Control register 1
| TMREN | TMR enable |
| OVFEN | Overflow event enable |
| OVFS | Overflow event source |
| OCMEN | One cycle mode enable |
| OWCDIR | One-way count direction |
| TWCMSEL | Two-way count mode selection |
| PRBEN | Period buffer enable |
| CLKDIV | Clock divider |
| PMEN | Plus Mode Enable |