EXTI event mask register
| MR32 | CPU Interrupt Mask on Direct Event input x+32 |
| MR33 | CPU Interrupt Mask on Direct Event input x+32 |
| MR34 | CPU Interrupt Mask on Direct Event input x+32 |
| MR35 | CPU Interrupt Mask on Direct Event input x+32 |
| MR36 | CPU Interrupt Mask on Direct Event input x+32 |
| MR37 | CPU Interrupt Mask on Direct Event input x+32 |
| MR38 | CPU Interrupt Mask on Direct Event input x+32 |
| MR39 | CPU Interrupt Mask on Direct Event input x+32 |
| MR40 | CPU Interrupt Mask on Direct Event input x+32 |
| MR41 | CPU Interrupt Mask on Direct Event input x+32 |
| MR42 | CPU Interrupt Mask on Direct Event input x+32 |
| MR43 | CPU Interrupt Mask on Direct Event input x+32 |
| MR44 | CPU Interrupt Mask on Direct Event input x+32 |
| MR46 | CPU Interrupt Mask on Direct Event input x+32 |
| MR47 | CPU Interrupt Mask on Direct Event input x+32 |
| MR48 | CPU Interrupt Mask on Direct Event input x+32 |
| MR49 | CPU Interrupt Mask on Direct Event input x+32 |
| MR50 | CPU Interrupt Mask on Direct Event input x+32 |
| MR51 | CPU Interrupt Mask on Direct Event input x+32 |
| MR52 | CPU Interrupt Mask on Direct Event input x+32 |
| MR53 | CPU Interrupt Mask on Direct Event input x+32 |
| MR54 | CPU Interrupt Mask on Direct Event input x+32 |
| MR55 | CPU Interrupt Mask on Direct Event input x+32 |
| MR56 | CPU Interrupt Mask on Direct Event input x+32 |
| MR57 | CPU Interrupt Mask on Direct Event input x+32 |
| MR58 | CPU Interrupt Mask on Direct Event input x+32 |
| MR59 | CPU Interrupt Mask on Direct Event input x+32 |
| MR60 | CPU Interrupt Mask on Direct Event input x+32 |
| MR61 | CPU Interrupt Mask on Direct Event input x+32 |
| MR62 | CPU Interrupt Mask on Direct Event input x+32 |
| MR63 | CPU Interrupt Mask on Direct Event input x+32 |