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【应用手册】AN 584: Timing Closure Methodology for Advanced FPGA Designs

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【应用手册】AN 584: Timing Closure Methodology for Advanced FPGA Designs
Today’s design application and performance requirements are more challenging due
to increased complexity. With the evolution of system-on-a-chip designs, designs have
grown larger. Additionally, external memory interfaces and mixed signal devices
bring a greater challenge to timing closure. If you use third-party IP in your designs,
you may not have control over how these IP blocks are pipelined, or how they are
partitioned. Your design must accommodate timing requirements for the IP used in
the system to achieve a fully functional design. When performance requirements for
any part of a design are not completely met, the system fails to function as desired.
This application note focuses on a generic methodology for timing closure. Whether
you use Application Specific Standard Products (ASSPs), Application Specific
Integrated Circuits (ASICs), or Field Programmable Gate Arrays (FPGAs), timing
closure poses a challenge for system design.
The Quartus® II Fitter default settings can help you meet required timing constraints
for most designs. However, for some designs that cannot meet timing requirements
with default settings, follow the methodology in this application note to achieve
timing closure requirements.
Furthermore, the guidelines and methodology presented in this document can help
improve productivity, close timing for your design faster, and reduce the number of
iterations.
AN 584: Timing Closure Methodology for
Advanced FPGA Designs

August 2009 AN-584-1.0




Introduction
Today’s design application and performance requirements are more challenging due
to increased complexity. With the evolution of system-on-a-chip designs, designs have
grown larger. Additionally, external memory interfaces and mixed signal devices
bring a greater challenge to timing closure. If you use third-party IP in your designs,
you may not have cont
【应用手册】AN 584: Timing Closure Methodology for Advanced FPGA Designs
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