Contents 1 Introduction..................................6 2 Key features..................................7 3 What’s in the Box................................10 4 Getting started..................................12 4.1 Prerequisites................................12 4.2 Starting the board for the first time........................12 5 DragonBoard Overview..............................13 5.1 System Block diagram............................13 5.2 Processor................................13 5.3 Memory................................. 13 5.4 MicroSD.................................
Page 3
5.10 Input DC-power..............................16 5.11 Measurements..............................16 5.12 Buttons................................16 5.13 UART..................................16 5.14 System and user LEDs............................16 5.15 Expansion Connector............................17 5.16 Additional Functionality............................17 5.16.1 GPS................................17 5.16.2 Ethernet Connector..........................17 5.16.3 Mini PCIE connector..........................17 6 Low speed Expansion connector............................18 6.1 UART {0/1}................................
Page 4
7.1.4 HSIC................................24 7.1.5 Reserved..............................24 7.1.6 SD/SPI................................. 24 7.1.7 Clocks................................24 7.1.8 USB................................25 7.2 Secondary High Speed Connector.........................25 7.2.1 Feature information........................... 28 7.2.2 MIPI DSI 1..............................28 7.2.3 I2C {CCI_0,CCI _1, SSC_2}...........................28 7.2.3 SPI {SSC_1}..............................28 7.2.4 TSIF – Transport Stream Interface......................28 7.2.5 Other signals on Secondary High Speed Connector..................
Page 5
10.2 Power Source Selection............................33 10.3 Power Consumption............................33 10.4 Power Sequencing............................... 33 11 Buttons and status LED’s..............................35 11.1 Buttons................................35 11.1.1 Volume up..............................35 11.1.2 Volume down............................35 11.1.3 Power Button............................35 11.1.4 Entering Fastboot............................. 35 11.1.5 Hard Reset..............................36 11.2 LEDs..................................36 11.2.1 User LED 1-4.............................
1 Introduction Acronyms and abbreviation definitions Acronym / Definition Abbreviation Bill Of Materials Blue Tooth Clock Central Processing Unit Chip Select Camera Serial Interface Display Serial Interface Electro-Magnetic Compatibility Electro-Magnetic Interference ENable Electro-Static Discharge GrouND GPIO General Purpose I/O Global Positioning System HDMI High Definition Multimedia Interface Inter-Integrated Circuit...
2 Key features The Developer Board 8 (hereinafter referred to as DB8) board is a 96Boards compliant community board based on Qualcomm® Snapdragon™ 820 processor. The following table lists its key features: Qualcomm Snapdragon 820 Quad-core Qualcomm® Kryo™ at up to 2.15GHz per core...
Page 8
ZIF connector with 4L-CSI, DC power, 5V and 3.3V supply, camera control signals, I2C. The DB8 board can be made compatible with Arduino compatible shield using an add-on mezzanine. Go to: http://www.96boards.org/product/sensors-mezzanine/ For more information about compatible mezzanine cards External Storage...
Page 9
2.1 Board overview (J11) Ethernet Connector (J23) Power Jack (J7) Analog Expansion Connector (J15) MINI PCIE Connector (J16) 3.5mm Headset Jack (J20) Secondary High Speed Connector (J21) 24 pin Audio Connector (J8) Low Speed Connector (LED1) Power up indicator (GPS)GPS Antenna (SH1)Shield Compartment containing APQ8096/LPDDR4, PM8996, WGR7640 (S6) Power Button...
1. Connect the HDMI cable to the DB8 HDMI connector (marked J6) and to the LCD Monitor. step 2. Connect the mouse and keyboard to the DB8 USB connectors marked J2 and. (It doesn’t matter which order you connect them in. You can also connect via an external USB Hub.) step 3.
8C with GLONASS, Bluetooth 4.1, OpenGL ES 3.1+, DirectX, OpenCL, Renderscript Compute, FlexRender support. 5.3 Memory The DB8 uses a package on package (PoP) LPDDR4 RAM configuration and discrete UFS 2.0 flash memory ● The LPDDR4 interfaces directly to the APQ8096 built-in LPDDR controller. The maximum DDR clock is 1866 Mhz.
The 96Boards specification calls for a microSD socket to be present on the board. The DB8 µSD slot (J24) signals are routed directly to the APQ8096 SDC2 interface. The slot is a push-push type with a dedicated support for card detect signal (many µSD slots do not have a dedicated CD pins, they use DATA3 state as the card detected signal).
The 96Boards specification calls for a USB port to be implemented as an OTG port or a device port. The DB8 implements a USB device port. The port is located at J4, a MicroUSB type B. If an application requires the use of the device port, USB HUB_SEL switch (S1-4) shall be set to ‘0’...
8V to 18V input voltage power supplied from the SYS_DCIN pins on the Low Speed Expansion Connector Please see section 10 for detailed information on DB8 implementation of DC Power. Note that the DB8 does not support USB Type C.
LEDS 3 2 1 0’. The DB8 drives three LEDs from the red, green and blue LED drive from power management IC PMI8996. The fourth User LEDs is driven by the PMI8996 via PM MPP2. Power indicator LED: A blue LED is included to indicate the presence of input power to the DB8.
The 96Boards specifications calls for a 4-wire UART implementation, UART0 and an optional second 2-wire UART, UART1 on the Low Speed Expansion Connector. The DB8 implements UART0 as a 4-wire UART that connects directly to the APQ8096 SoC. These signals are driven at 1.8V.
The 96Boards specification calls for one SPI bus master to be provided on the Low Speed Expansion Connector. The DB8 implements a full SPI master with 4 wires, CLK, CS, MOSI and MISO all connect directly to the APQ8096 SoC.
The DB8 routes the RST_BTN_N (named PM_RESIN_N on DB8 schematic) signal to the RESIN_N pin of the PMI8996 PMIC. This signal is driven by S4, the on-board reset switch. This signals is a dual purpose, any press lasting less than 10 seconds serves as Volume Down or Zoom out, a press longer than 10 seconds will reset the board.
7 High speed expansion connectors 7.1 Primary high speed expansion connector The following table shows the High Speed Expansion Connector pin out: 96Boards Signals DB8 Signals Note SD_DAT0/SPI1_DOUT BLSP12_SPI_MOSI (APQ GPIO_85) SD_DAT1 N.C. This is a SPI implementation. not SD_DAT2 N.C.
The 96Boards specification calls for an SD interface or a SPI port to be part of the High Speed Expansion Connector. The DB8 implements a full SPI master with 4 wires (96Boards SPI Configuration), CLK, CS, MOSI and MISO all connect directly to the APQ8096 SoC.
7.1.8 USB The 96Boards specification calls for a USB Data line interface to be present on the High Speed Expansion Connector. The DB8 implements this requirement by routing USB channel 3 from the USB HUB to the High Speed Expansion Connector.
Page 26
DB8 Signals Note Currently not configured in SW SSC_SPI_1_MOSI(APQ SSC10) Currently not configured in SW SSC_SPI_1_CS_N (APQ SSC8) Currently not configured in SW SSC_SPI_1_CLK (APQ SSC9) Currently not configured in SW SSC_SPI_1_MISO(APQ SSC11) CAM_MCLK1(APQ-GPIO14) MIPI_DSI1_CLK_P MIPI_DSI1_CLK_M MIPI_DSI1_LANE0_P MIPI_DSI1_LANE0_M MIPI_DSI1_LANE1_P MIPI_DSI1_LANE1_M...
7.2.1 Feature information Please refer to table notes column regarding which features are currently supported in SW. 7.2.2 MIPI DSI 1 The secondary high speed connector supports a 4-lane MIPI-DSI bus. 7.2.3 I2C {CCI_0,CCI _1, SSC_2} The secondary high speed connector supports two I2C busses. ●...
8 Analog Expansion Connectors 8.1 16-pin Analog Connector Unless otherwise noted, these signals interface to the WCD9335 codec (U3). Function Connect to Note CDC_EAR_M CDC_EAR_P VPH_PWR CDC_IN1_M Mic 4 can be used for ANC CDC_IN4_P headset CDC_IN1_P CDC_HPH_R HPH_REF CDC_HPH_L MBHC_HS_DET_L Mechanical insertion detection MIC_BIAS2...
● MIC_BIAS2 Ground reference 8.1.3 Headset The headset signals are rounded from the WCD9335 codec, one signal is routed from the connector to the CODEC, the singles are: ● CDC_HPH_R - Headphone PA right channel output ● CDC_HPH_L - Headphone PA left channel output ●...
● MIC_BIAS1, _BIAS3: Ground reference 9.2 Digital Microphones The 24 pin audio expansion connector supports 2 additional analog microphone inputs: ● DMIC_1 ● DMIC_2 9.3 Line Out The 24 pin audio expansion connector supports 4 line outputs: Line_Out1, Line_Out2: Differential drivenLine_Out3, Line_out4: Single ended with CDC_Line_Ref to use as a reference ground.
SYS_DCIN can be as low as 6.5V on the DB8. ● Note that the DB8 operates from a ~24W supply such as a 12V/2A supply. An 8V to 18V power from the SYS_DCIN pins on the Low Speed Expansion Connector.
Page 34
scheme during the production of this part. The user has no access to alter, modify or change the PMIC power up sequencing.
Once powered off, pressing and holding the power button S6 for longer than 2-3 seconds will result in the device powering on. 11.1.4 Entering Fastboot Holding down power and volume down buttons at power of the DB8 will force the device to enter fastboot mode.
Holding power and volume down buttons for 15 seconds will force a hard reset of the DB8. 11.2 LEDs There are two status LEDs and four User LEDs on the DB8. The Status LEDs report the status of the Bluetooth and Wi-Fi devices onboard. The user LEDs are driven by the SoC directly.
UFS boot image upgrade. Please review the proper OS User Guide for more information on this process. Switch 2, SD BOOT’, when set to ‘on’ position, will force the µSD, J24, to serve as the boot source for the DB8. You can use uSD as the main boot source or it can serve as a method for UFS boot image upgrade.
Page 39
FCC warning 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.
Need help?
Do you have a question about the DB8 and is the answer not in the manual?
Questions and answers