\label{centralhubports}
\end{center}
\end{table}
+
+% -- connect CTS to SFP1 (TRB3 sends slow-control to CTS)
+% -- connect Slow-Control Master to SFP2 (TRB3 sends no triggers here)
+% -- use SFP3/4 as normal downlink (no GbE, hence subevent data is discarded!)
+
+\begin{table}
+\begin{center}
+\begin{tabularx}{\textwidth}{|c|c|X|}
+\hline
+\textbf{FPGA} & \textbf{Port} & \textbf{Subsystem} \\
+\hline
+\hline
+0 & 1 / 4 & CTS. Receives triggers and sends slow-control\\
+0 & 2 / 5 & Slow-control/Pexor. Uplink only.\\
+0 & 3 / 6 & MDC planes 1,2\\
+0 & 4 / 7 & MDC planes 3,4\\
+
+1 & 1 & Start/Veto/CTS \\
+1 & 2 & RICH sectors 5,6\\
+1 & 3 & RICH sectors 3,4\\
+1 & 4 & RICH sectors 1,2\\
+1 & 5 & TOF\\
+1 & 6 & Forward Wall\\
+
+2 & 1 & RPC sectors 1,2,3\\
+2 & 2 & RPC sectors 4,5,6\\
+2 & 3 & \\
+2 & 4 & \\
+2 & 5 & \\
+2 & 6 & \\
+
+3 & 1 & Shower 1 \\
+3 & 2 & Shower 2 \\
+3 & 3 & Shower 3 \\
+3 & 4 & Shower 4 \\
+3 & 5 & Shower 5 \\
+3 & 6 & Shower 6 \\
+
+4 & 1 & Pion Tracker 1\\
+4 & 2 & Pion Tracker 2\\
+4 & 3 & \\
+4 & 4 & \\
+4 & 5 & \\
+4 & 6 & \\
+
+\hline
+\end{tabularx}
+\caption{Port usage on central TrbNet hub, after replacement with a TRB3 based hub}
+\label{centralnewhubports}
+\end{center}
+\end{table}
\begin{description}
\item[Central Hub (0x8001)] The central hub connects all subsystems together. Table \ref{centralhubports} shows the physical and logical port numbers and the subsystems connected to them.
\begin{tabularx}{\textwidth}{l|l|X}
\textbf{Address(es)} & \textbf{Board(s)} & \textbf{Description} \\
0000 - 00FF & CTS & \\
-0100 - 01FF & Slow Control & \\
-0200 - 02FF & Other CTS-like boards \\
-1000 - 17FF & MDC Concentrator & 2nd digit: inner(0) / outer(1) MDC; 3rd digit: sector (0-5), 4th digit FPGA (0-4) \\
+1000 - 17FF & MDC Concentrator & 2nd digit: inner(0) / outer(1) MDC; 3rd digit: sector (0-5), 4th
+digit FPGA (0-4) \\
2000 - 2FFF & MDC OEP & 2nd digit: MDC layer (0-3); 3rd digit: sector (0-5); 4th digit MBO (0-F) \\
3000 - 31FF & RICH ADCM & 3rd digit: sector (0-5); 4th digit: segment (0-4) \\
3200 - 37FF & Shower AddOn & 3rd digit: sector (0-5); 4th digit: FPGA (0-2) \\
+3800 - 38FF & Pion & 3rd digit station, 4th digit side (x/y)\\
4000 - 400F & Start & Start detector \\
4010 - 401F & Veto & Veto detector \\
4400 - 47FF & Wall & 3 TRBs for forward wall \\
8600 - 86FF & TOF Hub & \\
8700 - 87FF & Forward Wall Hub & \\
8800 - 88FF & Start/Veto/CTS Hub & \\
+8900 - 89FF & Pion Tracker Hub & 3rd digit: station\\
F000 - FDFF & Test Setups & \\
FE00 - FEFF & Reserved & Reserved for extension of broadcast addresses \\
FF00 - FFFF & Broadcasts &
TOF & 8600 - 86FF & 1 & TOF readout via GbE \\
Wall & 8700 - 87FF & 1 & Forward Wall readout via GbE \\
Start/Veto & 8800 - 88FF & 1 & Start / Veto (and CTS in the final version) \\
+Pion & 8900 - 89FF & 2 & Pion Tracker. 3rd digit is the station \\
\end{tabularx}
\caption{Reserved SubEvent IDs Ranges. Ranges marked with a (*) are not going to be used in the standard setup.}
\label{subeventidtable}