State machine IRQ flags register. Write 1 to clear. There are eight state machine IRQ flags, which can be set, cleared, and waited on by the state machines. There’s no fixed association between flags and state machines – any state machine can use any flag.
Any of the eight flags can be used for timing synchronisation between state machines, using IRQ and WAIT instructions. Any combination of the eight flags can also routed out to either of the two system-level interrupt requests, alongside FIFO status interrupts – see e.g. IRQ0_INTE.
| IRQ |