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TRCPDCR, Power Down Control Register

The TRCPDCR request to the system power controller to keep the ETM trace unit powered up.

Bit field descriptions

The TRCPDCR is a 32-bit register.

Figure D10-51 TRCPDCR bit assignments

RES0, [31:4]
PU, [3]

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

0Power not requested.
1Power requested.

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

RES0, [2:0]

Bit fields and details not provided in this description are architecturally defined. See the Arm® Embedded Trace Macrocell Architecture Specification ETMv4.

The TRCPDCR can be accessed through the external debug interface, offset 0x310.