[MinnowBoard] 4GB Ram need pcb rerouting?
Joe Tom Collins
ratteler at gmail.com
Thu Jun 16 20:47:32 UTC 2016
Is the board really than much smaller than an SO DIMM?
The specs I have for the Turbot are 99mm x 74mm
And SO-DIMM comes in 68mm round numbers.
This is why I suggested it be on a shield with a separate RAM Expansion
connector.
I know things are tight, but what if expansion was ENTIRELY on a shield
with a SO-DIMM Slot or two?
The connector would merely expose the processor's normal lines for
addressing RAM, and all the glue to make it work would be on the shield.
Maybe a plcc type socket directly under the processor. It shouldn't be much
thicker than the HSE connector, and could provide an HSE pass-though while
maintaining board size.
I know 32GB was a bit of pipe dream. Even my ITX systems can only handle
16GB. LOL.
But an 8GB options would be sweet!
Alternatively, is there a way to just put a socket for the RAM chip on the
board, and let the user upgrade the RAM chips? You could ship with 2GB and
people could upgrade without SMT soldering gear.
SATA isn't as big an issue for me. MicroSD tech is moving at a good pace
with speed and capacity.
Maybe 2 stacked UHS-I/U3 SDXC slots if you can find a connector. That WOULD
be cool.
But since SATA is already in there, I don't suggest removing it. LOL!
If you DID add a dedicated RAM connector, maybe a SATA chipset that does
supports port SATA port multipliers
could go on there to make people who want that happy.
You could even isolate your 12V lines there, since at this point everything
that requires 12V would be under the Minnowboard.
On another note... 300 out 100 cool points for being able to get same day
feedback from the Engineering Dev's!!!!
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