event generation register
| UG | Update generation |
| CC1G | Capture/compare 1 generation |
| CC2G | Capture/compare 2 generation |
| CC3G | Capture/compare 3 generation |
| CC4G | Capture/compare 4 generation |
| COMG | Capture/Compare control update generation |
| TG | Trigger generation |
| BG | Break generation |
| B2G | Break 2 generation |