I'm just upgrading the SDRAM on my build from 4GB DDR3 SDRAM to 4GB LPDDR4 SDRAM & currently following the Nanopi M4V2's schematic detailing the decoupling capacitors to connect to the relevant pins.
After setting everything up, I noticed on the schematic drawing that was 1* VCC_DDR & 3* VCC_DDRC connections for the SDRAM chip; however when looking at the respective decoupling capacitors there is 2* VCC_DDR & 2* VCC_DDRC connections. So I'm curious as to whether they in fact messed up the label on 1 of the VCC_DDRC's and that it is actually meant to be an VCC_DDR or not?
Also how do I distinguish which decoupling capacitor components I should connect to which pin or do I simply connect all of the DDRC's to the 2* VCC_DDRC decouplers and vice versa for the single VCC_DDR to the 2* VCC_DDR decoouplers?
Bradyen
Permalinkhey what are you building with your nano pi anyway?
decoupling capacitors can be identified if the other end is connected to ground. also 2* VCC_DDR & 2* VCC_DDRC looks like a printing mistake to me not sure though. can you share the link to the shematic you are talking about!
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Joined August 14, 2018 44Tuesday at 03:25 PM