There are several system interrupt controllers:
- RPU: GIC-390, v2 architecture
- APU: GIC-500, v3 architecture
- PMC: MicroBlaze™
- PSM: MicroBlaze
- PL: controller instantiated for MicroBlaze or other PL-based processor
Interrupt Source Accumulators
The subsystem generates an interrupt when something occurs that software should know about. There are usually multiple reasons why an interrupt is generated. The local interrupt sources are controlled by a local interrupt accumulator. The OR'd result becomes a system interrupt.