C3.3 AMU counters
- All events are counted in 64-bit wrapping counters that overflow when they wrap.
There is no support for overflow status indication or interrupts.
- Any change in clock frequency, including when a WFI and WFE instruction stops the clock, can affect any counter.
- Events 0, 1, 2, 3, and 4 are fixed, and the AMEVTYPER<n> evtCount bits are read-only.