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

ID 683819
Date 10/13/2021

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Document Table of Contents Sequential Triggering

When you specify a sequential trigger the Signal Tap logic analyzer sequentially evaluates each the conditions. The sequential triggering flow allows you to cascade up to 10 levels of triggering conditions.

When the last triggering condition evaluates to TRUE, the Signal Tap logic analyzer starts the data acquisition. For segmented buffers, every acquisition segment after the first starts on the last condition that you specified. The Signal Tap Node annotates this final condition column with Seg if a segmented buffer is enabled. The Simple Sequential Triggering feature allows you to specify basic triggers, comparison triggers, advanced triggers, or a mix of all three. The following figure illustrates the simple sequential triggering flow for non-segmented and segmented buffers. The acquisition buffer starts capture when all n triggering levels are satisfied, where n <10.

Figure 51. Sequential Triggering Flow

The Signal Tap logic analyzer considers external triggers as level 0, evaluating external triggers before any other trigger condition.