Developer Board 8
H a r d w a r e U s e r G u i d e
Contents
1 Introduction
2 Key features........................................................................................................................................................................ 7
3 What’s in the Box..............................................................................................................................................................10
4 Getting started
4.1 Prerequisites
4.2 Starting the board for the first time
5 DragonBoard Overview.................................................................................................................................................... 13
5.1 System Block diagram............................................................................................................................................13
5.2 Processor............................................................................................................................................................... 13
5.3 Memory................................................................................................................................................................. 13
5.4 MicroSD................................................................................................................................................................. 14
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5.5 WiFi/BT/RF.............................................................................................................................................................14
5.6 Display Interface.................................................................................................................................................... 14
5.6.1 HDMI...........................................................................................................................................................14
5.6.2 MIPI-DSI......................................................................................................................................................14
5.7 Camera Interfaces
5.8 USB Ports
5.8.1 USB-Host ports...........................................................................................................................................15
5.8.2 USB-Device port......................................................................................................................................... 15
5.9 Audio......................................................................................................................................................................15
5.9.1 BT Audio
5.9.2 HDMI Audio
............................................................................................................................................................... 15
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5.10 Input DC-power
5.11 Measurements.................................................................................................................................................... 16
5.12 Buttons................................................................................................................................................................ 16
...................................................................................................................................................16
5.13 UART
5.14 System and user LEDs
5.15 Expansion Connector
5.16 Additional Functionality......................................................................................................................................17
6 Low speed Expansion connector......................................................................................................................................18
6.1 UART {0/1}............................................................................................................................................................. 19
6.2 I2C {0/1}.................................................................................................................................................................19
6.3 GPIO {A-L}.............................................................................................................................................................. 20
.................................................................................................................................................................... 16
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5.16.1 GPS............................................................................................................................................................17
5.16.2 Ethernet Connector..................................................................................................................................17
5.16.3 Mini PCIE connector................................................................................................................................. 17
6.4 SPI 0....................................................................................................................................................................... 20
6.5 PCM/I2S
6.6 Power and Reset
6.7 Power Supplies...................................................................................................................................................... 21
7 High speed expansion connectors....................................................................................................................................22
7.1 Primary high speed expansion connector.............................................................................................................22
7.1.1 MIPI DSI 0
7.1.2 MIPI CSI {0/1}
7.1.3 I2C {2/3}
................................................................................................................................................................. 20
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................................................................................................................................................... 23
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7.1.4 HSIC
7.1.5 Reserved..................................................................................................................................................... 24
7.1.6 SD/SPI......................................................................................................................................................... 24
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7.1.7 Clocks
7.1.8 USB
7.2 Secondary High Speed Connector
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.................................................................................. 28
8 Analog Expansion Connectors.......................................................................................................................................... 29
8.1 16-pin Analog Connector...................................................................................................................................... 29
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8.1.1Earpiece.......................................................................................................................................................29
8.1.2 Microphones
8.1.3 Headset
9 24 pin Audio Expansion....................................................................................................................................................31
9.1 Analog Microphones............................................................................................................................................. 31
9.2 Digital Microphones.............................................................................................................................................. 32
9.3 Line Out
10 Power management
10.1 DC Power Input
................................................................................................................................................................. 32
.............................................................................................................................................. 29
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....................................................................................................................................................... 33
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10.2 Power Source Selection
10.3 Power Consumption............................................................................................................................................33
10.4 Power Sequencing...............................................................................................................................................33
.......................................................................................................................................33
11 Buttons and status LED’s
11.1 Buttons
11.1.1 Volume up
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.............................................................................................................................................36
11.2.2 Bluetooth status....................................................................................................................................... 36
11.2.3 WiFi status................................................................................................................................................ 36
................................................................................................................................................................ 35
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11.2.4 Power Indicator LED................................................................................................................................. 36
12 Boot configuration
13 Mechanical size marking
..........................................................................................................................................................37
................................................................................................................................................ 38
1 Introduction
Electro-Magnetic Compatibility
Electro-Magnetic Interference
Global Positioning System
High Definition Multimedia Interface
Mobile Industry Processor Interface
Peripheral Component Interconnect Express
Serial Peripheral Interface
Universal Asynchronous Receiver/Transmitter
Wireless Local Area Network
Acronyms and abbreviation definitions
2 Key features
Qualcomm Snapdragon 820
Quad-core Qualcomm® Kryo™at up to 2.15GHz per core
64-Bit capable
Qualcomm® Adreno™530 624MHz GPU for PC-class graphics with support for advanced
APIs, including OpenGL ES 3.1+, OpenCL, DirectX, and content security
3GB LPDDR4 1866MHz
32GB UFS 2.0
SD 3.0 (UHS-I)
4K UltraHD@30fps video playback and capture with H.264 (AVC) and H.265 (HEVC)
Integrated Dual ISP with support for 3 image sensors up to 28MP
PCM/AAC+/MP3/WMA, ECNS, Audio+ post-processing (optional)
WLAN 2x2 802.11 b/g/n/ac 2.4 and 5GHz with on-board dual band WLAN antennas
Bluetooth v4.1 with on-board antenna
GbE Ethernet connection
One USB 2.0 micro B (device mode only)
Two USB 3.0 (host mode only)
GPS with On-board GPS antenna
MINI PCIe
One 40-pin Low Speed (LS) expansion connector
• UARTx2, SPI, I2S, I2C x2, GPIO x12, DC power
Primary 60-pin High Speed (HS) expansion connector
• 4L-MIPI DSI, USB, I2C x2, 2L+4L-MIPI CSI, SPI
Secondary 60-pin High Speed (HS) expansion connector
• 4L-MIPI DSI, DC power, 1.8V supply, I2C, Camera Flash control, Display control,
2 x GPIO,Sensor core SPI, 3 x UART, I2C
Audio support including:
• Stereo Speaker and Mono microphone via 3.5mm headset jack
•24 pin audio expansion connector
•3.3V supply, 2 x analog line in, 4 x analog line out, speaker amp control, 2 x
digital microphone links supporting a total of 4 microphones
•16 pin audio expansion connector
•stereo headset/line out, speaker and analog line in
Camera connector based upon 96boards camera interface addendum. 30 pin connector
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:
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
Switches
• Power/Reset
• Volume Up
• Volume down
6 LED indicators
• 4 - user controllable
• 2 - for radios (BT and WLAN activity)
Power,
Mechanical and
Environmental
Input voltage: +6.5V to +18V
Dimensions: 100mm by 85mm meeting 96Boards™ Consumer Edition ’extended’
dimensions specifications.
Operating Temp: 0°C to +40°C
RoHS and Reach compliant
(J7) Analog Expansion Connector
(J15) MINI PCIE Connector
(J20) Secondary High Speed Connector
(J21) 24 pin Audio Connector
(LED1) Power up indicator
(SH1)Shield Compartment containing
APQ8096/LPDDR4, PM8996, WGR7640
(S6) Power Button
(S5 S7) Vol+/Vol- Buttons
(J9) Primary High Speed Connector
(J4) Micro USB Type B Connector
3 What’s in the Box
The box contains one DB8 development Core Board and one DB8 development Carrier Board.
4 Getting started
● A 96Boards compliant power supply (sold separately by Arrow) Input voltage range of 6.5-18V, recommended
● A HDMI or DVI LCD Monitor that supports a minimum resolution of 1080P/30Hz
● HDMI-HDMI cable or HDMI-DVI cable to connect the board to the Monitor
●
A computer keyboard with USB interface
● A computer mouse with USB interface
4.1 Prerequisites
Before you power up your DB8 for the first time you will need the following:
input current of 2A minimum.
4.2 Starting the board for the first time
To start the board, follow these simple steps:
step 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. Ensure that the boot switches S1 are set to ‘0000’, all in Off position.
step 4. Connect the power supply to power connector J23.
step 5.
The board will start the booting process, and you should see Linux or Android boot up. The ’power up’ Green LED
‘LED1’ should illuminate.
Please note that the first boot takes 3-4 minutes due to first time initialization. Subsequent boot times should be faster in
the range of 1-2 minutes.
Plug the power supply into a power outlet.