SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
The INTC has 20 internal channels to which enabled interrupts can be mapped. Channel 0 has highest priority and channel 19 has the lowest priority. Channels are used to group the interrupts into a smaller number of priorities that can be given to a host interface with a very small number of interrupt inputs.
When multiple interrupts are mapped to the same channel their interrupts are ORed together so that when either is active the output is active. The channel map registers (ICSS_INTC_CH_MAP_REGi, where i=0 to 39) define the channel for each interrupt. There is one register per 4 interrupts; therefore, there are 40 channel map registers for a of 160 interrupts. The channel for each interrupt can be set using these registers.