Test Engine FPGA IP User Guide: Agilex™ 3, Agilex™ 5, and Agilex™ 7 FPGAs

ID 817758
Date 3/31/2025
Public
Document Table of Contents

5.3.1.3. EMIF traffic patterns (for IO96B architecture)

Traffic programs for External Memory Interfaces (EMIF) IP's AXI interface for devices with IO96B I/O architecture.

Detailed Description

Some characteristics of the traffic patterns:
  • A "full" access uses the minimum AXI burst-length that fully utilizes all beats in the DRAM's burst access.

  • A "partial" access does not utilize all beats in the DRAM's burst and hence can trigger byte-enables (on the DM pins, if enabled) or read-modify-write (only applies to DDR5).

  • Some EMIF configurations can result in inaccesible address regions (ex: In-Line ECC reserves the upper 1/8th of the address space). The traffic programs auto-adapt to access the legal address space.

Supported devices:
  • Agilex 7 M-Series

  • Agilex 5 E-Series

  • Agilex 5 D-Series