Home > AllWinner A2X, Linux, Programming > AllWinner A20 Linux Source Code, EVB Schematics and Product Brief

AllWinner A20 Linux Source Code, EVB Schematics and Product Brief

Hardware based on AllWinner A20 such as Cloudsto Media PC PRO DRIVEDOCK, should start to be available soon, and resources for developers have been slowly released (or leaked) to the community.

AllWinner A20 Source Code

The source code for AllWinner A20 and A31 has been released to sunxi-linux a while back, and they have started to clean up the code before hardware becomes available. The code apparently hasn’t made it to sunxi-linux github account just yet, but Linux for A20  has been imported into github at https://github.com/amery/linux-allwinner/tree/import/lichee-3.3/a20-dev. AllWinner A20 is known as sun7i in the code.

AllWinner A20 Evaluation Board Schematics and Product Brief

Olimex received A20 EVB schematics and product brief from AllWinner earlier this week, and as usual, they promptly uploaded those documents to their github account. The 3-page product brief does not bring anything new, and the data sheet does not seem to be available right now. The schematics are both available in PDF and Orcad (.DSN) format, so it should be easy to adapt them to your own design as long as you use Orcad.

AllWinner A20 Evaluation Board Block Diagram

AllWinner A20 Evaluation Board Block Diagram

Olimex did a detailed analysis of A20 schematics, and compared it to A10 schematics to see if AllWinner A20 is really pin-to-pin compatible with AllWinner A10. Although it’s possible to make a board that works with both SoC,and Olimex just plan to do that with their A10/A20 development board, the conclusion is that existing boards are unlikely to be compatible and some modifications are needed.

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  1. shark
    April 6th, 2013 at 13:17 | #1

    Perfect, it looks as if the allwinner product had good linux support than the other one.

  2. yspeed
    June 8th, 2013 at 19:33 | #2

    which version of orcad we need to use to open AllWinner A20 Evaluation Board Schematics (*.DSN)

  3. yspeed
    June 8th, 2013 at 19:37 | #3

    which version of pcb tool do i need to use to open “A20_PAD_STD_V1_1.rar” dsb file?

  4. Gabe
    June 23rd, 2013 at 22:39 | #4
  5. June 24th, 2013 at 09:42 | #5

    @Gabe
    Thanks. I like how Chinese websites never require registration to download.
    I’ve mirrored it just in case – http://www.cnx-software.com/pdf/datasheet/A20%20Datasheet%20v1.0%2020130227_water_bbs.pdf

    Edit: :o 35 pages only for a SoC datasheet! Well, I guess it’s better than nothing.

  6. June 24th, 2013 at 09:47 | #6

    @cnxsoft
    It’s incomplete… They removed the “pins description” and “electrical characteristics” sections.

  7. cuauh
    July 27th, 2014 at 21:55 | #7

    how unlock this tablet?

  8. July 28th, 2014 at 09:18 | #8

    @cuauh
    Tablet? Which tablet?

  1. April 8th, 2013 at 14:54 | #1
  2. April 13th, 2013 at 16:15 | #2
  3. May 11th, 2013 at 09:25 | #3
  4. May 25th, 2013 at 10:50 | #4