Laptop User Manual

S3C2440A RISC MICROPROCESSOR REAL TIME CLOCK
17-5
RTC ALARM CONTROL (RTCALM) REGISTER
The RTCALM register determines the alarm enable and the alarm time. Please note that the RTCALM register
generates the alarm signal through both INT_RTC and PMWKUP in power down mode, but only through INT_RTC
in the normal operation mode.
Register Address R/W Description Reset Value
RTCALM 0x57000050(L)
0x57000053(B)
R/W
(by byte)
RTC alarm control register 0x0
RTCALM Bit Description Initial State
Reserved [7] 0
ALMEN [6] Alarm global enable.
0 = Disable, 1 = Enable
0
YEAREN [5] Year alarm enable.
0 = Disable, 1 = Enable
0
MONREN [4] Month alarm enable.
0 = Disable, 1 = Enable
0
DATEEN [3] Date alarm enable.
0 = Disable, 1 = Enable
0
HOUREN [2] Hour alarm enable.
0 = Disable, 1 = Enable
0
MINEN [1] Minute alarm enable.
0 = Disable, 1 = Enable
0
SECEN [0] Second alarm enable.
0 = Disable, 1 = Enable
0