Intel® Quartus® Prime Standard Edition User Guide: Design Recommendations

ID 683323
Date 9/24/2018
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1.2.1. Optimizing Combinational Logic

Combinational logic structures consist of logic functions that depend only on the current state of the inputs. In Intel FPGAs, these functions are implemented in the look-up tables (LUTs) with either logic elements (LEs) or adaptive logic modules (ALMs).

For cases where combinational logic feeds registers, the register control signals can implement part of the logic function to save LUT resources. By following the recommendations in this section, you can improve the reliability of your combinational design.