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8.4. EMI compliance

If you follow the guidelines in Trace signal output timing, the trace port pins, including the TRACECLK, are inactive. This means that the trace port does not affect your EMI compliance testing. The trace port pins are active only when the trace debug tools are connected to the target.

It might be useful to carry out some testing with the trace port enabled, to determine the effect of the trace port switching on overall system noise.

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