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A20-OLINUXINO-LIME2
OLIMEX A20-OLINUXINO-LIME2 User Manual
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A20-OLINUXINO-LIME2
and
A20-OLINUXINO-LIME2-4GB
Open-sour
ce single-board
Andr
oid/Linux mini-computer
USER’S MANUAL
Document revis
ion G, September 2017
Designed by OLIMEX Ltd, 2014
All boards produced by Olimex L
TD are ROHS compliant
2
Table of Contents
Default Chapter
2
Disclaimer
2
Table of Contents
3
Chapter 1: Overview
5
Introduction to the Chapter
5
Features
5
Target Market and Purpose of the Board
6
Board Variants
6
Board Version Used in the Manual
7
Document Organization
8
Chapter 2: Setting up the Olinuxino Board
9
Introduction to the Chapter
9
Electrostatic and Electrical Polarity Warning
9
Requirements
9
Powering the Board
11
Button Functions
12
Interacting with the Board
12
Serial Connection at UART0
12
HDMI Monitor
13
LCD Display
13
SSH Via Mini USB Cable in Debian
13
SSH Via Ethernet Connector
14
Changing the Default Video Output Resolution
14
Connecting and Calibrating a Display
17
Android Calibration
17
Debian Calibration
18
GPIO under Debian
18
I2C and SPI under Debian
19
Software Support
19
Chapter 3: A20-Olinuxino-Lime2 Board Description
21
Introduction to the Chapter
21
Layout (Top View)
21
Layout (Bottom View)
22
Chapter 4: The Allwinner A20 Microcontroller
23
Introduction to the Chapter
23
The Processor
23
Block Diagram
24
Chapter 5: Control Circuity
25
Introduction to the Chapter
25
Reset
25
Clocks
25
Power Supply Circuit
25
Chapter 6: Connectors and Pinout
26
Introduction to the Chapter
26
UART0 Interface
26
Microsd Card Connector
26
SD/MMC1 Slot
26
PWR Jack
28
Usb_Otg
28
USB_HOST Connectors
30
Gigabit Ethernet
31
HDMI Connector
32
SATA Connector and Power
33
GPIO Connectors
33
GPIO-1 (General Purpose Input/Output) 40Pin Connector
34
GPIO-2 (General Purpose Input/Output) 40Pin Connector
36
GPIO-3 (General Purpose Input/Output) 40Pin Connector
37
GPIO-4 (General Purpose Input/Output) 20Pin Connector
37
LCD_CON 40Pin Connector
38
Jumper Description
40
Additional Hardware Components
41
Chapter 7: Schematics
42
Introduction to the Chapter
42
Eagle Schematic
42
Physical Dimensions
43
Chapter 8: Revision History and Support
44
Introduction to the Chapter
44
Document Revision
44
Board Revision
45
Useful Web Links and Purchase Codes
45
Frequently Asked Questions
47
Product Support
51
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OLIMEX A20-OLINUXINO-LIME2 Specifications
General
Brand
OLIMEX
Model
A20-OLINUXINO-LIME2
Category
Single board computers
Language
English
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