44.4.2 Interrupt Sources

The ICM has one interrupt line used for standard functions and one interrupt line used to trigger any safety or security events that may occur. Both lines are connected to the Interrupt Controller.

Separate lines ease management of interrupt priorities related to safety/security checks.

The interrupt line for standard functions is driven by ICM_IMR and ICM_ISR, whereas the interrupt line for safety/security functions is driven by ICM_WPSR flags. If one of the flags in ICM_WPSR is set, the interrupt line is asserted. Handling the ICM interrupt requires programming the interrupt controller before configuring the ICM.