DpgenConst

• Name : DpgenConst - Constant Macro-Generator
• Synopsys :

  Generate ( 'DpgenConst', modelname
           , param = { 'nbit'       : n
                     , 'const'      : constVal
                     , 'physical'   : True
                     , 'behavioral' : True                   
                     }
           )
  

• Description : Generates a n bits constant named modelname.
• Terminal Names :
  • q : the constant (output, n bit)
  • vdd : power
  • vss : ground
• Parameters : Parameters are given in the map param.
  • nbit (mandatory) : Defines the size of the generator
  • const (mandatory) : Defines the constant (string beginning with 0b, 0x or 0o functions of the basis)
  • physical (optional, default value : False) : In order to generate a layout
  • behavioral (optional, default value : False) : In order to generate a behavior
• Behavior :

  q <= constVal
  

• Example :

  from stratus import *
  
  class inst_const ( Model ) :
  
    def Interface ( self ) :
      self.o = SignalOut ( "o", 32 )
  
      self.vdd = VddIn ( "vdd" )
      self.vss = VssIn ( "vss" )
      
    def Netlist ( self ) :
      Generate ( 'DpgenConst', 'const_0x0000ffff'
               , param = { 'nbit'     : 32
                         , 'const'    : "0x0000FFFF"
                         , 'physical' : True
                         }
               )      
      self.I = Inst ( 'const_0x0000ffff', 'inst'
                    , map = { 'q'   : self.o
                            , 'vdd' : self.vdd
                            , 'vss' : self.vss
                            }
                    )
        
    def Layout ( self ) :
      Place ( self.I, NOSYM, Ref(0, 0) )