Dpgennand4

• Name : DpgenNand4 - Nand4 Macro-Generator
• Synopsys :

  Generate ( 'DpgenNand4', modelname
           , param = { 'nbit'       : n
                     , 'drive'      : d
                     , 'physical'   : True
                     , 'behavioral' : True                   
                     }
           )
  

• Description : Generates a n bits four inputs NAND with an output power of d named modelname.
• Terminal Names :
  • i0 : input (n bits)
  • i1 : input (n bits)
  • i2 : input (n bits)
  • i3 : input (n bits)
  • nq : output (n bits)
  • vdd : power
  • vss : ground
• Parameters : Parameters are given in the map param.
  • nbit (mandatory) : Defines the size of the generator
  • drive (optional) : Defines the output power of the gates
    • Valid drive are : 1 or 4
    • If this parameter is not defined, it's value is the smallest one permitted
  • physical (optional, default value : False) : In order to generate a layout
  • behavioral (optional, default value : False) : In order to generate a behavior
• Behavior :

  nq <= not ( i0 and i1 and i2 and i3 )
  

• Example :

  from stratus import *
  
  class inst_nand4 ( Model ) :
  
    def Interface ( self ) :
      self.in1 = SignalIn  ( "in1", 9 )
      self.in2 = SignalIn  ( "in2", 9 )
      self.in3 = SignalIn  ( "in3", 9 )
      self.in4 = SignalIn  ( "in4", 9 )
      self.o   = SignalOut (   "o", 9 )
  
      self.vdd = VddIn ( "vdd" )
      self.vss = VssIn ( "vss" )
      
    def Netlist ( self ) :
      Generate ( 'DpgenNand4', 'nand4_9'
               , param = { 'nbit'     : 9
                         , 'physical' : True
                         }
               )
      self.I = Inst ( 'nand4_9', 'inst'
                    , map = { 'i0'  : self.in1
                            , 'i1'  : self.in2
                            , 'i2'  : self.in3
                            , 'i3'  : self.in4
                            , 'nq'  : self.o
                            , 'vdd' : self.vdd
                            , 'vss' : self.vss
                            }
                    )
      
    def Layout ( self ) :
      Place ( self.I, NOSYM, Ref(0, 0) )