Nios® V Embedded Processor Design Handbook

ID 726952
Date 7/08/2024
Public
Document Table of Contents

6.2.3.2.4. Assigning the Acquisition Clock, Sample Depth, and Memory Type, and Buffer Acquisition Mode

You must specify a clock signal to control the acquisition of samples. Specify the clock signal in the Signal Configuration pane of the Signal Tap window. Altera recommends that you select the clock signal that the Nios® V processor uses as the Signal Tap acquisition clock. Using the Nios® V processor clock ensures that the captured instruction trace data accurately corresponds to the instruction execution of the Nios® V processor.

You must configure the capture session's sample depth, memory type, and buffer acquisition mode. These configuration options are accessible through the Signal Configuration pane. Exercise care when selecting the Sample Depth size. Capturing many signals for every sample taken can quickly deplete available memory resources. Use the Signal Tap built-in resource estimator to understand better how adjusting the sample depth parameter impacts your design.