0 lane 0 negative MIPI camera serial interface 0 lane 0 positive MIPI camera serial interface 0 lane 1 negative MIPI camera serial interface 0 lane 1 positive MIPI camera serial interface 0 lane 2 negative

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Thundercomm TurboxTM SOM Datasheet MIPI_CSI0_LANE2_P MIPI_CSI0_LANE3_N MIPI_CSI0_LANE3_P AIO 11 AIO 30 AIO 31 MIPI camera serial interface 0 lane 2 positive MIPI camera serial interface 0 lane 3 negative MIPI camera serial interface 0 lane 3 positive Pin Name IO Pin No. instruction Camera2 Interface MCAM_MCLK MIPI_CSI1_CLK_N MIPI_CSI1_CLK_P MIPI_CSI1_LANE0_N MIPI_CSI1_LANE0_P MIPI_CSI1_LANE1_N MIPI_CSI1_LANE1_P MIPI_CSI1_LANE2_N MIPI_CSI1_LANE2_P MIPI_CSI1_LANE3_N MIPI_CSI1_LANE3_P AO AO AO 37 41 40 AIO 38 AIO 39 AIO 9 AIO 10 AIO 26 AIO 27 AIO 29 AIO 28 Camera0 main clock output,CAM_MCLK1 MIPI camera serial interface 1 clock negative MIPI camera serial interface 1 clock positive MIPI camera serial interface 1 lane 0 negative MIPI camera serial interface 1 lane 0 positive MIPI camera serial interface 1 lane 1 negative MIPI camera serial interface 1 lane 1 positive MIPI camera serial interface 1 lane 2 negative MIPI camera serial interface 1 lane 2 positive MIPI camera serial interface 1 lane 3 negative MIPI camera serial interface 1 lane 3 positive Pin Name IO Pin No. instruction Camera3 Interface MCAM_MCLK MIPI_CSI2_CLK_N MIPI_CSI2_CLK_P MIPI_CSI2_LANE0_N MIPI_CSI2_LANE0_P MIPI_CSI2_LANE1_N MIPI_CSI2_LANE1_P MIPI_CSI2_LANE2_N MIPI_CSI2_LANE2_P MIPI_CSI2_LANE3_N MIPI_CSI2_LANE3_P AO AO AO 81 24 25 AIO 22 AIO 23 AIO 8 AIO 7 AIO 5 AIO 6 AIO 4 AIO 3 Camera0 main clock output,CAM_MCLK2 MIPI camera serial interface 2 clock negative MIPI camera serial interface 2 clock positive MIPI camera serial interface 2 lane 0 negative MIPI camera serial interface 2 lane 0 positive MIPI camera serial interface 2 lane 1 negative MIPI camera serial interface 2 lane 1 positive MIPI camera serial interface 2 lane 2 negative MIPI camera serial interface 2 lane 2 positive MIPI camera serial interface 2 lane 3 negative MIPI camera serial interface 2 lane 3 positive Pin Name IO Pin No. instruction Camera I2C Interface CCI_0_I2C_SDA CCI_0_I2C_SCL CCI_1_I2C_SDA CCI_1_I2C_SCL IO DO IO 36 35 58 camera I2C 0 serial data camera I2C 0 serial clock camera I2C 1 serial data DO 52 camera I2C 1 serial clock 3.5. Audio interface The SOM provides SLIMBUS interface, I2S (Inter-IC Sound) interfaces, and PCM interface as audio interface. SLIMBUS interface is dedicated for external codec IC, which can build systems audio functions. I2S and PCM (Pulse Code Modulation) share the same interfaces.

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Thundercomm TurboxTM SOM Datasheet Table 2-7. Pin list for audio interfaces Pin Name IO Pin No. instruction SlimBus Interface (WCD9335) MCLK2_GPIO66 SLIMBUS_DATA1_GPIO72 RESET_N_GPIO67 INTR1_GPIO73 INTR2_GPIO74 SLIMBUS_CLK_GPIO70 SLIMBUS_DATA0_GPIO71 RF_PA_ON_GPIO112 PM8953_GPIO1 DO DO DO DI DI DO DO DO DO 282 223 242 240 241 222 224 74 27 Primary MI2S master clock C Secondary MI2S master clock B Low-power audio SLIMbus data 1 SLIMbus RESET SLIMbus INTR1 SLIMbus INTR2 Low-power audio SLIMbus clock Low-power audio SLIMbus data 0 SLIMbus GPIO PM8953_GPIO1 Pin Name IO Pin No. instruction I2S1 Interface GPIO_25_STBYB DO 143 I2S_1_SCK I2S_1_WS I2S_1_D0 I2S_1_D1 MI2S_1_D2 MI2S_1_D3 B B B B B B 274 262 285 284 261 273 PRI_MI2S_MCLK_A SEC_MI2S_MCLK_A MI2S 1 bit clock MI2S 1 word select (L/R) MI2S 1 serial data channel 0 MI2S 1 serial data channel 1 MI2S 1 serial data channel 2 MI2S 1 serial data channel 3 Pin Name IO Pin No. instruction GPIO_66_I2S_MCLK DO 282 SEC_MI2S_MCLK_B I2S2 Interface I2S_2_SCK I2S_2_WS I2S_2_D0 I2S_2_D1 DMIC_CLK DMIC_DATA B B B B 127 84 138 137 MI2S 2 bit clock MI2S 2 word select (L/R) MI2S 2 serial data channel 0 MI2S 2 serial data channel 1 Digital microphone interface Pin Name IO Pin No. instruction DO DI 272 259 Digital MIC0 clock Digital MIC0 data 3.6. USB interface The SOM provides a USB 2.0 high-speed interface or USB 3.0 Super-speed interface. Table 2-8. Pin list for USB interfaces

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Pin Name IO Pin No. instruction Thundercomm TurboxTM SOM Datasheet NC USB_DM USB_DP USB_ID USB_SS_RX_P USB_SS_RX_M USB_SS_TX_P USB_SS_TX_M USB_SS_SEL USBC_CC1 USBC_CC2 USB_VCONN PI AI AO AI AO AI AI AI AO AO DO AI AO AI AO AI 205,206 209 210 154 277 278 279 280 120 163 149 158 USB2 high-speed data minus USB2 high-speed data plus USB 2.0 for ID input USB1 super-speed receive plus USB1 super-speed receive minus USB1 super-speed transmit plus USB1 super-speed transmit minus USB Type-C switch control input USB Type-C connector configuration channel USB Type-C connector configuration channel Power input pin (5 V, 210 mA from VBUS) to drive active cables during the DFP mode. An internal mux connects VCONN power to either CC1 or CC2 based on the cable orientation. NOTE: Do not use Type-C. Float Pin: 163,149, and 158. 3.7. SDIO interface The SOM provides one SDC interfaces and supports 1.8V or 3.0V power supply. Table 2-9. Pin list for SDIO interface Pin Name IO Pin No. instruction SDCARD_D1 SDCARD_CMD SDCARD_D3 SDCARD_D2 SDCARD_D0 SDCARD_CLK SD_DET_N VREG_L11_2P95 IO IO IO IO IO DO DI PO 1 2 18 19 20 21 233 251 Data line bit 1 Input and output command Data line bit 3 Data line bit 2 Data line bit 0 Clock signal card detection Configurable Supply voltage 3.0V 3.8. UART interface The SOM provides three UART interfaces, one of which is a 4-wire serial port. UART2 is a 2-wire serial port used for debug by default. UART4 is a 2-wire serial port reserved for users. UART5 is a 4-wire serial port reserved for users.

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Table 2-10. Pin list for UART interface Pin Name IO Pin No. instruction Thundercomm TurboxTM SOM Datasheet UART2_RXD UART2_TXD UART4_RXD UART4_TXD UART5_RXD UART5_TXD UART5_CTS UART5_RTS NOTE:

DI DO DI DO DI DO DI DO 88 104 139 128 54 66 61 55 Receive Data Transmit Data Receive Data Transmit Data Receive Data Transmit Data Clear to Send Request to send Turbox C626 SOM UART Level is 1.8V. Add level conversion IC when connecting peripherals. RTS & CTS of DCE and DTE need cross connection.

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Chapter 3. Function Description 1. Power supply sequence Thundercomm TurboxTM SOM Datasheet Figure 3-1. Power on Sequence Diagram

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Thundercomm TurboxTM SOM Datasheet 2. Power supply interface Dedicated PMIC (Power Management Integrated Circuit) continuously monitors events that might trigger a power-on sequence. If an event occurs, these circuits will power on the IC (Integrated Circuit), check and enable power sources for the device. Two methods to power on your device:

Press the power-on key to power on the device, and wait for 3s to boot up the system. When using CBL_PWR_N pin to connect to ground, SOM will power on automatically with the battery or power supply installed. Table 3-1. Pin list for power on interface Figure 3-2. Power on signal PIN Name PIN Voltage Type Description Notes KYPD_PWR_N1 193 CBL_PWR_N 216 pulled up internally through a 200K resistor to 1.8V pulled up internally through a 200K resistor to 1.8V DI Power on/off key signal Low level active DI Signal use for auto power on when you plug in a battery, active low, internal pull up 3. Reset interface Hold the volume button will initiate a shutdown or reset (software selectable). Stage 1. reset software-configurable bark PMIC generates interrupt, giving the soc device the opportunity to fix the problem or gracefully reset the system. Example events that can cause a bark: Over temperature indicates system is getting too hot. PMIC watchdog indicates that it has not kicked. Stage 2. software-configurable bite If reset is ignored, PMIC will force a reset event (selectable by software). Stage 3 hardware mandatory bite The user can generate a mandatory reset by a long key press of PM_RESIN_N, or KYPD_PWR_N1, or PM_RESIN_N

+ KYPD_PWR_N1. The standalone or combination of reset triggers can also be selected as SBL by directly writing to the appropriate registers

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Table 3-2. Reset interface definition PIN Name PIN Voltage Type Description Notes PM_RESIN_N 155 pulled up internally to 1.8V DI Volume down/Reset key signal, Low active Thundercomm TurboxTM SOM Datasheet 4. PWMs All PWM output are made by Light Pulse Generators. Independent programmable duty cycle and period via LPGs (6-

or 9-bit resolution) are for digital dimming. Table 3-3. Pin list for PWMs Pin Name IO Pin instruction PWM PM8953_GPIO8 DO DO 275 154 PM8953 MPP4 PWM control for the external WLED driver PWM control for the external WLED driver. 5. Boot configuration Special boot-related GPIO features:

They are detected for device bootup during IC reset (during fuse sense). After device bootup, use them as normal GPIO interface. Do not have pull-ups on Boot configuration GPIO (GPIO_106, GPIO_107, GPIO_109, GPIO_113) Forced USB boot:

(During development or factory production, boot from USB3.1 port are forced by using GPIO_37.) FORCED_USB_BOOT (GPIO_37) always takes precedence, regardless of the state of the BOOT_CONFIG GPIOs or FAST_BOOT_SEL fuses. FORCED_USB_BOOT is checked first during the boot device detection prior to BOOT_CONFIG GPIOs. GPIO_37 = 1 forces the SDM device to boot from USB0 port. VREG_1.8 V C626-P SOM Figure 3-3. Power on Signal GPIO_37

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Thundercomm TurboxTM SOM Datasheet Chapter 4. Electrical Characteristics 1. Operating conditions Table 4-1. Power supply operating condition list Parameters Min Typical Max Units Input Power voltage USB_IN VBATT, VPH_PWR Thermal conditions Device operating temperature (case) 2. Power output Table 4-2. Power output parameters 3.8

+2.7

-30 3.8 25 6

+4.8 85 V V C Function Default voltage(V) Programble range(V) Rated current(mA) Default State Expected use VREG_S1_0P8625 VREG_S2_0P8625 VREG_S3_1P225 VREG_S4_2P05 VREG_S5_S6_APC_1 P225 0.87 0.87 1.225 2.04 0.87 0.322.04 0.322.04 0.322.04 0.322.04 3000 4000 2000 2000 0.3501.355 7000 VREG_S7_0P915 0.915 0.322.04 2000 WTR0_VREG_L1_RF_ 1P0 VREG_L2_1P1 VREG_L3_0P925 VREG_L4_1P8 VREG_L5_1P8 1.000 1.100 0.925 1.800 1.800 0.3751.5375 600 0.3751.5375 1200 0.3751.5375 1.7503.3375 600 450 1.7503.3375 600 VREG_L6_1P8 1.800 1.7503.3375 300 VREG_L7_1P8 VREG_L8_2P9 VREG_L9_3P3 VREG_L10_2P8 1.800 2.900 3.3 3.0 VREG_L11_2P95 2.950 1.7503.3375 300 1.7503.3375 1.7503.3375 1.7503.3375 1.7503.3375 600 600 150 800

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Off ON ON ON ON ON Off Off ON Off ON Off ON ON Off Off ON MSM modem MSM core and graphics DDR, MIPI, LDOs LDOs applications processor VDD memory RFICs Camera: digital MSM DSI PLL and USB RFICs and GPS eLNA digital I/Os LPDDR, and eMMC camera, TP, display, and sensors MSM analog, USB and PLLs, WCN XO eMMC WCN Sensors, TP Micro SD Thundercomm TurboxTM SOM Datasheet Function Default voltage(V) Programble range(V) Rated current(mA) Default State Expected use VREG_L12_2P95 2.950 1.7503.3375 50 VREG_L13_3P075 3.125 1.7503.3375 150 VREG_L14_UIM1 VREG_L15_UIM2 VREG_L16_1P8 VREG_L17_2P85 VREG_L18_2P7 VREG_L19_1P3 VREG_L22_2P8 VREG_L23_1P2 1.800 1.800 1.800 2.850 2.700 1.350 2.800 1.15 1.7503.3375 1.7503.3375 50 50 1.7503.3375 5 1.7503.3375 1.7503.3375 0.3751.5375 1.7503.3375 0.3751.5375 300 150 600 150 600 ON ON Off Off Off Off Off Off Off Off MSM pad group 2 USB, external codec audio UIM1 UIM2 PMIC HKADC Camera and display QTI RF front-end MSM analog, WCN Camera: analog Camera: digital 3. Digital GPIO interface The digital I/O (Input/Output) performance depends on its pad type, usage, and power supply voltage. The interfaces of I2C, USB, SPI and UART are complied with their standards with no additional specifications. Performance specifications for all other digital I/Os are organized in this section. The GPIOs can be programmed for a variety of configurations. Table 4-3: Electrical characteristics for GPIOs Parameter Description Min Max Units VIH VIL VOH VOL High-level input voltage, CMOS/Schmitt, Low-level input voltage, CMOS/Schmitt, High-level output voltage, CMOS Low-level output voltage, CMOS 0.65* VIO

-0.3 VIO-0.45 0 VIO + 0.3 0.35* VIO VIO 0.45 V V V V 4. USB interface Table 4-4: USB standards and exceptions Applicable standard Feature exception Universal Serial Bus Specification, Revision 3.1

(August 11, 2014 or later). Feature exceptions SS Gen2. 5. I2S interface Legacy I2S interfaces are designed for connecting microphones and speakers. The multiple I2S (MI2S) interface is designed for connecting microphones and speakers with HDMI audio function.

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Thundercomm TurboxTM SOM Datasheet 6. I2C interface Table 4-5: I2C standards and exceptions Applicable standard Feature exception IC Specification, version 5.0, October 2012 None

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Thundercomm TurboxTM SOM Datasheet Appendix 1. Statement and Compliance FCC statements:

The device for operation in the band 51505350 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems. Federal Communication Commission (FCC) Radiation Exposure Statement When using the product, maintain a distance of 20cm from the body to ensure compliance with RF exposure requirements. This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications or changes to this equipment. Such modifications or changes could void the users authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. This device is intended only for OEM integrators under the following conditions: 1. The antenna must be installed such that 20 cm is maintained between the antenna and users. 2. The transmitter module may not be co-located with any other transmitter or antenna. As long as the two conditions above are met, additional transmitter testing will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required for the installed module. Important Note: In the event that these conditions cannot be met (for example certain laptop configurations or co-

location with another transmitter), then the Federal Communications Commission of the U.S. Government (FCC) and the Canadian Government authorizations are no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator shall be responsible for re-evaluating the end-product (including the transmitter) and obtaining a separate FCC authorization in the U.S. and Canada. OEM Integrators - End Product Labeling Considerations: This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the following: Contains, FCC ID: 2AOHHTURBOXC450. The grantee's FCC ID can be used only when all FCC compliance requirements are met. OEM Integrators - End Product Manual Provided to the End User: The OEM integrator shall not provide information to the end user regarding how to install or remove this RF module in end product user manual. The end user manual must include all required regulatory information and warnings as outlined in this document. CE statements:

Do not use the moudule in the environment at too high or too low temperature, never expose the moudule under strong sunshine or too wet environment.

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The suitable temperature for the product and accessories is -20-70. RF exposure information: The Maximum Permissible Exposure (MPE) level has been calculated based on a distance of d=20 cm between the device and the human body. To maintain compliance with RF exposure requirement, use product that maintain a 20cm distance between the device and human body. Thundercomm TurboxTM SOM Datasheet Receiver category:1 Maximum output power:

Bluetooth Wi-Fi Frequency BLE:2402-2480MHz BR+EDR:2402-2480MHz 2412~2472MHz 5180-5240MHz 5260-5320MHz 5500-5700MHz 5745-5825MHz Max. EIRP 5.26dBm 9.28dBm 17.58dBm 19.08dBm 18.56dBm 19.64dBm 13.49dBm EU Regulatory Conformance Hereby, Thundercomm Technology Co., Ltd declares that this device is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. The device for operation in the band 51505350 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems. EU Declaration of Conformity (DoC) Hereby we, Name of manufacturer:

Thundercomm Technology Co., Ltd Address:

Building 4, No. 99, Data Valley Middle Road, Xiantao District, Yubei District, Chongqing, China Zip code & City:

Chongqing Country:

China Telephone number:

18664928002 declare that this DoC is issued under our sole responsibility and that this product:

Product description:

TurboX C450 SOM Type designation(s):

TurboX C450 Trademark:

TurboX

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Thundercomm TurboxTM SOM Datasheet Hardware version:

TURBOX-C450_SOM Software version:

2020.10.22 Software version note:Some software updates will be released by the manufacturer to fix some bug or enhance some function after placing on the market. All versions released by the manufacturer have been verified and still compliance with the related rules. All RF parameters (e.g.: frequency range, output power) are not accessible to the user, and cant be changed by the user. This product can be used across EU member states. Object of the declaration TurboX C450 are TurboX C450 SOM and incorporate Wi-Fi, Bluetooth technologies. is in conformity with the relevant Union harmonization legislation:

Radio Equipment directive: 2014 / 53 / EU and other Union harmonization legislation where applicable:

RoHS directive: 2011 / 65 / EU WEEE directive: 2012 / 19 / EU with reference to the following standards applied:

Health:EN 62311:2020;

Safety:EN IEC 62368-1:2020+A11:2020;

EMC:ETSI EN 301 489-1 V2.2.3; Draft ETSI EN 301 489-3 V2.1.2; ETSI EN 301 489-17 V3.2.4;

RF:ETSI EN 300 328 V2.2.2; ETSI EN 301 893 V2.1.1; ETSI EN 300 440 V2.2.1;

The Notified Body Telefication with Notified Body number 0560 performed:

Applicable Modules: B+C Where applicable: The issued the EU-type examination certificate: 212140181/AA/00 Description of accessories and components, including software, which allow the radio equipment to operate as intended and covered by the DoC:

Antenna Type Bluetooth : Dipole Antenna, 3dBi WIFI: Dipole Antenna, 3dBi(2.4GHz), 4dBi(5GHz) Manufacturer:MOLEX Part No.:146153 Note: This product will not be sold with the antenna. The above two types of antennas are only used for testing. Signed for and on behalf of:

Chongqing 2021.04.30 Place and date of issue Name, Function, and signature

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Thundercomm TurboxTM SOM Datasheet Appendix 2. Notices Thundercomm may have patents or pending patent programs covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries to service@thundercomm.com. THUNDERCOMM PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you. Changes are made periodically to the information herein; these changes will be incorporated in new editions of the publication. To provide better service, Thundercomm reserves the right to improve and/or modify the products and software programs described in the manuals, and the content of the manual, at any time without additional notice. The software interface and function and hardware configuration described in the manuals included with your development board or system on module might not match exactly the actual configuration of that you have purchased. For the configuration of the product, refer to the related contract (if any) or product packing list, or consult the distributor for the product sales. Thundercomm may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Thundercomm product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Thundercomm or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary. The information of this document should not be as any invitation for offer or any advice to the visitors. Please consult the professional comments from the sales consultant prior to do any actions of invest or purchase. Thundercomm may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. Any references in this publication to non-Thundercomm Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Thundercomm product, and use of those Web sites is at your own risk.Thundercomm shall not be responsible for the content of the third party. Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-

level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Thundercomm and the property right of the date mentioned in this document, including but not limited trademarks, patents, copyrights, trade name etc. are not covered by any open-source license. Thundercomm may update this document at any time without notice. Anyone doesnt have the right to amend, reprint, republication, reproduce, transmit, distribute or any other way to use this document in business or public purpose without the prior written consent by Thundercomm. E-mail messages sent to Thundercomm via the Internet are not guaranteed to be completely secure.Thundercomm shall not be liable for any loss incurred by the surfer when transmitting any information over the Internet or for any loss incurred by Thundercomm when sending any information over the Internet at your request. Thundercomm has all rights under other relevant exemptions provided by laws and regulations, and Thundercomm's failure to claim or delay in claiming such rights shall not be deemed to be a waiver of such rights by Thundercomm. Thundercomm reserves the right of final interpretation of this document.

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Thundercomm TurboxTM SOM Datasheet Appendix 3. Trademarks Thundercomm, Thundercomm Turbox, TURBOX, Thundersoft turbox are trademarks of Thundercomm Corporation or its associate companies in China and/or other countries. Intel, Intel SpeedStep, Optane, and Thunderbolt are trademarks of Intel Corporation or its subsidiaries in the U.S. and/or other countries. Microsoft, Windows, Direct3D, BitLocker, and Cortana are trademarks of the Microsoft group of companies. Mini DisplayPort (mDP), DisplayPort, and VESA are trademarks of the Video Electronics Standards Association. The terms HDMI and HDMI High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. Wi-Fi, Wi-Fi Alliance, WiGig, and Miracast are registered trademarks of Wi-Fi Alliance. USB-C is a registered trademark of USB Implementers Forum. All other trademarks are the property of their respective owners.

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(Madel TurhaY CARN ome mm Model: TurboX C450 |

FCC ID: 2AOHHTURBOXC450 RoHS 5GHz band (W52,W53) : Indoor use only D210035201 a SE fl 201-210128 L

(Model: TurboX C450 FCC ID: 2AOHHTURBOXC450 5GHz band (W52,W653) : Indoor use only 210035201 SE fl 201-210128

Thundercomm Technology Co., Ltd Date:2021/04/30 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 Re: Request of Confidentiality for FCC ID: 2AOHHTURBOXC450 To Whom it may concern:

the Freedom of Pursuant to sections 0.457 and 0.459 of Commissions Rules(CFR 47), Information Act, Thundercomm and Section 552(b)(4) of Technology Co., Ltd hereby requests confidentiality and treatment of certain information accompanying this application. The materials contain trade secrets and proprietary information not customarily released to the public. The public to the Applicant and provide disclosure of unjustified benefits to its competitors. these matters might be harmful We are also hereby request Short-Term Confidentiality for 180 days after the grant as outlined in Public Notice DA04-1705. This provision will give Thundercomm Technology Co., Ltd temporary confidentiality of commercially sensitive information prior to product release. The requested Permanent and Short-Term Confidential exhibits are listed as follows:

PERMANENT AND SHORT-TERM CONFIDENTIAL LIST PERMANENT SHORT-TERM Exhibit 1 2 3 4 5 6 7 8 Description Block Diagram Operational Description Schematics BOM External Photos Internal Photos Test-Setup Photos User Manual to Rule 0.457, disclosure of The Applicant understands that pursuant this application and all accompanying documentations, where applicable, will not be made public before the date of the Grant for this application. Signatory Contact name: Zhou Qiyong Title: Manager Tel: +86 010-82036511 Email: Zhouqy0710@thundersoft.com Thundercomm Technology Co., Ltd Company name: Thundercomm Technology Co., Ltd

Thundercomm Technology Co., Ltd Date: 2021/04/30 To:

Federal Communications Commission, Authorization & Evaluation Division, 7435 Oakland Mills Road, Columbia, MD 21046 To Whom It May Concern:

The Thundercomm Technology Co., Ltd the undersigned, hereby authorizes Mrs. Wendy Zhan from Shenzhen Morlab Communications Technology Co., Ltd., to act on the behalf of the Thundercomm Technology Co., Ltd solely in matters relating to the application for an FCC equipment authorization for FCC ID:

2AOHHTURBOXC450 including the signing of documents in connection with this Application. Necessary acts carried out Shenzhen Morlab Communications Technology Co., Ltd. on our behalf of the Thundercomm Technology Co., Ltd in connection with the Application shall have the same effect as acts of the Thundercomm Technology Co., Ltd also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Thank you for your attention to this matter. Yours Sincerely, Signatory:

Contact name: Zhou Qiyong Title: Manager Tel: +86 010-82036511 Email: Zhouqy0710@thundersoft.com Company name: Thundercomm Technology Co., Ltd

Thundercomm Technology Co., Ltd Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD21046 Company name: Thundercomm Technology Co., Ltd FCC ID: 2AOHHTURBOXC450 Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Certification Guide v02. FCC ID: 2AOHHTURBOXC450 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Modular Certification Guide v02 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal The module must contain power supply regulation on the module The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) The module must demonstrate compliance in a stand-alone configuration The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Device is equipped with metal shielding to cover RF section. Refer to photos. All inputs to the modules are buffered through logic and microprocessor inputs Module chipset incorporates voltage regulation to transceiver circuitry The User Manual has Guiding businesses use by PCB antenna. Device is tested in a test fixture in a standalone configuration FCC ID label format will be included in the filling. Host ID label will be displayed on the host system. Please refer to User Manual Exhibit The module must comply with RF exposure requirements RF exposure evaluation is exempted because of low output power . Name: Zhou Qiyong Date: 2021/04/30 Title: Manager Signature of applicant FCC Modular Approval Request Rev 2.0 Thundercomm Technology Co., Ltd FCC Modular Approval Request Rev 2.0

Thundercomm Technology Co., Ltd UNII Declaration Letter We have declared below featured for FCC equipment authorization, device FCC ID:

2AOHHTURBOXC450

(1) DFS Device --

Master, Client without radar detection capability, Client with Radar detection capability , N/A

(2) Active / Passive Scanning , adhoc mode access point capability Frequency Band

(MHz) Active Scanning

(the device can transmit a probe

(beacon)) 2412 2462 MHz 2422 2452 MHz 5745 5825 MHz 5755 5795 MHz 5180 5240 MHz 5190 5230 MHz 5260 5320 MHz 5270 5310 MHz 5500 5700 MHz 5510 5670 MHz Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, No No No No No No No No No No passive scanning

(where the device is can listen only with no probes) Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, No No No No No No No No No No Ad Hoc Mode capability Access point capability Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, No No No No No No No No No No Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, Yes, No No No No No No No No No No

(3) Country code selection ability -

If no, pls explain how was implemented : Country is selected as US by default and user can not change the country code. Yes , No

(4) Meet 15.202 requirement -

pls check below :

Yes , No , A master device is defined as a device operating in a mode in which it has the capability to transmit without receiving an enabling signal. In this mode it is able to select a channel and initiate a network by sending enabling signals to other devices A client device is defined as a device operating in a mode in which the transmissions of the device are under control of the master. A device in client mode is not able to initiate a network. N/A

(5) For client devices that have software configuration control to operate in different modes (active scanning in some and passive scanning in others) in different bands (devices with multiple equipment classes or those that operate on non-DFS frequencies) or modular devices which configure the modes of operations through software, the application must provide software and operations description on how the software and / or hardware is implemented to ensure that proper operations modes can not be modified by end user or an installer. Apply , No Apply ,

(If apply , pls help to provide explanation on how it was implement (By hardware or software , and how software was controlled) The device configuration can not be modified by user as program is not exposed to user by any means. Hardware does not allow USB connection for user which is must to change the configuration. If you have any questions, please feel free to contact me at the address shown below. Yours sincerely, Signatory Contact name:Zhou Qiyong Title:Manager

Declaration To whom it may concern:

We have declared below featured for FCC equipment authorization, Device FCC ID: 2AOHHTURBOXC450 Don't operate on Channels 12 and 13. US 2.4G channel 12-13 and Country code selection are disabled through proprietary software and are not user changeable Should you have any questions, please feel free to contact me. Date:2021/04/30 Signatory:

Contact name: Zhou Qiyong Title: Manager Tel: +86 010-82036511 Email: Zhouqy0710@thundersoft.com Company name: Thundercomm Technology Co., Ltd