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DM36x DDR2 power supply/plane

Greg12339
Prodigy 100 points

Hi,

Reviewing the DM365 EVM rev C, it looks like they have included a capacitive EMI filter between the CPU_VCC_1V8 and the DDR_VDD. This effectively results in DDR_VDD and CPU_VDD_DDR not sharing the same power plane.

Your layout guidelines recommend having a solid 1.8V power plane under the DDR2 keepout region.  I imagine this means that DDR_VDD and CPU_VDD_DDR should share the same power plane, but I would like to confirm with you.

Please advise.

thanks,

Greg