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02_Quartus II时序优化策略1
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2022-08-03
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:copyright: 2009 Altera CorporationQuartus II Software Design:copyright: 2009 Altera CorporationAlte
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© 2009 Altera Corporation
1
Quartus II Software Design
Series : Optimization
Optimization Techniques –
Timing Optimization
2
© 2009 Altera Corporation
Altera, Stratix, Arria, Cyclone, MAX, HardCopy, Nios, Quartus, and MegaCore are trademarks of Altera Corporation
Timing Optimization
Timing Optimization
General Recommendations
Analyzing Timing Failures
Solving Typical Timing Failures
3
© 2009 Altera Corporation
Altera, Stratix, Arria, Cyclone, MAX, HardCopy, Nios, Quartus, and MegaCore are trademarks of Altera Corporation
General Recommendations
General Recommendations
Clocks
I/O
Asynchronous Control Signals
Many of these suggestions are found in Timing
Optimization Advisor & Quartus II Handbook
4
© 2009 Altera Corporation
Altera, Stratix, Arria, Cyclone, MAX, HardCopy, Nios, Quartus, and MegaCore are trademarks of Altera Corporation
Clocks
Clocks
Optimize for Speed
−
Apply globally
−
Apply hierarchically
−
Apply to specific clock domain
Enable netlist optimizations
Enable physical synthesis
5
© 2009 Altera Corporation
Altera, Stratix, Arria, Cyclone, MAX, HardCopy, Nios, Quartus, and MegaCore are trademarks of Altera Corporation
Global Speed Optimization
Global Speed Optimization
Select speed
−
Default is balanced
−
Area-optimized designs may also show speed improvements
May result in increased logic resource usage
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