& 42 & Spi & Contains SPI on all relevant I/Os depending on AddOn board design\\
& 43 & Uart & Uart on RJ45\_CLOCK(4) (TTL) o HDR\_IO\\
& 44 & InpMonitor & Monitoring of input signals.\\
+ & 45 & GbE & Uses GbE (not used in table 1) \\
& 51 -- 48 & TrgModule & Type of trigger module 0: none, 1: simple or, 2: edge detect \\
& 55 -- 52 & Clock & TRB3 - Main clock source: 0: onboard 200 MHz, 1: onboard 125 MHz, 2: 200 MHz RX clock on SFP1, 3: 125 MHz RX clock on SFP1, 4: external clock input 200 MHz, 5: external clock input 125 MHz\newline
TRB3sc - 52: 120 MHz instead of 100 MHz, 53: use RX clock, 54: external clock, 55: has 200 Mhz oscillator\\