OLIMEX A20-OLX-LIME [3/49] Chapter 1 overview 5

OLIMEX© 2015 A20-OLinuXino-LIME user's manual

Table of Contents

DISCLAIMER ............................................................................................................. 2

CHAPTER 1: OVERVIEW ........................................................................................ 5

1. Introduction to the chapter ....................................................................................................... 5

1.1 Features ..................................................................................................................................... 5

1.2 Target market and purpose of the board ............................................................................... 6

1.3 Board variants .......................................................................................................................... 6

2.3 Powering the board ................................................................................................................ 10

2.4 Button functions ..................................................................................................................... 11

2.5 Interacting with the board .................................................................................................... 11

2.5.1 Serial connection at UART0 ........................................................................................................................ 12

2.5.2 HDMI monitor .............................................................................................................................................. 12

2.5.3 LCD display .................................................................................................................................................. 13

2.5.4 SSH via mini USB cable in Debian ............................................................................................................. 13

2.5.5 SSH via Ethernet connector ........................................................................................................................ 13

2.6 Changing the default image resolution ................................................................................ 13

2.7 Connecting and calibrating a display ................................................................................... 16

3. Introduction to the chapter ..................................................................................................... 20

3.1 Layout (top view) ................................................................................................................... 20

3.2 Layout (bottom view) ............................................................................................................. 21

CHAPTER 4: THE ALLWINNER A20 MICROCONTROLLER ....................... 22

4. Introduction to the chapter ..................................................................................................... 22

4.1 The processor ......................................................................................................................... 22

4.2 Block diagram ........................................................................................................................ 23

CHAPTER 5: CONTROL CIRCUITY ................................................................... 24

5. Introduction to the chapter ..................................................................................................... 24

5.1 Reset ........................................................................................................................................ 24