chapter  5
4 ARM Power Saving Support
Pages 1

Most ARM processors have the ability to enter low power mode, which is more commonly called the wait for interrupt mode. In this mode, the processor is sleeping at the instruction used to enter low power mode and will stay in this mode until an interrupt or a debug event occurs. When such an event occurs, the processor completes the low power instruction and prepares for the interrupt just as it would in normal processing.