C10.20 External Input Select Register

The TRCEXTINSELR characteristics are:

Purpose
Controls the selectors that choose an external input as a resource in the ETM trace unit. You can use the Resource Selectors to access these external input resources.
Usage constraints
Accepts writes only when the trace unit is disabled.
Configurations
Available in all configurations.
Attributes
See C10.1 ETM register summary.
Figure C10-19 TRCEXTINSELR bit assignments
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[31:29]
Reserved, res0.
SEL3, [28:24]
Selects an event from the external input bus for External Input Resource 3.
[23:21]
Reserved, res0.
SEL2, [20:16]
Selects an event from the external input bus for External Input Resource 2.
[15:13]
Reserved, res0.
SEL1, [12:8]
Selects an event from the external input bus for External Input Resource 1.
[7:5]
Reserved, res0.
SEL0, [4:0]
Selects an event from the external input bus for External Input Resource 0.

The TRCEXTINSELR can be accessed through the external debug interface, offset 0x120.

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