73 lines
2.5 KiB
TeX
73 lines
2.5 KiB
TeX
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\begin{itemize}
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\item \textbf{Name} : DpgenNand3 -- Nand3 Macro-Generator
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\item \textbf{Synopsys} :
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\begin{verbatim}
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Generate ( 'DpgenNand3', modelname
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, param = { 'nbit' : n
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, 'drive' : d
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, 'physical' : True
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, 'behavioral' : True
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}
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)
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\end{verbatim}
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\item \textbf{Description} : Generates a \verb-n- bits three inputs NAND with an output power of \verb-d- named \verb-modelname-.
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\item \textbf{Terminal Names} :
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\begin{itemize}
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\item \textbf{i0} : input (\verb-n- bits)
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\item \textbf{i1} : input (\verb-n- bits)
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\item \textbf{i2} : input (\verb-n- bits)
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\item \textbf{nq} : output (\verb-n- bits)
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\item \textbf{vdd} : power
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\item \textbf{vss} : ground
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\end{itemize}
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\item \textbf{Parameters} : Parameters are given in the map \verb-param-.
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\begin{itemize}
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\item \textbf{nbit} (mandatory) : Defines the size of the generator
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\item \textbf{drive} (optional) : Defines the output power of the gates
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\begin{itemize}
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\item Valid drive are : 1 or 4
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\item If this parameter is not defined, it's value is the smallest one permitted
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\end{itemize}
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\item \textbf{physical} (optional, default value : False) : In order to generate a layout
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\item \textbf{behavioral} (optional, default value : False) : In order to generate a behavior
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\end{itemize}
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\item \textbf{Behavior} :
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\begin{verbatim}
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nq <= not ( i0 and i1 and i2 )
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\end{verbatim}
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\item \textbf{Example} :
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\begin{verbatim}
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from stratus import *
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class inst_nand3 ( Model ) :
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def Interface ( self ) :
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self.in1 = SignalIn ( "in1", 20 )
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self.in2 = SignalIn ( "in2", 20 )
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self.in3 = SignalIn ( "in3", 20 )
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self.o = SignalOut ( "o", 20 )
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self.vdd = VddIn ( "vdd" )
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self.vss = VssIn ( "vss" )
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def Netlist ( self ) :
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Generate ( 'DpgenNand3', 'nand3_20'
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, param = { 'nbit' : 20
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, 'physical' : True
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}
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)
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self.I = Inst ( 'nand3_20', 'inst'
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, map = { 'i0' : self.in1
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, 'i1' : self.in2
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, 'i2' : self.in3
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, 'nq' : self.o
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, 'vdd' : self.vdd
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, 'vss' : self.vss
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}
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)
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def Layout ( self ) :
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Place ( self.I, NOSYM, Ref(0, 0) )
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\end{verbatim}
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\end{itemize}
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