Gioi Thieu VHDL

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  • Thit k mch s vi

  • Kin thc trc y

    H thng s:S v mMch t hpMch tun t (FF, mch m, my trng thi)CAD experience (Schematics?)Ngn ng lp trnhC ? Pascal ? BASIC ? Fortran ? Cobol ?HDL?
  • Mch S

    Transistor CircuitsTR Circuit : Full-CustomGate/FlipFlop CellCell Library : Semi-Custom (SSI)Functional ModuleAdder, Multiplier, Register, Counter (LSI)Processor-MemoryProcessor, Memory (VLSI)SystemSOC (System-On-Chip)
  • Mch S

  • Cng c thit k mch s

    Transistor CircuitLayout Editor & Circuit/Switch SimulatorGate/FlipFlopSchematic Editor & Logic SimulatorASICHardware Description Language (HDL)Verilog HDL/VHDLHDL & Schematic Mixed
  • Ti sao s dng HDL?

    Giam thi gian a san phm ra thi trngCho phep cac nha thit k phat trin nhng thit k ln oi hoi hang ngan cng logic.Cung cp mt h thng cp cao m ta cac mach logic phc tap.H tr phng phap thit k theo module va phng phap thit k a cp.Ngn ng dung thit k va m phongCho phep tao ra nhng thit k khng phu thuc vao linh kin cua mt hang nao. Rt tt cho vic thit k nhng IC chuyn dung (ASIC).Cho phep ngi s dung tuy chon cng cu, nha cung cp va linh kin.
  • HDL nh mt ngn ng lp trnh

  • HDL : l ngn ng?

    Hardware Description LanguageStatementsSequentialConcurrentSyntaxKeywordsObjectsOperators
  • HDL : Hardware Description ?

    Netlist/DataflowBehavior/Inference FF-- AND Gatea
  • So snh HDL V Ngn ng lp trnh

    Ngn ng lp trnhHardware LanguagePurposeSoftware(Executable Binaries)Hardware(Hardwired Logics)EntryText & Visual ToolsDevelopmentCompile & LinkCompile for Simulation& Synthesis for HardwireDebuggingExecutes & View Result (Text or Graphics)Simulation & ViewWaveformStatementSequential OnlyBasically ConcurrentSequential for BehaviorDescription
  • So snh HDL V Ngn ng lp trnh

  • HDL : Concurrent & Sequential Statement

    Th t statementObjects
  • S quy trong HDL

    Pht biu quyLatch (cht)
  • Li li bi nhiu ng trong HDL

  • Quy tnh thit k vi HDL

  • Design Entry

    Text EditorLanguage Sensitive Text EditorKeyword coloringStatement TemplateVisual Entry ToolsTemplate & Translate (Structural)TestbenchConverter (Waveformer)
  • HDL Design Entry (Text Editor)

  • HDL & Schematic Mixed

  • HDL Design Entry (Visual Tools)

  • HDL Simulation

  • HDL Synthesis

    Ti u logicTng hp thnh netlist
  • VHDL l g?

    VHSIC Hardware Description LanguageVHSIC : Very High Speed Integrated CircuitsBan u c xy dng cho vic lp ti liu cho cc thit k.Mt ngn ng m phng cho h thng s.Cu trc cp cao, v kiu d liu mnh.Mt ngn ng a dng.
  • VHDL : mt ngn ng a dng

    M t tun t (Sequential Description)M t song song (ng thi) (Concurrent Description)Netlist LanguageTiming SpecificationSelf-Contained Test Language(TestBenches)
  • Lch s ca VHDL

    First Generated in 1981 under VHSIC programDevelopment Started in 1983Maintained by IEEE since 1987(IEEE1076-87)MIL-STD-454 Requires VHDL for All ASICs Delivered to DoD (1988)IEEE1164: Multi Valued Logic System, 1992Revised Standard VHDL-93VITAL Initiative Defines Standard Format for Gate Libraries,1994