DDR3 and Flash question

[dfawt]

Dear support team, I have some questions regarding the A20 board:

In the schematics, they appears to be a 0 ohms resistor in series with every pin of the DDR3 bus. Are they neccesary? Because in the board we see the value of 22 ohms for all the resistor arrays.
Isn't the termination made thru the ODT function of the DDR3?
In the official schematic that resistors aren't present.

Also, is there an official complete datasheet for the A20? Because we will not be able to design a board only with this information. For example, I don't know how to select the boot method and if I'm able to boot from an microSD (not from nand-flash).

Thanks and best regards!
Diego

[dfawt]

Hello? 

[dfawt]

Do somebody know if there is available any complete datasheet of this SoC? Thanks

[tlhingan]

Did you try here?