GPIO alternate function low register
| AFSEL0 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL1 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL2 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL3 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL4 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL5 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL6 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |
| AFSEL7 | Alternate function selection for port x pin y (y = 0 to 7) These bits are written by software to configure alternate function I/Os |