Geniatech DB8 User manual

Developer Board 8
Hardware UserGuide
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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................................................................................................................................................................. 14
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..................................................................................................................................................14
5.8 USB Ports............................................................................................................................................................... 15
5.8.1 USB-Host ports........................................................................................................................................... 15
5.8.2 USB-Device port......................................................................................................................................... 15
5.9 Audio......................................................................................................................................................................15
5.9.1 BT Audio..................................................................................................................................................... 15
5.9.2 HDMI Audio................................................................................................................................................ 15

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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}............................................................................................................................................................. 19
6.2 I2C {0/1}.................................................................................................................................................................19
6.3 GPIO {A-L}.............................................................................................................................................................. 20
6.4 SPI 0....................................................................................................................................................................... 20
6.5 PCM/I2S................................................................................................................................................................. 20
6.6 Power and Reset....................................................................................................................................................20
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................................................................................................................................................... 23
7.1.2 MIPI CSI {0/1}............................................................................................................................................. 24
7.1.3 I2C {2/3}......................................................................................................................................................24

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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.................................................................................. 28
8 Analog Expansion Connectors..........................................................................................................................................29
8.1 16-pin Analog Connector...................................................................................................................................... 29
8.1.1Earpiece.......................................................................................................................................................29
8.1.2 Microphones.............................................................................................................................................. 29
8.1.3 Headset.......................................................................................................................................................30
9 24 pin Audio Expansion.................................................................................................................................................... 31
9.1 Analog Microphones............................................................................................................................................. 31
9.2 Digital Microphones.............................................................................................................................................. 32
9.3 Line Out................................................................................................................................................................. 32
10 Power management....................................................................................................................................................... 33
10.1 DC Power Input....................................................................................................................................................33

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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............................................................................................................................................. 36
11.2.2 Bluetooth status....................................................................................................................................... 36
11.2.3 WiFi status................................................................................................................................................ 36
11.2.4 Power Indicator LED................................................................................................................................. 36
12 Boot configuration..........................................................................................................................................................37
13 Mechanical size marking................................................................................................................................................ 38

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1 Introduction
Acronyms and abbreviation definitions
Acronym /
Abbreviation
Definition
BOM
Bill Of Materials
BT
Blue Tooth
CLK
Clock
CPU
Central Processing Unit
CS
Chip Select
CSI
Camera Serial Interface
DSI
Display Serial Interface
EMC
Electro-Magnetic Compatibility
EMI
Electro-Magnetic Interference
EN
ENable
ESD
Electro-Static Discharge
GND
GrouND
GPIO
General Purpose I/O
GPS
Global Positioning System
HDMI
High Definition Multimedia Interface
I2C
Inter-Integrated Circuit
I2S
Inter-IC Sound
INT
INTerrupt
ISP
Image Sensor Processor
LDO
Low Drop-Out
LRM
Linear Resonant Actuator
LTE
Long-Term Evolution
MDP
Mobile Display Port
MI2S
Mobile Inter-IC Sound
MIC
Microphone
MIPI
Mobile Industry Processor Interface
MPP
Multi-Purpose Pin
NFC
Near Field Communication
PCB
Printed Circuit Board
PCIE
Peripheral Component Interconnect Express
PWM
Pulse-Width Modulation
RF
Radio Frequency
RX
Receive
SCL
Serial CLock
SDA
Serial DAta
SDC
Secure Digital Interface
SOM
System On Module
SPI
Serial Peripheral Interface
SSC
Snapdragon™Sensor Core
TX
Transmit
UART
Universal Asynchronous Receiver/Transmitter
UIM
User Interface Module
USB
Universal Serial Bus
WLAN
Wireless Local Area Network

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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:
Processor
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
Memory/
Storage
3GB LPDDR4 1866MHz
32GB UFS 2.0
SD 3.0 (UHS-I)
Video
4K UltraHD@30fps video playback and capture with H.264 (AVC) and H.265 (HEVC)
Camera Support
Integrated Dual ISP with support for 3 image sensors up to 28MP
Audio
PCM/AAC+/MP3/WMA, ECNS, Audio+ post-processing (optional)
Connectivity
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
I/O Interfaces
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

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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
Micro SD card slot
User Interface
Switches
• Power/Reset
• Volume Up
• Volume down
6 LED indicators
• 4 - user controllable
• 2 - for radios (BT and WLAN activity)
OS-support
Linux Debian
Android
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

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2.1 Board overview
1.
(J11) Ethernet Connector
2.
(J23) Power Jack
3.
(J7) Analog Expansion Connector
4.
(J15) MINI PCIE Connector
5.
(J16) 3.5mm Headset Jack
6.
(J20) Secondary High Speed Connector
7.
(J21) 24 pin Audio Connector
8.
(J8) Low Speed Connector
9.
(LED1) Power up indicator
10.
(GPS)GPS Antenna
11.
(SH1)Shield Compartment containing
APQ8096/LPDDR4, PM8996, WGR7640
12.
(S6) Power Button
(S5 S7) Vol+/Vol- Buttons
13.
(J24) microSD connector
14.
(J9) Primary High Speed Connector
15.
(J6)HDMI Connector
16.
(J4) Micro USB Type B Connector
17.
Bluetooth/WLAN LED’s
18.
(J3) USB Host1 connector
19.
User LEDs 1-4
20.
(J2) USB Host2 connector
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(J38)WLAN/BT Antenna
22.
(J40)WLAN Antenna2
23.
(S1) Boot Switches

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