Intel® MAX™ 10 Embedded Memory User Guide

ID 683431
Date 9/17/2021
Public
Document Table of Contents

3.5. Selecting Read-During-Write Output Choices

  • Single-port RAM supports only same-port read-during-write. The clock mode must be either single clock mode or input/output clock mode.
  • Simple dual-port RAM supports only mixed-port read-during-write. The clock mode must be either single clock mode, or input/output clock mode.
  • True dual-port RAM supports same port read-during-write and mixed-port read-during-write:
    • For same port read-during-write, the clock mode must be either single clock mode, input/output clock mode, or independent clock mode.
    • For mixed port read-during-write, the clock mode must be either single clock mode, or input/output clock mode.
Note: If you are not concerned about the output when read-during-write occurs and want to improve performance, select Don't Care. Selecting Don't Care increases the flexibility in the type of memory block being used if you do not assign block type when you instantiate the memory block.
Table 12.  Output Choices for the Same-Port and Mixed-Port Read-During-Write
Memory Block Single-Port RAM Simple Dual-Port RAM True Dual-Port RAM
Same-Port Read-During-Write Mixed-Port Read-During-Write Same-Port Read-During-Write Mixed-Port Read-During-Write
M9K
  • Don’t Care
  • New Data
  • Old Data
  • Old Data
  • Don’t Care
  • New Data
  • Old Data
  • Old Data
  • Don’t Care

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