Register addresses from 0xA000 to 0xA0ef is SCM FPGA (1) \\
Register addresses from 0xA0f0 to 0xA0ff is ECP2M FPGA (2) \\
+
Register addresses from 0xA100 to 0xA100 + 26*500 (500 is number of samples per beam structure), the histograms are created in the SCM FPGA (1) see fig. \ref{ctsbeam}. First 8 is START next 8 is also START but perpendicular stripes. Next 8 is Veto and for the last two the source is selected by 0xA0C2 register.
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29 & invert timing trigger \\
28 & Single Event Upset Detection enable \\
27 & Enable error correction in media interface \\
-26 -- 24 & reserved \\
+26 & Enable automatic reboot at network reset \\
+25 -- 24 & reserved \\
23 -- 20 & data format \\
19 -- 16 & reserved \\
15 -- 0 & enable frontends \\