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 发表于 2011-12-12 20:28:33
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| timing_clock_gating_propagate_enable :Allows  the  gating-enable signal delay to propagate through the  gating cell. timing_separate_clock_gating_group:Specifies  if  a  separate  cost  group is used for clock-gating  checks in timing analysis, reports, and optimization.
 timing_use_enhanced_capacitance_modeling:Specifies the use of the following attributes found on a library  pin:   rise_capacitance_range(low,   high);   fall_capaci      tance_range(low,  high), rise_capacitance, and fall_capacitance.
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