SDRAM XS v2.2 Schematic Help

NivagSwedna
Posts: 3
Joined: Sun Nov 08, 2020 11:35 am

SDRAM XS v2.2 Schematic Help

Unread post by NivagSwedna »

My first post so posting in Newcomers as not sure where h/w questions go...

In the longer term I'm planning on creating a board that will include SDRAM and in the first instance I am trying to understand the schematic of xs_2.2...

pin15 LDQM and pin39 UDQM do not appear on the schematic but looking at the PCB it seems they are connected to the A11 and A12 nets respectively?

Also... Has anyone ever measured the trace lengths from the Cyclone V to the pins in GPIO0? I would hate to have to repeat that unnecessarily.

Thanks in advance.

PS
I am a long term lurker... bought my DE10-Nano over 2 years ago but am yet to run Mister on it.
NivagSwedna
Posts: 3
Joined: Sun Nov 08, 2020 11:35 am

Re: SDRAM XS v2.2 Schematic Help

Unread post by NivagSwedna »

Ah... they are on the schematic just labelled A11 and A12... ok. np
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