[Arm-netbook] A minimal A10 SBC
luke.leighton
luke.leighton at gmail.com
Fri Mar 29 05:34:46 GMT 2013
On Fri, Mar 29, 2013 at 2:04 AM, Ajith Kumar <bpajith at gmail.com> wrote:
>
>> ground layer next to the DDR3 tracks to get the characteristic impedance
>>
>> > correct and also to give good return path. Something like:
>> > L1 : tracks , L2 : ground, L3 : power, L4 : tracks, L5 : GND, L6 :
>> > tracks
>>
>> that looks about right.
>>
>> > Since you already have done it,
>>
>> i have not. what i have done is asked SoC manufacturers to supply
>>
>> full EVB schematics. i have then NOT ONCE MADE ONE SINGLE ALTERATION
>> TO THE DDR3 LAYOUT, precisely because i know that it is beyond my
>
>
> Hi Luke, This is the only uncertain stuff I think, I go by the old saying
> "When you don't get what you want, what you get is experience". I have no
> other option.
:)
> If you find time, please check for mistakes in the DDR part of the
> schematic. I have uploaded with some more changes. I have the A13 core board
> from WITS, that gives some idea about the AXP209 layout.
lovely.
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