标签: 塞性

Verilog非阻塞性赋值NonblockingAssignmentsinVerilogSynthesis,CodingStylesThatKill!SNUG-2000SanJose,CAVotedBestPaper1stPlaceCliffordE.CummingsSunburstDesign,Inc.ABSTRACTOneofthemostmisunderstoodconstructsintheVeriloglanguageisthenonblockingassignment.EvenveryexperiencedVerilogdesignersdonotfullyunderstandhownonblockingassignmentsarescheduledinanIEEEcompliantVerilogsimulatoranddonotunderstandwhenandwhynonblockingassignmentsshouldbeused.ThispaperdetailshowVerilogblockingandnonblockingassignmentsarescheduled,givesimportantcodingguidelinestoinfercorrectsynthesizablelogicanddetailscodingstylestoavoidVerilogsimulationraceconditions.1.0IntroductionTwowellknownVerilogcodingguidelinesformodelinglogicare:……