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Power Down Control Register

The TRCPDCR characteristics are:

Purpose

Request to the system power controller to keep the ETM trace unit powered up.

Usage constraints

There are no usage constraints.

Configurations

Available in all configurations.

Attributes

See the register summary in Table 13.3.

Figure 13.44 shows the TRCPDCR bit assignments.

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Table 13.45 shows the TRCPDCR bit assignments.

Table 13.45. TRCPDCR bit assignments
Bits Name Function
[31:4] - Reserved, res0.
[3] PU

Powerup request, to request that power to the ETM trace unit and access to the trace registers is maintained:

0

Power not requested.

1

Power requested.

This bit is reset to 0 on a trace unit reset.

[2:0] - Reserved, res0.

The TRCPDCR can be accessed through the internal memory-mapped interface and the external debug interface, offset 0x310.

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