Intel® Quartus® Prime Standard Edition User Guide: Third-party Synthesis

ID 683796
Date 9/24/2018
Public
Document Table of Contents
Give Feedback

2.9.6.1.1. Controlling DSP Block Inference for Multipliers

By default, the Precision Synthesis software uses DSP blocks available in Stratix series devices to implement multipliers. The default setting is AUTO, which allows the Precision Synthesis software to map to logic look-up tables (LUTs) or DSP blocks, depending on the size of the multiplier. You can use the Precision Synthesis GUI or HDL attributes for direct mapping to only logic elements or to only DSP blocks.
Table 6.  Options for dedicated_mult Parameter to Control Multiplier Implementation in Precision Synthesis  

Value

Description

ON

Use only DSP blocks to implement multipliers, regardless of the size of the multiplier.

OFF

Use only logic (LUTs) to implement multipliers, regardless of the size of the multiplier.

AUTO

Use logic (LUTs) or DSP blocks to implement multipliers, depending on the size of the multipliers.