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

ID 772538
Date 7/08/2024
Public
Document Table of Contents

8.3.5. 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 60. Data Signal Group Routing on PCB to Memory Down Configuration