Intel® Quartus® Prime Pro Edition User Guide: Debug Tools

ID 683819
Date 10/02/2023

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Document Table of Contents Start/Stop Mode

The Start/Stop mode uses two sets of conditions, one to start data capture and one to stop data capture. If the start condition evaluates to TRUE, the Signal Tap logic analyzer stores the buffer data every clock cycle until the stop condition evaluates to TRUE, which then pauses the data capture. The logic analyzer ignores additional start signals received after the data capture starts. If both start and stop evaluate to TRUE at the same time, the logic analyzer captures a single cycle.
Note: You can force a trigger by pressing the Stop button if the buffer fails to fill to completion due to a stop condition or if the start condition never occurs.
Figure 69. Start/Stop Mode Storage Qualifier Setup
Figure 70. Comparing Continuous and Start/Stop Acquisition Modes for a Recurring Data Pattern
  • Continuous Mode:

  • Start/Stop Storage Qualifier: