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AR# 60913

Vivado Synthesis does not infer DSP48 for a constant multiplier by default

Description

Vivado Synthesis does not infer DSP48 blocks for a constant multiplier by default.

Is this supported?

Solution

Constant Multiplier is intentionally not mapped into DSP48 by default because DSP48 is not always the best choice for constant multiplier from a timing perspective.

If you want to force DSP48 inference for a constant multiplier, use the attribute use_dsp48 = "yes".
AR# 60913
Date Created 06/02/2014
Last Updated 04/07/2015
Status Active
Type Known Issues
Tools
  • Vivado Design Suite