doc: HSSL

doc/main.tex

@@ -105,6 +105,11 @@ The master implements the following data conversion pipeline:
    \item optional gray data coding (master only),
    \item optional parity bit (not checked).
    \end{itemize}
+\item HSSL
+   \begin{itemize}
+   \item reader only,
+   \item stand alone, no master or slave interface.
+   \end{itemize}
 \end{itemize}