Altera DDR Timing Wizard Manual do Utilizador Página 73

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Altera Corporation 3–13
November 2007 DDR Timing Wizard User Guide
Using the dtw_timing_analysis.tcl Script
Figure 3–6. Timing Closure Process
Note to Figure 3–6:
(1) Depending on your design, you may need to change the RTL even after changing the clock cycle and phase shift of
the data path.
No
Compile Design
Run dtw_timing_analysis.tcl
Is the Memory Interface
Timing Met?
Change RTL (1)
Change Phase Shift in
altpll MegaWizard
Update Clock Cycle
and/or Phase Shift
in the Legacy Controller
Megawizard
Update DTW-Only
Settings
Perform Analysis &
Synthesis
Re-Import Settings to DTW
End
Ye s
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