Intel® Quartus® Prime Pro Edition User Guide: Design Compilation

ID 683236
Date 12/19/2022

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Document Table of Contents Bundled Instances

To improve schematic readability, the RTL Analyzer bundles single-bit instances into a collection known as a bundled instance and hides unconnected pins of instances by default.

Bundled instances appear stacked, and the indexes of the bits appear in the instance name as left and right indexes. You can expand bundled instances to view single-bit instance members in the hierarchy browser. You can view more information about a bundled instance, such as the number of instances, left and right index, and instance members from the Property viewer.

In the following figure, count_int[31:0] is a bundled instance, where 31 is the left index and 0 is the right index. Under the Objects pane (hierarchy browser), count_int[0], count_int[10], count_int[11], and so on are single-bit instance members.

Figure 26. Bundled Instance

If you want to view individual bits of a bundled instance within the schematic viewer, select the pin bus, right-click to display the context-sensitive menu, and click Display Individual Bits. The Connectivity Details dialog box displays showing connectivity details of the single-bit instances.

Figure 27. Connectivity Details of Single-bit Instances

Within the Connectivity Details dialog box, you can select the first individual instance, right-click to display the context-sensitive menu, and select View in Schematic. The first object in the hierarchy gets highlighted automatically.

Figure 28. View Connectivity Details in the Schematic Viewer

Viewing Unbundled Instances

To view unbundled instances, launch your design in the schematic viewer and select New Tab with Unbundle Instance from the tab's context-sensitive menu.

Figure 29. Opening a New Tab with Unbundle Instance

In this tab, you get unbundled view of the bundled instances in the schematic viewer. This mode is helpful when you want to view single-bit instances of a bundled object.

In the following example, when you view the design in the default no interface mode (left), you observe that the instances reduce_xor_3[1:0] and rb[1:0] are bundled. However, within the unbundle instance mode (right), you can view single-bit instances reduce_xor_3, reduce_xor_2, rb[1], and rb[1].

Figure 30. Example of Bundled and Unbundled Instances