PPG Start Trigger Control Register 1
| STR1 | 8-bit UP counter operation enable bit for comparison |
| MONI1 | 8-bit UP counter operation state monitor bit for comparison |
| CS1 | 8-bit UP counter clock select bits for comparison |
| TRG1O | PPG1 trigger stop bit |
| TRG3O | PPG3 trigger stop bit |
| TRG5O | PPG5 trigger stop bit |
| TRG7O | PPG7 trigger stop bit |