AFR12=B_0x0, AFR8=B_0x0, AFR14=B_0x0, AFR13=B_0x0, AFR9=B_0x0, AFR11=B_0x0, AFR10=B_0x0, AFR15=B_0x0
GPIO alternate function high register
| AFR8 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR9 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR10 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR11 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR12 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR13 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR14 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 | 
| AFR15 | Alternate function selection for port x I/O pin y These bits are written by software to configure alternate function I/Os. 0 (B_0x0): AF0 1 (B_0x1): AF1 2 (B_0x2): AF2 3 (B_0x3): AF3 4 (B_0x4): AF4 5 (B_0x5): AF5 6 (B_0x6): AF6 7 (B_0x7): AF7 8 (B_0x8): AF8 9 (B_0x9): AF9 10 (B_0xA): AF10 11 (B_0xB): AF11 12 (B_0xC): AF12 13 (B_0xD): AF13 14 (B_0xE): AF14 15 (B_0xF): AF15 |