External Memory Interfaces Intel Agilex® 7 M-Series FPGA IP User Guide

ID 772538
Date 10/02/2023

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7.3.6. DRAM Break-in Layout Guidelines

For discrete DRAM components on PCB, you can use either the dog-bone or via in pad at the DRAM for the signal transition from inner layer to DRAM.

If you use dog-bone via transitions, you should separate them with larger pitch, to avoid crosstalk between the signal vias.

Figure 41. Data Signal Group Routing on PCB to Memory Down Configuration