Marvell ARMADA 88F6810 Hardware Design Manual page 89

The RESETn signal is not synchronized to any other SDRAM signals and should be treated on

the board as an asynchronous signal.It must be separated from all other signals.
Marvell recommends using address mirroring in clamshell topologies. Address mirroring can be

applied to either one of the chip selects. Refer to the device Functional Specifications for the
exact swapped bits definition.
In clamshell topologies, when more than 2 devices are connected to the same clock, each chip

select rank should be connected to a different clock signal.
Copyright © 2017 Marvell
August 30, 2017 Document Classification: Public
32-bit SDRAM DDR4 Interface
Interface Signals Layout Guidelines
Doc. No. MV-S302310-U0 Rev. A
Page 79