Cyclone® V to Agilex™ 5 Device Migration Guide

ID 787947
Date 9/30/2024
Public
Document Table of Contents

2.12. External Memory Interface (EMIF)

External Memory Interface (EMIF) migration between Cyclone® V and Agilex™ 5 E-series devices is not possible because of the architectural differences between the two device families.

Memory standard support in Cyclone® V and Agilex™ 5 devices are mutually different in each other. You must select memory protocol that Agilex™ 5 devices support when planning to migrate from Cyclone® V devices. You must also consider either migrating to Agilex™ 5 E-series devices that support only component memory type or Agilex™ 5 D-series devices that support both Dual In-Line Memory Modules (DIMMs) and Component memory type.

For controller interface, Cyclone® V devices support Avalon® memory-mapped interface protocol while Agilex™ 5 devices support AXI protocol.

Supported External Memory Standards

The following table shows the supported memory standard for Cyclone® V and Agilex™ 5 devices:

Table 21.  Supported Memory Standards
Memory Standard Cyclone® V Agilex™ 5 E-Series Device Group A Agilex™ 5 E-Series Device Group B Agilex™ 5 D-Series
DDR5 Not supported Supported Not supported Supported
DDR4 Not supported Supported Supported Supported
DDR3 Supported Not supported Not supported Not supported
DDR2 Supported Not supported Not supported Not supported
LPDDR5 Not supported Supported Supported Supported
LPDDR4 Not supported Supported Supported Supported
LPDDR2 Supported Not supported Not supported Not supported
QDR-IV Not supported Not supported Not supported Supported