Introduction
This user guide details the Intel Agilex 7 M-Series FPGA External Memory Interfaces (EMIF) IP. This IP provides fast, efficient, and low-latency interfaces for high-speed memory devices, implementable through the Intel Quartus Prime software.
The EMIF IP comprises a physical layer interface (PHY) for data path management and timing transfers, and a memory controller for handling memory commands and protocol requirements.
Supported Memory Protocols
- DDR4
- DDR5
- LPDDR5
Each protocol is supported with a hard memory controller and hard PHY.
Key Architectural Features
- Hard Sequencer: Utilizes a hardened Nios II processor for memory calibration and protocol handling.
- Hard PHY: Integrated silicon circuitry to simplify timing closure and reduce power consumption.
- Hard Memory Controller: Offers reduced latency and core logic usage, supporting various memory standards.
- High-Speed PHY Clock Tree: Provides low jitter and low duty cycle distortion for data valid windows.
Design and Implementation
The document provides comprehensive guidance on the EMIF IP design flow, including parameterization, pin planning, board design considerations, and simulation. It aims to assist users in achieving optimal performance and timing closure for their FPGA designs.
For information on supported speeds, consult the External Memory Interface Spec Estimator.