External Memory Interfaces Intel® Agilex™ FPGA IP User Guide

ID 683216
Date 1/31/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

11.6.1.2.3. Power System

Some memory interfaces draw current in spikes from their power delivery system as SDRAMs are based on capacitive memory cells.

Rows are read and refreshed one at a time, which causes dynamic currents that can stress any power distribution network (PDN). The various power rails should be checked either at or as close as possible to the SDRAM power pins. Ideally, you should use a real-time oscilloscope set to fast glitch triggering to check the power rails.