DpgenNbuse

• Name : DpgenNbuse - Tristate Macro-Generator
• Synopsys :

  Generate ( 'DpgenNbuse', modelname
           , param = { 'nbit'       : n
                     , 'physical'   : true
                     , 'behavioral' : true         
                     }
           )
  

• Description : Generates a n bits tristate with an complemented output named modelname.
• Terminal Names :
  • cmd : select ( 1 bit )
  • i0 : 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
  • physical (optional, default value : False) : In order to generate a layout
  • behavioral (optional, default value : False) : In order to generate a behavior
• Behavior :

  nts:BLOCK(cmd = '1') BEGIN
      nq <= GUARDED not(i0);
  END
  

• Example :

  from stratus import *
  
  class inst_nbuse ( Model ) :
  
    def Interface ( self ) :
      self.i   = SignalIn  (   "i", 29 )
      self.cmd = SignalIn  ( "cmd", 1  )
      self.o   = SignalOut (   "o", 29 )
  
      self.vdd = VddIn ( "vdd" )
      self.vss = VssIn ( "vss" )
      
    def Netlist ( self ) :
      Generate ( 'DpgenNbuse', 'nbuse29'
               , param = { 'nbit'     : 29
                         , 'physical' : True
                         }
               )
      self.I = Inst ( 'nbuse29', 'inst'
                    , map = { 'i0'  : self.i
                            , 'cmd' : self.cmd
                            , 'nq'  : self.o
                            , 'vdd' : self.vdd
                            , 'vss' : self.vss
                            }
                    )
      
    def Layout ( self ) :
      Place ( self.I, NOSYM, Ref(0, 0) )