unknown board

[xaba55]

Please help.
We bought a board on AliExpress, but no one provided any documentation. And I can't ask the seller for it.
Can anyone share any information? It's very difficult to figure out which pin goes where without documentation on the circuit diagrams.

But given my situation, I set up two Ethernet interfaces. I haven't tested them at full capacity, but I can ping from both networks...

myd lt527m 16e2d 180 e sx

Thanks a lot.

Edited Monday at 09:23 AM by xaba55
дополнение

[Werner]

moved. Has nothing to do with opi4a. 

Remove heatsink to get an idea which SoC hides beneath

[xaba55]

This is a MYD-lt527m-16e2d-180-e-sx board.
Allwinner T527 chip.
The seller isn't helping.
It's hard to figure out how the peripherals are connected.

[Werner]

Without schematics, deep knowledgde and a lot of time to waste, this task is probably close to impossible.

Only chance I see here is for once assuming the vendor is lazy and the implementation is as close to reference design as it can get. And for the other that there is some android device tree which can be reverse-engineered. 

[xaba55]

Thanks. Regarding Android, it seems to be the most optimal.
But I was still hoping someone would have a schematic

[Werner]

Have you tried to reach out to the manufactur?

https://www.mouser.at/datasheet/3/2627/1/MYD-LT527-SX.pdf

 

Website: en.myir.cn
Email: sales@myir.cn
Tel: +86-755-22984836

[xaba55]

I reread it, but the information is not publicly available.

Contact them directly?
I haven't tried. Maybe they can help.
Thanks for your time. I'll write back later; maybe someone will be interested.

Edited 1 hour ago by xaba55