Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs

ID 814346
Date 11/27/2024
Public
Document Table of Contents

A.2.6.7. Data Target Sequential Access Detection

The QSPI Flash controller detects sequential accesses to the data target interface by comparing the current access with the previous access. An access is sequential when it meets the following conditions:

  • The address of the current access sequentially follows the address of the previous access.
  • The direction of the current access (read or write) is the same as previous access.
  • The size of the current access (byte, half-word, or word) is the same as previous access.

When the access is detected as nonsequential, the sequential access to the Flash device is terminated and a new sequential access begins. Altera recommends accessing the data target sequentially. Sequential access has less command overhead, and therefore, increases data throughput.