pxa250 보드에서 pm mode에 대해서 설명부탁드립니다.
- Turbo : low latency (nanoseconds) switch between two preprogrammed
frequencies.
- Run : normal full function mode.
- Idle : core clocks are stopped - resume through an interrupt.
- Sleep : low power mode that does not save state but keeps I/Os
powered. The RTC,
Power Manager, and Clock modules are saved, except for Coprocessor 14.