You copied the Doc URL to your clipboard.

13.8.19. 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 the register summary in Table 13.3.

Figure 13.21 shows the TRCEXTINSELR bit assignments.

Figure 13.21. TRCEXTINSELR bit assignments

Figure 13.21. TRCEXTINSELR bit assignments

Table 13.22 shows the TRCEXTINSELR bit assignments.

Table 13.22. TRCEXTINSELR bit assignments
BitsNameFunction
[31:29]-Reserved, res0.
[28:24]SEL3Selects an event from the external input bus for External Input Resource 3.
[23:21]-Reserved, res0.
[20:16]SEL2Selects an event from the external input bus for External Input Resource 2.
[15:13]-Reserved, res0.
[12:8]SEL1Selects an event from the external input bus for External Input Resource 1.
[7:5]-Reserved, res0.
[4:0]SEL0Selects an event from the external input bus for External Input Resource 0.

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

Was this page helpful? Yes No