2.2.8. Retiming through RAMs and DSPs
The Compiler can use Hyper-Registers on paths to and from RAM or DSPs, regardless of any RAM or DSP retiming setting. However, turning on the Allow RAM Retiming or Allow DSP Retiming options allows the Compiler to retime registers over RAM and DSPs. When the RAM or DSP retiming settings are disabled (the default), the Compiler does not retime registers over RAMs or DSPs.
To access these settings, click Assignments > Settings > Compiler Settings > Advanced Settings (Fitter).
The following diagrams illustrate the impact of these settings:
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