Device Configuration User Guide: Agilex™ 5 FPGAs and SoCs

ID 813773
Date 7/24/2024
Public
Document Table of Contents

3.2.7.1. Understanding Quad SPI Flash Byte-Addressing

At power-on, the SDM operates from boot ROM. The SDM loads configuration firmware from Quad SPI flash using 3-byte addressing. Once loaded, if the flash size is 256 Mb or larger, the SDM configures the Quad SPI flash to operate in 4-byte addressing mode and continues to load the rest of the bitstream until configuration completes.
Agilex™ 5 devices support generic QSPI flash controllers that are capable of supporting any Quad SPI flash devices that meet both the following criteria:
  • Supports Serial Flash Discoverable Parameter (SFDP) standard
  • Supports dedicated pin reset

Agilex™ 5 devices support various third-party flash devices operating at 1.8 V. For more details, refer to Intel Supported Third Party Configuration Devices.