5.7.12. ETMEN

If the ETMEN ETM output is used to control on-chip logic, such as for multiplexing the ASIC outputs with the trace port signals, this logic must be tested. To do this you must test the ASIC outputs as part of the ASIC validation. In addition, when you run the trace test program, the ASIC outputs must be multiplexed with the trace signals onto these pins using all the supported port widths. If the trace can be correctly decompressed, the ASIC logic is correct.

The example test program sets the ETMEN output HIGH at the start of the test, allowing the testing of any logic that depends on the ETMEN signal.

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