TMC-20053: DSP Inputs Driven by High Fan-Out Net
Description
DSP data inputs were driven by a net with fan-out more than a user configurable threshold (default 500).
Parameters
| Name | Description | Type | Default Value | Min Value | Max Value |
|---|---|---|---|---|---|
| DSP_High_Fanout_Net_Threshold | Fanout theshold for High Fanout Net (HFN) in DSP check | integer | 500 | 1 | |
| DSP_Chain_Threshold | Chain-length threshold for unregistered DSP chain connections | integer | 2 | 1 | |
| DSP_Check_User_WYSIWYGs | Check directly instantiated DSPs | bool | True |
Recommendation
Remove high fan-out nets driving DSP data inputs. Circuits with high fan-out nets driving DSP inputs will have both routability and timing closure difficulties.
Severity
Low
Tags
| Tag | Description |
|---|---|
| dsp | Design rule checks related to DSP blocks inside the FPGA fabric. |
Device Family
- Intel®Agilex™
- Intel®Stratix® 10