Nios® II Processor Reference Guide

ID 683836
Date 8/28/2023
Document Table of Contents Configurable Cache Memory Options

The cache memories are optional. The need for higher memory performance (and by association, the need for cache memory) is application dependent. Many applications require the smallest possible processor core, and can trade-off performance for size.

A Nios® II processor core might include one, both, or neither of the cache memories. Furthermore, for cores that provide data as well as instruction cache, the sizes of the cache memories are user-configurable. The inclusion of cache memory does not affect the functionality of programs, but it does affect the speed at which the processor fetches instructions and reads/writes data.