| tdc_v2.4* | 08.03.2015 | Faster clock (400 MHz) for the delay line is used. |
|------------+----------------+----------------------------------------------------------------------------------|
| tdc_v2.3 | 08.12.2015 | Trailer word is introduced to mark some error bits. |
+| | | Temperature value is added to the data stream for status trigger (0xE). |
+| | | Some bugs are fixed for physics and status trigger mixture. |
|------------+----------------+----------------------------------------------------------------------------------|
| tdc_v2.2 | 07.10.2015 | The delay line size is decreased to 288 from 304. |
| | | The trigger window end and coarse counter reset signals are distributed via SECONDARY clock nets |