Cortex-A15 Technical Reference Manual: 12.7.11. Power Down Control Register

12.7.11. Power Down Control Register

The ETMPDCR characteristics are:

Purpose: Controls power down of the PTM.
Usage constraints: There are no usage constraints.
Configurations: Available in all PTM configurations that have full support for trace over power down.
Attributes: See the register summary in Table 12.4.

Figure 12.11 shows the ETMPDCR bit assignments.

Figure 12.11. ETMPDCR bit assignments

Table 12.14 shows the ETMPDCR bit assignments.

Table 12.14. ETMPDCR bit assignments

Bits	Name	Function
[31:4]	-	Reserved.
[3]	Power up request	Core power up request bit. This bit enables a request to the power controller to power up the core, enabling access to the trace registers in the core power domain: 0 = DBGPWRUPREQ is LOW. This is the reset value. 1 = DBGPWRUPREQ is HIGH.
[2:0]	-	Reserved.

Bits

Name

Function

[31:4]

Reserved.

[3]

Power up request

Core power up request bit. This bit enables a request to the power controller to power up the core, enabling access to the trace registers in the core power domain:

0 = DBGPWRUPREQ is LOW. This is the reset value.

1 = DBGPWRUPREQ is HIGH.

[2:0]

Reserved.

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