Intel® FPGA Power and Thermal Calculator User Guide

ID 683445
Date 9/26/2022
Public
Document Table of Contents

3.4.1. Entering Hierarchy Information Into the Intel® FPGA PTC

If you want Intel® FPGA Power and Thermal Calculator (PTC) estimation to reflect your design hierarchy, you must first enter (or import from a prior PTC session) your design's power data and hierarchy level information into the Intel® FPGA PTC data entry pages. The Intel® FPGA PTC then reports, in watts, the subtotals of the power consumed by each architectural feature, for each level of design hierarchy.

When entering levels of hierarchy in the Intel® FPGA PTC, the pipe character (|) denotes a level of hierarchy. For example, the following notation indicates three levels of hierarchy. Hierarchy a is the highest level. Hierarchy b is the second level. Hierarchy c is the third level.

a|b|c

When you enter a module name for a given hierarchy, the Intel® FPGA PTC automatically updates the module name on all data entry pages that include that hierarchy.

To enter design hierarchy information into the Intel® FPGA PTC, follow these steps:

  1. Open your version of the Intel® FPGA PTC, as Accessing the Intel FPGA Power and Thermal Calculators describes.
  2. Click the View menu and select one of the Intel® FPGA PTC pages, such as the Logic page.
    Figure 2.  Intel® FPGA PTC Logic Page


  3. In the Full Hierarchy Name cell, type the hierarchical name of a hierarchy in your design, using the pipe character (|) as the hierarchy level delimiter. For example, the following defines the b level of hierarchy that is child of hierarchy a:
    a|b
    Figure 3. Entering Full Hierarchy Name in Intel® FPGA PTC


  4. In the Module cell, enter the name of the design module. If this hierarchy already exists on another Intel® FPGA PTC data entry page, the Module cell is already populated.
  5. Specify values for the #Half, ALMs, #FF, Clock Freq, and Routing Factor cells for each hierarchy and page.

    The instance appears hierarchically in the Module Manager in the Intel® FPGA PTC, showing the dynamic power estimate for each hierarchy level, and the cumulative power for all instances and hierarchy levels.

    Figure 4.  Intel® FPGA PTC Module Manager


  6. In the Module Manager, you can right-click any instance to Rename, Duplicate, or Export the Intel® FPGA PTC data for the levels of hierarchy that you define.

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