allegro基本操作培训-规则设置

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, i$ ]4 b$ k! F7 `电气规则：等长，差分对对间线长误差
物理规则：线宽，线距
( N# H) g6 e0 s- U$ e$ U2 I间距规则：间距相关设置
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Class：A Net Class constraint object lets you group net objects that share common characteristics and require a similar constraint requirement
Net group：A Net Group is a collection of various net (signal) objects. Different type of net objects, such as nets, buses, differential pairs, and XNets, can be the members of a Net Group.
Match group：A Match Group is a collection of nets, Xnets, or pin pairs which must all match (in delay or length) or be relative to a specific target within the group
7 @, s6 ]* i% N! T' m7 c9 ZPin pair：Pin Pairs may not be directly connected but they must exist on the  same net or Xnet
+ Q/ Q9 W$ N  U0 m0 J  y* \. PDifferential pair：差分对
# |+ v5 W: `; [0 K7 R5 dNet：网络
X-net：
% V" T# q' h2 o5 gRegion：区域
Region class：A Region Class constraint object lets you constrain the members of a Net Class—within a Region—differently than the original constraints on that Region

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规则设置时包括电气规则，物理规则和间距规则