EXTI falling trigger selection register
| TR0 | Rising trigger event configuration bit of Configurable Event input |
| TR1 | Rising trigger event configuration bit of Configurable Event input |
| TR2 | Rising trigger event configuration bit of Configurable Event input |
| TR3 | Rising trigger event configuration bit of Configurable Event input |
| TR4 | Rising trigger event configuration bit of Configurable Event input |
| TR5 | Rising trigger event configuration bit of Configurable Event input |
| TR6 | Rising trigger event configuration bit of Configurable Event input |
| TR7 | Rising trigger event configuration bit of Configurable Event input |
| TR8 | Rising trigger event configuration bit of Configurable Event input |
| TR9 | Rising trigger event configuration bit of Configurable Event input |
| TR10 | Rising trigger event configuration bit of Configurable Event input |
| TR11 | Rising trigger event configuration bit of Configurable Event input |
| TR12 | Rising trigger event configuration bit of Configurable Event input |
| TR13 | Rising trigger event configuration bit of Configurable Event input |
| TR14 | Rising trigger event configuration bit of Configurable Event input |
| TR15 | Rising trigger event configuration bit of Configurable Event input |
| TR16 | Rising trigger event configuration bit of Configurable Event input |
| TR17 | Rising trigger event configuration bit of Configurable Event input |
| TR18 | Rising trigger event configuration bit of Configurable Event input |
| TR19 | Rising trigger event configuration bit of Configurable Event input |
| TR20 | Rising trigger event configuration bit of Configurable Event input |
| TR21 | Rising trigger event configuration bit of Configurable Event input |