Agilex™ 7 FPGA I-Series Development Kit User Guide

ID 683288
Date 5/31/2024
Public
Document Table of Contents

A.10. Memory Interfaces

This memory information applies to DK-DEV-AGI027RES and DK-DEV-AGI027R1BES.

Three independent memory interfaces are supported: Two independent on-board DDR4 and one dual DIMM sockets for DDR4.

  • The on-board DDR4 uses five 16 Gb DDR4 single rank devices connecting to Bank 2B, 2E for memory component channel 0 and bank 2C, 2F for memory component channel 1. The total memory size of each channel is 16 GB running at 1200 MHz.
  • The two 288-pin DIMM sockets interface to bank 3C, 3D for Dual DIMM memory. These sockets accept DDR4 module. These DIMM support dual rank at frequency 1333 MHZ 16 GB per channel, and single rank at 1333 MHZ 8 GB per channel.
    • Some board re-work is required for using DIMM sockets in 2-DPC configuration or different kinds of DDR4 modules. For more details of the resistor connections required to be present for the type of configuration used, refer to board schematic table.
  • The 1.2 V DDR power supply is designed to support up to 12 A currents to the two DIMM slots. This is sufficient to support 64 GB DIMMs in both slots (128 GB in total). If higher capacity DIMM has to be supported, the DDR power supply design must be updated to use a higher rated 1.2 V voltage regulator based on the current requirement of the DIMMs.
This memory information applies to DK-DEV-AGI027RBES and DK-DEV-AGI027-RA.
  • The on-board DDR4 uses five 16 Gb DDR4 single rank devices connecting to Bank 3A, 3B for memory component channel 0 and bank 3C, 3D for memory component channel 1. The total memory size of each channel is 16 GB running at 1200 MHz.
  • The two 288-pin DIMM sockets interface to bank 2B, 2E for Dual DIMM memory channel 2 and bank 2F, 2C for Dual DIMM memory channel 1. These sockets accept DDR4 modules. These DIMM support dual rank at frequency 1200 MHZ 16 GB per channel, and single rank at 1200 MHZ 8 GB per channel.
  • The 1.2 V DDR power supply is designed to support up to 12 A currents to the two DIMM slots. This is sufficient to support 64 GB DIMMs in both slots (128 GB in total). If higher capacity DIMM has to be supported, the DDR power supply design must be updated to use a higher rated 1.2 V voltage regulator based on the current requirement of the DIMMs.