6.9.1. Enabling trace

When TraceEnable becomes active then tracing is enabled. The trace port outputs a TFO packet that includes a full 32-bit address. The full address output indicates to the trace decompressor software that there is a discontinuity in the trace. It enables the decompressor to synchronize the trace information from the first instruction after the trace is enabled.

When tracing is enabled the TFO header byte contains one of the following reason codes (see Table 6.7):

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