GPIO port input data register
| IDR0 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR1 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR2 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR3 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR4 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR5 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR6 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR7 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR8 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR9 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR10 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR11 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR12 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR13 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR14 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. | 
| IDR15 | Port x input data I/O pin y These bits are read-only. They contain the input value of the corresponding I/O port. |