4.15.3. WFI or WFE request

When the PTM receives a WFI or WFE request it must drain all trace from its FIFO, and output any atoms it has assembled. In these cases the PTM does not stop trace generation, but normally does not generate any more trace. See Wait for Interrupt and Wait for Event.

When the PTM has output all of the required data it signals that it is ready to enter the WFI or WFE state.

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