SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The next stage of the INTC is prioritization. Since multiple interrupts can feed into a single channel and multiple channels can feed into a single host interrupt, it is necessary to read the status of all interrupts to determine the highest priority interrupt that is pending. The INTC provides hardware to perform this prioritization with a given scheme so that software does not have to do this. There are two levels of prioritizations:
This is the final prioritized interrupt for the host interrupt and is stored in the global prioritized innterrupt register (ICSS_INTC_GLB_PRI_INTR_REG). The highest priority pending interrupt with respect to each host interrupts can be obtained using the host interrupt prioritized interrupt registers (ICSS_INTC_PRI_HINT_REGj where j = 0 to 19).