11.2.3. Trace out ports

The SWO can output trace data in a number of formats but only one output mechanism is valid at any one time. Table 11.1 shows the trace out ports.

Table 11.1. Trace out ports

NameTypeDescription
TRACECLKINInputDecoupled clock from ATB to enable easy ramping up of the trace port speed. This is typically from a controllable clock source on the processor, but can be driven by an external clock generator if a high speed pin is used. Data changes on the rising edge only.
TRESETnInputReset for TRACECLKIN registers.
TRACESWOOutputTrace out port over a single pin. Manchester encoded and UART formats are supported.

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