\item[6XXX] use with Nxyter
\item[7XXX] use with 32PinAddOn
\item[8XXX] uses RX clock as main internal clock
- \item[X0nX] contains $2^n$ TDC channels, single edge
- \item[X1nX] contains $2^n$ TDC channels, double edge
+ \item[X0nX] contains $2^n$ TDC channels, single edge, n<8
+ \item[X1nX] contains $2^n$ TDC channels, double edge, n<8
\item[X2XX] contains a network hub
\item[X4XX] SPI interface on AddOn connector
\item[X8XX] Double edge TDC realized with two single edge channels
+ \item[XX8X] Non-TDC (because of bad choice of encoding)
+ \item[XX9X] for MVD converter board 2013
\end{description*}
\end{description*}