Intel® Stratix® 10 Variable Precision DSP Blocks User Guide

ID 683832
Date 8/13/2021
Document Table of Contents
Give Feedback Pre-adder Constant Mode

In this mode, one multiplier operand derives from the input port, and the other operand derives from the internal coefficient storage. The coefficient storage allows up to 8 preset constants. The coefficient selection signals are coefsel[0..3].

This mode is expressed in the following equation.

The following figure shows the pre-adder constant mode of a multiplier.

Figure 37. Pre-adder Constant Mode