Samsung S5PC100 User Manual page 217

Power Management
Power Saving
Mode
1. CFG_STANDBYWFI in PWR_CFG = 2'b11
SLEEP
2. PMU_INT_DISABLE in OTHERS = 1'b1
3. ARM Command (WFI)
(2)
E-SLEEP 1. BATF_WAKEUP_MASK in PWR_CFG = 1'b0
(Emergency 2. CFG_BATFLT = 2'b11
SLEEP)
3. Battery fault (XnBATF = 0)
1. nBATF: Low Battery Interrupt from XnBATF pad.
2. Basically, E-SLEEP mode is the same as SLEEP mode, but we distinguish E-SLEEP mode from SLEEP
mode in that entering condition and wakeup sources are different.
The Wake-up Event Source for E-SLEEP mode can be optionally limited to be just none, or it can be any of
those listed in the above table. See PWR_CFG register's CFG_BATF_WKUP field for more details.
Power mode exit condition is met if one of various wakeup sources occurs. For detailed descriptions of wakeup
sources refer to Section 5. WAKEUP SOURCES.
2.4-18
Enter
S5PC100 USER'S MANUAL (REV1.0)
Exit
(1)
1. nBATF
2. External Interrupt
3. RTC Alarm
4. RTC TICK
5. Key Pad Press event
1. External Interrupt
2. RTC Alarm
3. RTC TICK
4. Key Pad Press event