esTc 设计中 Concurrent Statements There are several different kinds of Concurrent statements (1) Simple Signal Assignments (2) Conditional Signal Assignments (3) Selected Signal Assignments
设计中心 Concurrent Statements • There are several different kinds of Concurrent Statements – (1) Simple Signal Assignments – (2) Conditional Signal Assignments – (3) Selected Signal Assignments
esTc 设计中 Putting it all together ENTITY cmpl sig Is ENTITY PORT( a, b, sel IN bit X, y, Z: OUT ARCHITECTURE END cmpl_sig ARCHITECTURE logic OF cmpl_ sig IS BEGIN X simple signal assignment x c(a AND NoT sel) OR(b AND se); sel conditional signal assignment y c a WHEN sel=O' ELSE b; selected signal assignment WITH sel SElECT i sel z<= a WHEN'O’ b When 0 WHEN OTHERS END logic. abe ∶sel CONFIGURATION cmpl_sig_ conf OF cmpl_sig IS FOR logic END FOR: END cmpl_sig_ conf;
设计中心 Putting it all together
esTc 设计中 Process statement all the Process statement is executed in parallel Within the Process Statement, the coding s execute in sequential Process Statement is: OUTPUT depends on INPUT with Sensitivity List to control the event happen
设计中心 Process Statement • All the Process Statement is executed in parallel • Within the Process Statement, the coding is execute in sequential • Process Statement is : OUTPUT depends on INPUT with Sensitivity List to control the event happen
esTc 设计中 VHDL的一般格式及其语法规则 More Detail
设计中心 VHDL的一般格式及其语法规则 More Detail
esTc 设计中 延的语句 · WaIT clause · Attribute VHDL的顺序语句 Subprograms(function and procedure) · Block
设计中心 • 延时语句 • WAIT clause • Attribute • VHDL的顺序语句 • Subprograms (function and procedure) • Block