4.3.15. Power Control Register

The PCR characteristics are:

Purpose

Enables you to set dynamic clock gating.

Usage constraints

There are no usage constraints.

Configurations

Available in all configurations.

Attributes

See the register summary in Table 4.9.

Figure 4.17 shows the PCR bit assignments.

Figure 4.17. PCR bit assignments

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Table 4.35 shows the PCR bit assignments.

Table 4.35. PCR bit assignments

BitsNameFunction
[31:1]-Reserved.
[0]Enable dynamic clock gatingDisabled at reset.

To access the Power Control Register, read or write the CP15 register with:

MRC p15, 0, <Rd>, c15, c0, 0; Read Power Control Register
MCR p15, 0, <Rd>, c15, c0, 0; Write Power Control Register
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