S5PC110_UM
4 REAL TIME CLOCK (RTC)
4-4
4.4 READ / WRITE REGISTER
To write the BCD register in RTC block, set the Bit 0 of the RTCCON register. To display the second, minute,
hour, day of the week, day, month, and year, the CPU should read the data in BCDSEC, BCDMIN, BCDHOUR,
BCDDAYWEEK, BCDDAY, BCDMON, and BCDYEAR registers, respectively, in the RTC block. However, a one-
second deviation can exist because multiple registers are read.
For example, if you read the registers from BCDYEAR to BCDMIN, the result is assumed to be 2059 (Year), 12
(Month), 31 (Day), 23 (Hour) and 59 (Minute). If you read the BCDSEC register and the value ranges from 1 to 59
(Second), there is no problem. However, if the value is 0 sec., the year, month, day, hour, and minute can change
to 2060 (Year), 1 (Month), 1 (Day), 0 (Hour) and 0 (Minute) because of the one second deviation. In this case, you
must read again from BCDYEAR to BCDSEC if BCDSEC is zero.
4.4.1 BACKUP BATTERY OPERATION
The backup battery can drive the RTC logic. The backup battery supplies the power through the RTCVDD pin into
the RTC block, even if the system power is off. If the system is off, the interfaces of the CPU and RTC logic should
be blocked, and to minimize power dissipation the backup battery only drives the oscillation circuit and the BCD
counters.
4.5 ALARM FUNCTION
The RTC generates ALARM_INT (alarm interrupt) and ALARM_WK (alarm wake-up) at a specific time in the
power-off mode or normal operation mode. In normal operation mode, ALARM_INT is activated. In the power-off
mode, ALARM_WK signal is activated as well as the ALARM_INT. The RTC alarm register (RTCALM) determines
the alarm enable/disable status and the condition of the alarm time setting.
Summary of Contents for S5PC110
Page 4: ...Section 1 OVERVIEW ...
Page 28: ...Section 2 SYSTEM ...
Page 374: ...S5PC110_UM 4 POWER MANAGEMENT 4 14 4 Let DRAMs exit from self refresh mode ...
Page 473: ...S5PC110_UM 6 BOOTING SEQUENCE 6 10 Figure 6 3 Secure Booting Diagram ...
Page 474: ...Section 3 BUS ...
Page 491: ...S5PC110_UM 2 CORESIGHT Figure 2 4 Structure of the Coresight DAP Components 2 8 ...
Page 506: ...Section 4 INTERRUPT ...
Page 537: ...Section 5 MEMORY ...
Page 540: ......
Page 703: ...Section 6 DMA ...
Page 705: ...List of Figures Figure Title Page Number Number Figure 1 1 Two DMA Tops 1 1 ...
Page 737: ...Section 7 TIMER ...
Page 795: ...Section 8 CONNECTIVITY STORAGE ...
Page 883: ...S5PC110_UM 5 USB2 0 HS OTG 5 7 5 6 3 OTG FIFO ADDRESS MAPPING Figure 5 3 OTG FIFO Mapping ...
Page 1100: ...Section 9 MULTIMEDIA ...
Page 1116: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 5 Figure 1 2 Block Diagram of the Data Flow ...
Page 1125: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 14 1 3 3 2 7 16BPP Display 1555 P1 P2 P3 P4 P5 LCD Panel ...
Page 1145: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 34 Figure 1 10 Blending Decision Diagram ...
Page 1149: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 38 Figure 1 14 Hue Control Block Diagram ...
Page 1184: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 73 ...
Page 1226: ...S5PC110_UM 1 0BDISPLAY CONTROLLER 1 115 ...
Page 1328: ...S5PC110_UM 2 1BCAMERA INTERFACE 2 81 ...
Page 1369: ...S5PC110_UM 4 3BMIPI CSIS 4 2 4 2 BLOCK DIAGRAM Figure 4 1 MIPI CSI System Block Diagram ...
Page 1381: ...S5PC110_UM 4 3BMIPI CSIS 4 14 ...
Page 1431: ...S5PC110_UM 6 5BMULTI FORMAT CODEC 6 39 ...
Page 1471: ...S5PC110_UM 6 5BMULTI FORMAT CODEC 6 79 Figure 6 7 VC1 Parameters ...
Page 1626: ...S5PC110_UM 10 9BHIGH DEFINITION MULTIMEDIA INTERFACE 10 17 Figure 10 10 Channel Status Block ...
Page 1775: ...S5PC110_UM 13 12BG2D 13 6 FIMG 2D FIMG 2D FIMG 2D Figure 13 3 Rotation and Flip Example ...
Page 1798: ...Section 10 AUDIO ETC ...
Page 1803: ...S5PC110_UM 1 AUDIO SUBSYSTEM 1 2 Figure 8 7 Keypad I F Block Diagram 8 8 ...
Page 1951: ...Section 11 SECURITY ...
Page 1954: ...List of Tables Table Title Page Number Number Table 1 1 Security Features of S5PC110 1 2 ...
Page 1964: ...S5PC110_UM 2 ADVANCED CRYPTO ENGINE Figure 2 9 DES Byte Swapping Scheme 2 9 ...
Page 2005: ...Section 12 ETC ...
Page 2039: ...Section 13 SIZE BALL MAP ...