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Agilex 5 FPGAs and SoCs: External Memory Interfaces (EMIF) IP User Guide

This guide details the External Memory Interfaces (EMIF) IP for Agilex 5 FPGAs and SoCs. It covers the IP's architecture, protocols supported (DDR4, LPDDR4, LPDDR5), design flow, simulation, timing closure, and debugging strategies.

Introduction to EMIF IP

The Agilex 5 EMIF IP is designed for high-speed memory interfaces, offering efficient and low-latency communication with modern memory devices. This IP core integrates a physical layer (PHY) for data path management and timing, along with a memory controller for handling memory commands and protocol requirements.

For detailed specifications and maximum speed support, refer to the External Memory Interface Spec Estimator.

Key Features and Architecture

The EMIF IP architecture includes several key hardware features:

  • Hard Sequencer: Manages memory calibration across I/O banks.
  • Hard PHY: Simplifies timing closure and power management.
  • Hard Memory Controller: Reduces latency and core logic usage for DDR4 and LPDDR4 protocols.
  • High-Speed PHY Clock Tree: Ensures low jitter and stable clocking for data transfers.
  • Automatic Clock Phase Alignment: Minimizes clock skew for improved timing.

Design Flow and Support

The guide outlines the recommended design flow, starting from determining memory requirements, selecting an FPGA, parameterizing and generating the EMIF IP, and proceeding through simulation, pin assignments, board simulation, timing closure, and hardware verification.

The Agilex 5 EMIF IP supports DDR4, LPDDR4, and LPDDR5 memory protocols, with specific considerations for different device groups and interface widths.

Models: 817467, 817468, External Memory Interfaces, Memory Interfaces, Interfaces

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