\subsubsection{Name}

PowerRing -- Placement of power rings.

\subsubsection{Synopsys}

\begin{verbatim}
PowerRing ( nb )
\end{verbatim}

\subsubsection{Description}

This function places power rings around the core and around the plots.
    
\subsubsection{Parameters}

\begin{itemize}
    \item \verb-nb- : Number of pair of rings vdd/vss 
\end{itemize}
    
\subsubsection{Example}

\begin{verbatim}
PowerRing ( 3 )
\end{verbatim}

\subsubsection{Errors}
    
Some errors may occur :
\begin{itemize}
    \item \verb-[Stratus ERROR] PowerRing : Pads in the north haven't been placed.-\\The pads of the 4 sides of the chip must be placed before calling function PowerRing.
    \item \verb-[Stratus ERROR] PowerRing : too many rings, not enough space.-\\Wether The argument of PowerRing is to big,  or the abutment box of the chip is to small. There's no space to put the rings.
\end{itemize}

\begin{htmlonly}
         
\subsubsection{See Also}

\hyperref[ref]{\emph{Introduction}}{}{Introduction}{secintroduction}
\hyperref[ref]{\emph{Layout}}{}{Layout}{seclayout}
\hyperref[ref]{\emph{PlaceCentric}}{}{PlaceCentric}{seccentric}
\hyperref[ref]{\emph{PlaceGlu}}{}{PlaceGlu}{secglu}
\hyperref[ref]{\emph{FillCell}}{}{FillCell}{secfillcell}
\hyperref[ref]{\emph{Pads}}{}{Pads}{secpads}
\hyperref[ref]{\emph{Alimentation rails}}{}{Alimentation rails}{secrails}
\hyperref[ref]{\emph{Alimentation connectors}}{}{Alimentation connectors}{secconnectors}
\hyperref[ref]{\emph{RouteCk}}{}{RouteCk}{secrouteck}

\end{htmlonly}
