PWR port I pull-down control register
| PD0 | Port I pull-down bit |
| PD1 | Port I pull-down bit |
| PD2 | Port I pull-down bit |
| PD3 | Port I pull-down bit |
| PD4 | Port I pull-down bit |
| PD5 | Port I pull-down bit |
| PD6 | Port I pull-down bit |
| PD7 | Port I pull-down bit |