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Open-Q™ 624A Development Kit

Open-Q™ 624A Development Kit User Kit

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3.8.9 External Battery Charging Header J26

Figure 11 External Battery Charging Header J26

External battery charging header J26 breaks out signals to allow for charging of various types of external

batteries.

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Содержание LANTRONIX Open-Q 624A

Страница 1: ...Open Q 624A Development Kit User Guide Part Number PMD 00065 Revision A August 2020 ...

Страница 2: ...emark of Lantronix Inc registered in the United States and other countries Intrinsyc is a trademark of Intrinsyc Technologies Corporation registered in Canada and other countries Qualcomm is a trademark of Qualcomm Incorporated registered in the United States and other countries Other product and brand names used herein may be trademarks or registered trademarks of their respective owners This doc...

Страница 3: ... 001 March 2019 1 1 Added section 3 5 Added block diagram of GNSS front end Added commands to configure display output Updated photos August 2020 A Initial Lantronix document Added Lantronix document part number Lantronix logo branding contact information and links For the latest revision of this product document please go to http tech intrinsyc com ...

Страница 4: ... Kit ___________________________________ 13 3 6 Development Kit Block Diagram________________________________________ 14 3 7 Open Q 624A SOM _________________________________________________ 15 3 7 1 Hardware Features ______________________________________________ 16 3 7 2 SOM RF Interfaces for Wi Fi and Bluetooth Antennas____________________ 17 3 7 3 SOM RF Interface for GNSS Antenna ____________...

Страница 5: ...__________ 42 3 8 20 Camera connectors J4 and J5 _____________________________________ 45 3 8 21 Automation Connector Header J3100 _______________________________ 49 3 8 22 Buttons_______________________________________________________ 50 3 8 23 USB Type C Port J2500__________________________________________ 51 3 8 24 LEDs ________________________________________________________ 52 3 8 25 HDMI Con...

Страница 6: ... information on this development kit visit https www intrinsyc com snapdragon embedded development kits open q 624a development kit 1 2 Scope This document will cover the following items on the Open Q 624A Block Diagram and Overview Hardware Features Configuration SOM Carrier Board Accessories 1 3 Intended Audience This document is intended for users of the Lantronix Open Q 624A Development Kit ...

Страница 7: ...ence Title R 1 Open Q 624A Schematics SOM Carrier R 2 Open Q 624A SOM Tech Note 48 Carrier Board Design Guide R 3 Open Q 624A SOM Device Specification 2 3 Terms and Acronyms Term and acronyms Definition AMIC Analog Microphone ANC Audio Noise Cancellation B2B Board to Board BLSP Bus access manager Low Speed Peripheral Serial interfaces like UART SPI I2C UIM BT LE Bluetooth Low Energy CSI Camera Ser...

Страница 8: ...ti Purpose Pin NFC Near Field Communication RF Radio Frequency SATA Serial ATA SLIMBUS Serial Low power Inter chip Media Bus SOM System on Module SPMI System Power Management Interface Qualcomm PMIC baseband proprietary protocol SSBI Single wire serial bus interface Qualcomm proprietary mostly PMIC Companion chip and baseband processor protocol UART Universal Asynchronous Receiver Transmitter UFS ...

Страница 9: ...nal Codec GPIO Expansion Header J1 36 Figure 18 Wi Fi BT Module Antenna Connectors 39 Figure 19 GNSS Front end block diagram 40 Figure 20 GNSS External Antenna Connector 41 Figure 21 Onboard GNSS Antenna 41 Figure 22 Display Connector J2 42 Figure 23 Camera Connectors J4 J5 45 Figure 24 J3100 Automation connector header 49 Figure 25 Buttons 50 Figure 26 USB Type C Port J2500 51 Figure 27 User LEDs...

Страница 10: ...eader J53 Pin out 30 Table 3 11 Audio Expansion Header J50 Pin out 32 Table 3 12 Stereo Speaker Header J2100 35 Table 3 13 External Codec GPIO Expansion Header J1 Pin out 36 Table 3 14 GNSS Antenna Selection Switch 40 Table 3 15 MIPI CSI Camera Connector Pinouts J5 J4 45 Table 3 16 Automation Connector J3100 Pin Out 49 ...

Страница 11: ...Radio devices being placed on the market FCC equipment authorization rules or other regulations pertaining to consumer devices being placed on the market for use by the general public This development platform may only be used in a controlled user environment where operators have obtained the necessary regulatory approvals for experimentation using a radio device and have appropriate technical tra...

Страница 12: ...USB Type C Connector 11 12V DC Power jack 12 GPS External Antenna Connector 13 Sensor header 14 GPS PCB Antenna 15 Power Source Switch Batt DC 16 Battery connector 17 USB Debug UART Micro B 18 SOM Power Probe header 21 19 Speaker Connector 20 WLAN Antenna 2 PCB Trace 21 USB Type A Not supported 22 Audio Expansion Header 23 Micro USB port not supported 24 MIPI DSI LCD Display Connector 25 Headset C...

Страница 13: ...kit serial number is required The serial number can be found on the label on the top side of the SOM The label contains the Serial Number and WIFI MAC address Note Please retain the Development Kit serial number for warranty purposes Refer to http tech intrinsyc com projects serialnumber wiki for more details about locating the development kit serial number Figure 2 Development Kit label location ...

Страница 14: ...1 BLSP CSI 0 GPIO Expansion Header BLSP GPIO From PMIC GPIO MPP WRG7640 GNSS Receiver GNSS Ant Conn IQ CNTL U FL U FL GNSS Front end Boot Mode Switches JTAG JTAG header SOM Power Probe Pwr Pwr Boot Mode UART 3 3V Reg VPH_PWR Audio Codec WCD9335 Audio I O 4x AMIC 3x DMIC Audio IO Microphone header WSA8815 Spk amp PDM Speaker terminal DSI switch DSI 4L Display select GPIO GPIO System config sw GPIOs...

Страница 15: ... more details please refer to the Open Q 624A SOM Device Specification document R 3 It contains the following key components Qualcomm 624 APQ8053 Lite application processor 2GB LPDDR3 RAM 4GB eMMC Flash PMI8952 PM8953 power management ICs PMIC for peripheral LDOs boost regulators battery charging and other house keeping functions Pre certified 802 11ac 2x2 MU MIMO Wi Fi BT Module with independent ...

Страница 16: ...3 3x MHF4 antenna connectors 2 for Wi Fi 1 separate for Bluetooth GNSS Receiver Qualcomm WGR7640 GPS GLONASS COMPASS U FL antenna connector with 2 7v bias for active antenna LCD Touchscreen Interface 1x 4 lane MIPI DSI LCD up to 1080P Full HD 60fps Camera Interface Up to 21MP with 2x 4 lane MIPI CSI and dual ISPs Video Video Capture up to 4K Ultra HD at 30fps Video Playback 4K Ultra HD H 264 AVC a...

Страница 17: ...his port is connected to the carrier board PCB antenna labelled BT via a coaxial cable The Wi Fi BT module is designed with a dedicated Bluetooth antenna port so that the Bluetooth and Wi Fi antennas can be physically separated in the end product to provide better isolation between them This is done to improve concurrent Wi Fi and Bluetooth operation The greater the separation between antennas the...

Страница 18: ...s WSA8815 Stereo speaker terminals 1x 3 5 mm headset interface 8x digital microphones on carrier board Audio Expansion Analog and digital audio expansion headers 4x analog microphone inputs 8x digital mic inputs 1x stereo line output I2S SLIMBUS interface for external audio devices I O 1x USB3 0 Type C debug UART USB interface GPIO expansion header GPIO UART SPI I2C buses Haptic output Sensor Expa...

Страница 19: ...Default out of the box configuration is OFF Note FORCE USB boot option not supported by Lantronixc BOOT_CONFIG 3 S10 3 Enables APQ boot configuration 3 when DIP switch turned on Controlled by APQ GPIO109 See schematic for boot configuration options NOTE Some boot configurations are not supported on the development kit Default out of the box configuration is OFF BOOT_CONFIG 2 S10 4 Enables APQ boot...

Страница 20: ...OM is powered by 3 9V via TI step down converter U400 on the carrier board or a single cell Li on battery To ensure the SOM is getting powered correctly a user can monitor the current going into the SOM via the power probe header J86 see section 3 8 7 below Figure 5 J21 12V DC Power Jack The SOM includes 2 PMIC modules Functionalities of the 2 modules are outlined below PMI8952 PMIC is used for So...

Страница 21: ...DC Power supply is the SOM Power source In this state BAT_THERM and BATT_ID must be simulated Set Positions 3 and 4 of DIP Switch S1 to ON see below When the switch is in the DOWN position the DC source is from the battery connected to J300 3 8 5 Battery Dip Switch S1 Figure 7 Battery Dip Switch S1 This 4 bit switch allows the user to control the battery configuration and boot options Table 3 3 be...

Страница 22: ... battery Default out of the box configuration is ON See section 3 8 4 above for more details on switching between battery and onboard DC Power Supply BAT_ID 4 Turn switch ON to simulate battery ID either when using a battery pack without a battery ID pin or when using onboard DC power supply instead of battery Default out of the box configuration is ON See section 3 8 4 above for more details on s...

Страница 23: ...otes VBATT_CONN J300 6 5 Battery Voltage Voltage must be 3 7V 4 2V BATT_ID_CONN J300 4 Battery Identification Used for identification of battery pack type Typically connects to a pull down resistor in battery pack BAT_THERM_CONN J300 3 Battery Thermistor Used for the charger to monitor the battery pack temperature GND J300 1 2 Ground ...

Страница 24: ...re details Table 3 6 Power Header J86 Pin out Description Signal Pin SOM power positive current sense line SOM_PWR_SENSE_P J86 1 SOM power negative current sense line SOM_PWR_SENSE_N J86 2 GND GND J86 3 The SOM power consumption can be calculated with the formula below where Rsense 5 milliohms 𝑃𝑃𝑃𝑃𝑃𝑃𝑃𝑃 𝑉𝑉𝑉𝑉𝑉𝑉𝑚𝑚𝑝𝑝𝑝𝑝𝑟𝑟𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑒𝑒𝑁𝑁 𝑉𝑉𝑉𝑉𝑉𝑉𝑚𝑚𝑝𝑝𝑝𝑝𝑟𝑟𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑒𝑒𝑃𝑃 𝑉𝑉𝑉𝑉𝑉𝑉𝑚𝑚𝑝𝑝𝑝𝑝𝑟𝑟𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑠𝑒𝑒𝑁𝑁 𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅𝑅 3 ...

Страница 25: ... J60 3 GND GND J60 4 GND GND J60 5 MB_VREG_3P3 3 3V J60 6 MB_ELDO_CAM1_DVDD 1 1V power rail for camera 1 Max current draw 1A J60 7 VREG_L17_2P85 2 85V Max current 300mA Shared with Pin 2 and Both Camera connectors J60 8 MB_ELDO_CAM1_VCM 2 8V power rail for camera 1 VDD Max 300mA J60 9 GND GND J60 10 GND GND J60 11 MB_VREG_3P3 3 3V J60 12 NC NC J53 13 VREG_L22_2P85 2 85V Max Current 150mA J60 14 VR...

Страница 26: ...24A Development Kit User Kit 26 3 8 9 External Battery Charging Header J26 Figure 11 External Battery Charging Header J26 External battery charging header J26 breaks out signals to allow for charging of various types of external batteries ...

Страница 27: ...A SOM J26 11 SMB_INT Leave Floating J26 12 GND GND J26 13 SMB_STAT_N Not Connected on Open Q 624A SOM J26 14 PMI_GPIO_1 Software Configurable GPIO WiPower long beacon extension LBE control J26 15 FG_ALARM Not Connected on Open Q 624A SOM J26 16 NC NC J26 17 BATT_CHG_EXP_TP2 Testpoint 2 J26 18 BATT_CHG_EXP_TP1 Testpoint 1 J26 19 GND GND J26 20 GPIO_5_BLSPx_UART_RX UART RX J26 21 OPT_1 Leave Floatin...

Страница 28: ...vailable over USB via the FTDI FT232RQ chip on the carrier board To get the serial terminal working with a PC user needs to ensure that the appropriate FTDI drivers are installed Also ensure the following DIP Switch is set DIP Switch S10 Position 8 FORCE_SW_UART Set to OFF OPEN The following table shows the serial configuration Table 3 9 Serial Debug Port Settings Baud Rate 115200 Data Bits 8 Pari...

Страница 29: ...eader J53 allows for a 24 pin connection to an optional sensor board ST Micro STEVAL MKI128V6 sensor board If user application does not require a sensor then this header can be used for other applications that require UART SPI I2C UIM or GPIO input and output connections Please refer to the schematic and consider power draw before connecting anything to this header ...

Страница 30: ...R_GYRO_INT J53 6 Sensor IO PWR 1 8 V VREG_L6_1P8 power supply regulator Digital VREG_L6_1P8 J53 7 Sensor Analog power supply from VREG_L10_3P0 3 0V or 3 3V If R160 populated R159 removed SENS_ANA_PWR J53 8 GND GND J53 9 GND GND J53 10 HRM interrupt configurable GPIO140 SENSOR_HRM_INT J53 11 Touch screen interrupt input from processor via GPIO13 TS_INT_N J53 12 Magnetic Switch Interrupt input to pr...

Страница 31: ...n Signal Pin Description Signal Pin Sensor SPI Bus Chip Select GPIO48 SSC_SPI_1_CS_N J53 19 Sensor SPI Bus MOSI GPIO20 BLSP6_3_SPI_MOSI J53 20 Sensor SPI Bus CLK GPIO23 SSC_SPI_1_CLK J53 21 Sensor SPI Bus MISO GPIO21 BLSP6_2_SPI_MISO J53 22 NC NC J53 23 GPIO 35 CCI_TIMER2 J53 24 ...

Страница 32: ... mics Voltage rails to support analog and digital mics 2 single ended analog audio line out 3 GPIO s Note availability of DMICs on this header depends on configuration of DIP Switch S10 See section 3 8 2 for more details To use DMICs on this header on board DMICs must first be disabled by setting S10 position 7 DMIC_DISC_N to OFF OPEN The table below outlines the pin out information of the audio o...

Страница 33: ...differential input CDC_MIC3_N J50 13 CLK for Dual DMICs on Channel 2 U1603 U1604 CDC_DMIC2_CLK J50 14 Analog MIC4 positive differential input CDC_MIC4_P J50 15 DATA for Dual DMICs on Channel 2 U1603 U1604 CDC_DMIC2_DATA J50 16 Analog MIC4 negative differential input CDC_MIC4_N J50 17 CLK for Dual DMICs on Channel 3 U1605 U1606 CDC_DMIC3_CLK J50 18 GND GND J50 19 DATA for Dual DMICs on Channel 3 U1...

Страница 34: ...e ended output CDC_LINE_OUT_3 J50 36 NC No Net J50 37 Audio line outputs 3 and 4 GND reference CDC_LINE_OUT_R EF J50 38 GND GND J50 39 Analog audio line out 4 single ended output CDC_LINE_OUT_4 J50 40 3 8 13 3 5mm Headphone and Microphone Jack J27 Figure 15 3 5mm Headphone and Microphone Jack J27 The on board 3 5mm TRRS jack provides capabilities for a headset with microphone The headphone jack fo...

Страница 35: ...2100 The WSA8815 amplifiers can deliver up to 4 0 W into an 8 Ω load with 1 THD Speaker impedances of 4 Ω to 8 Ω are supported Table 3 12 Stereo Speaker Header J2100 Description Signal Pin NO Speaker Left Channel WSA_SPKR_L_N J2100 1 Speaker Left Channel WSA_SPKR_L_P J2100 2 Speaker Right Channel WSA_SPKR_R_N J2100 3 Speaker Right Channel WSA_SPKR_R_P J2100 4 ...

Страница 36: ...nded use is for 9 6Mhz CODEC MCLK DIV_CLK2 PM_GPIO_1_DIV_CLK 2 J1 4 BLSP1 bit 1 SPI1_CS or I2C1_SDA GPIO 2 GPIO_2_BLSP1_SP I_CS_N J1 5 PMIC Multi Purpose Pin 3 PM_MPP_3 J1 6 BLSP1 bit 0 SPI1_CLK or I2C1_SCL GPIO 3 GPIO_3_BLSP1_SP I_CLK J1 7 MI2S Bus 1 Data bit 3 GPIO 95 MI2S_1_D3 J1 8 GND GND J1 9 MI2S Bus 1 Data bit 2 GPIO 94 MI2S_1_D2 J1 10 GPIO 74 Intended use is for codec interrupt input WCD_I...

Страница 37: ...Connect to HDMI by turning DIP SW S2 to ON MI2S_2_WS_HDR J1 25 General Purpose GPIO 98 GPIO_98_OR_55 J1 26 MI2S Bus 2 SCK GPIO 135 Note shared with HDMI Connector Connected to this connector by default Connect to HDMI by turning DIP SW S2 to ON MI2S_2_SCK_HDR J1 27 Enables on board amplifiers May be used to enable external amplifiers devices GPIO 68 GPIO_68_AMP_PWR_ EN J1 28 GND GND J1 29 Primary ...

Страница 38: ...415HM4H B 7 100Hz 10kHz Digital PDM Microphone MEMS Silicon Omnidirectional 26dB 3dB 94dB SPL Note availability of onboard DMICs depends on configuration of DIP Switch S10 See section 3 8 2 for more details To use onboard DMICs set S10 position 7 DMIC_DISC_N to ON DMIC Channel Microphones CDC_DMIC1 WCD9335 U1601 U1602 CDC_DMIC2 WCD9335 U1603 U1604 CDC_DMIC3 WCD9335 U1605 U1606 624_DMIC0 APQ Proces...

Страница 39: ...bles These antennas connect to the SOM in the following configuration o WLAN ANT1 on the carrier board connects through coax connector J9 to MH4F connector ANT0 on the Wi Fi BT module o WLAN ANT2 on the carrier board connects through coax connector J8 to MH4F connector ANT1 on the Wi Fi BT module o BT ANT on the carrier board connects through coax connector J7 to MH4F connector BT on the Wi Fi BT ...

Страница 40: ...na ON PCB Trace Antenna Note that the PCB trace antenna has relatively low performance and will generally only provide sufficient signal quality if there is a clear open view of the sky Otherwise a better external antenna connected to the SMA connector will be required Use of External Antenna A passive or active antenna may be connected to the SMA external antenna connector but it is recommended t...

Страница 41: ...ceiver performance of the SOM with a user selected antenna intended for an end product it should be connected directly to the SOM s GPS antenna connector U FL to eliminate the effects of the LNA filter and coax cable losses on the carrier board Figure 20 GNSS External Antenna Connector Figure 21 Onboard GNSS Antenna ...

Страница 42: ...ings of up to 20mA each with 28V maximum boost voltage with 2 strings or 24V with 4 strings o External Backlight Driver Support Backlight control signals External Power Display connector LCD AMOLED o PMI8952 programmable display bias output voltage 5V to 6 1V and 1 4V to 6 0V LCD display 4 6V to 5V and 1 4V to 5 4V AMOLED display Additional GPIOs for general purposes available Touch Panel o Suppor...

Страница 43: ... BLSPy_2_UART_RX BLSP3 Bit 2 SPI3_MISO APQ_GPIO_9 J2 11 BLSPy_0_TS_I2C_SCL BLSP3 Bit 0 SPI3_CLK I2C3_SCL APQ_GPIO_11 J2 12 VREG_L6_1P8 Power output Connected to PM8953 VREG_L6 regulator Default is 1 8V Maximum current 300mA shared with other platform circuitry J2 13 BLSPy_3_UART_TX BLSP3 Bit 3 SPI3_MOSI APQ_GPIO_8 J2 14 TS_INT_N Input Touchscreen Interrupt APQ_GPIO_65 J2 15 BACKLIGHT_EN_CONN Outpu...

Страница 44: ... GND J2 38 MIPI_DSI0_DATA3_CONN_N MIPI DSI Data Channel 3 Output Negative Lane J2 39 MIPI_DSI0_DATA3_CONN_P MIPI DSI Data Channel 3 Output Positive Lane J2 40 GND GND J2 41 MIPI_DSI0_DATA2_CONN_N MIPI DSI Data Channel 2 Output Negative Lane J2 42 MIPI_DSI0_DATA2_CONN_P MIPI DSI Data Channel 2 Output Positive Lane J2 43 GND GND J2 44 MIPI_DSI0_DATA1_CONN_N MIPI DSI Data Channel 1 Output Negative La...

Страница 45: ...d Power rails Figure 23 Camera Connectors J4 J5 Figure 21 above shows the MIPI CAM0 J5 and CAM1 J4 and connectors Table 3 15 below outlines the pin outs of these connectors Table 3 15 MIPI CSI Camera Connector Pinouts J5 J4 Pin CAM0 J5 CAM1 J4 Description 1 MB_VREG_3P3 MB_VREG_3P3 Power output Connected to main 3 3V MB_VREG_3P3 max current 700mA 2 MB_VREG_3P3 MB_VREG_3P3 3 MB_VREG_3P3 MB_VREG_3P3 ...

Страница 46: ... flash strobe enable 13 CAM1_RST_N APQ_GPIO40 CAM2_RST_N APQ_GPIO129 Output Default use is for camera reset 14 CAM1_STANDBY_N APQ_GPIO39 CAM2_STANDBY_N APQ_GPIO130 Output Default use is for camera standby 15 GPIO_30_CCI_I2C_SCL0 APQ_GPIO30 GPIO_30_CCI_I2C_SCL0 APQ_GPIO30 Output Default use is for camera CCI0 I2C clock interface 16 GPIO_29_CCI_I2C_SDA0 APQ_GPIO29 GPIO_29_CCI_I2C_SDA0 APQ_GPIO29 Inp...

Страница 47: ... CSI0 CSI1 data lane 3 33 MIPI_CSI0_LANE3_N MIPI_CSI1_LANE3_N Input MIPI CSI0 CSI1 data lane 3 34 GND GND Ground 35 GPIO_31_CCI_I2C_SDA1 APQ_GPIO31 GPIO_31_CCI_I2C_SDA1 APQ_GPIO31 Output Input Default use is for camera CCI1 I2C data interface 36 GPIO_32_CCI_I2C_SCL1 APQ_GPIO32 GPIO_32_CCI_I2C_SCL1 APQ_GPIO32 Output Default use is for camera CCI1 I2C clock interface 37 CAM_IRQ APQ_GPIO12 CAM_IRQ AP...

Страница 48: ...P0 MB_VREG_5P0 Not connected by Default Note A connection from the camera connectors on the carrier board to the camera adapter board is established by a 41 pin cable assembly from JAE Electronics part number JF08R0R041020MA An optional Camera Module Accessory is available See Section 3 9 1 below for more details ...

Страница 49: ...f this connector is to be used remove R300 and disable battery source using switch S300 see section 3 8 4 above for details on battery switch Table 3 16 Automation Connector J3100 Pin Out Note most pins on this connector are Not Connected Only connected pins are listed Description Signal Pin Description Signal Pin 1 8V power output from LDO VREG_L5_1P8 VREG_MDM_1P8 9 Connected to LDO VREG_L5_1P8 P...

Страница 50: ...r SOM AUTO_VBATT 49 51 53 55 57 59 3 8 22 Buttons There are 3 push buttons on the platform which perform typical Android device behavior Figure 25 Buttons S100 Power Button Used to boot device lock wake device Note the platform will auto boot when power is applied when DIP SW S1 position 1 is set to ON S101 Volume Up S100 Volume Down Reset ...

Страница 51: ...igure 26 USB Type C Port J2500 J2500 is a USB 3 0 Type C Connector with SuperSpeed and High Speed connections The connector pinout follows the industry standard for USB 3 0 Embedded Display Port eDP is not supported Android ADB Access is possible on the HS lines using a USB Type C to Micro B adaptor ...

Страница 52: ...pin and signals charging status It is configured by default to indicate battery charging status Figure 27 User LEDs Two user controlled general purpose LED s are also available DS2 BLUE Controlled by PMI_MPP_4_BLUE_LED_DRV DS3 GREEN Controlled by PMI_MPP_2_GREEN_LED_DRV Note that LED DS2320 is not supported with the 642A SOM ...

Страница 53: ...gure 28 HDMI Connector J25 The on board HDMI type A connector enables the Open Q 624A development kit to connect to an external HDMI monitor television via an HDMI cable The Open Q 624A supports up to 1080P 60fps Note that the HDMI port is for evaluation purposes only and may not be HDMI compliant ...

Страница 54: ...a can be connected to connectors J4 or J5 on the development kit Figure 29 13MP Camera Accessory 3 9 2 LCD Touchscreen Accessory An optional LCD touchscreen display is available and can be connected to the Open Q 624A development kit The LCD can be used for the Android UI instead of the HDMI output but both cannot be used at the same time The LCD connects via the display connector J2 on the bottom...

Страница 55: ...y output configured for HDMI 1080p as the default If you purchased the optional LCD display use the following ADB commands to configure the dev kit for use with the LCD adb reboot bootloader fastboot oem select display panel fastboot reboot NOTE these settings are persistent and retain the behavior after power cycles or reboots If you wish to change the display back to the HDMI output use the foll...

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