ARM Cortex R4F Manual do Utilizador descarregar pdf (Página 55)

Power Management Modes - ARM11

• Run Mode

This mode is the normal mode of operation in which all of the

functionality of the ARM11 processor is available. If an ARM1176 or

other IEM-aware core is used, the Energy Management capabilities of the

IEM module are used in Run Mode.

• Standby Mode

This mode disables most of the clocks of the device, while keeping the

device powered up. This reduces the power drawn to the static leakage

current, plus a tiny clock power overhead required to enable the device to

wake up from Standby Mode.

• Shutdown Mode

This mode allows the entire device to power down. All processor state,

including cache and TCM state, must be saved externally.

• Dormant Mode

This mode enables the ARM11 processor core to power down while

leaving the caches and the TCM powered up and maintaining their state.

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ARM Cortex R4F Manual do Utilizador Página 55