Allwinner A20 User Manual download pdf (Page 31)

6.9 VGA connector

You would probably need an adapter cable for the VGA display (6-pin connector to 15-pin female

RGB cable). You can make the cable or the connection yourself or you can purchase the Olimex-

made cable: https://www.olimex.com/Products/Components/Cables/A20-VGA-CABLE/.Note that

you also have to change the script under Debian as explained in chapter 2.6 “Calibrating a display”.

Please note that you would need a specific Android image for the VGA output (with proper display

and output settings). We don't provide such image ready at the moment!

The VGA output has been tested only with the official Debian Linux image so far and it works fine

(after selecting the proper mode by executing ./change_display*.sh).

VGA 6-pin connector VGA 15-pin connector (back numbering)

Connector

pin #

Signal name Processor pin Connector pin #

(back numbering)

Color code (according

to the image below)

1 VGA-R AC17 1 RED

2 VGA-B AB16 3 BLUE

3 VGA-G AC16 2 GREEN

4 VGA_VSYNC AC9 14 BLACK

5 VGA_HSYNC AB9 13 BROWN

6 GND - 6 PINK

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Back view of the 15 pin connector

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Allwinner A20 User Manual Page 31