allegro基本操作培训-规则设置

liyewing

$ }. h! e5 J2 ?% C' o电气规则：等长，差分对对间线长误差
物理规则：线宽，线距
/ O: r& E$ q' t( q9 C间距规则：间距相关设置


Class：A Net Class constraint object lets you group net objects that share common characteristics and require a similar constraint requirement
/ l+ c; p' r: ?0 z$ O  \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.
: U2 H* `9 h+ |- h4 CMatch 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
& v! \. |7 z- K0 p4 E0 h+ b: S* ePin pair：Pin Pairs may not be directly connected but they must exist on the  same net or Xnet
0 X0 \' d, a5 P' q( w- NDifferential pair：差分对
) |' t% k% h/ _: V+ TNet：网络
" ]2 M# c3 b3 D" I+ c5 w0 jX-net：
Region：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