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ction 1: Getting Started + w& ~6 H" r0 ?
]: B2 i* S8 i9 f+ u4 D This first section is meant to get a user up and running as quickly as possible. It touches + F+ n% ]( k4 j- `
on multiple topics that are detailed later, and is meant for application and a quick understanding. + Q$ S+ D; |/ o6 E6 j- O3 v3 u0 z
That being said, I think all users should look through this section and make sure they understand
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0 [" g. L3 }# M1 q3 ?$ T1 X8 y The last portion of Getting Started covers analyzing results, which is an integral part of % M( S1 V, `* S5 Q+ Z
entering constraints. One can't enter core timing or I/O constraints without being able to read the 7 u8 @) w. K( ^9 W: c
analysis reports, so it is recommended to read that section in conjunction with the information at @' o5 Y6 m- e0 }9 L
the beginning. " D# V4 k- L5 j
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Quartus Setup ( M6 V0 p% d" h H
Within Quartus, there are a number of quick steps for setting up your design with
1 M& [4 c# C( B& x' y4 F6 MTimeQuest. These are accessed through the pull-down menu Assignments -> Settings:
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" V( g; J+ G# S1 ^/ t3 ~1) Along the left panel, select Timing Analysis Settings and select the "Use TimeQuest…" radio % L: ?" I7 G" T& ^! O+ f5 z% M
button. The Classic Timing Analyzer is the old timing analysis engine, which is not - v7 X7 F4 E V) e4 x: x& W B9 s1 a
recommended for any new designs or architectures, and will eventually become obsolete.
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. A q% x6 f f( j2) Select TimeQuest Timing Analyzer in the left panel. The screenshot should look like below,
3 l$ `* j, r1 k: z7 Ewhereby the user can add a new SDC file. SDC stands for Synopsys Design Constraint, which is
4 y- D4 A/ Q) k) |* ]the format TimeQuest uses, along with many other tools. If no .sdc file exists, we will create it
8 t. S' n# |- i; Fin the next section. Note that SDC files are analyzed in the order listed, top to bottom.
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发表于 2015-1-6 10:07
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