S5PC110_UM
4 POWER MANAGEMENT
4-15
4.3.7 SLEEP MODE
In SLEEP mode, all power domains are powered down (except ALIVE and RTC), all PLLs are disabled, and the
oscillators (except RTC) are selectively disabled.
To enter the SLEEP mode,
1. Set SLEEP_CFG based on the users' requirements.
2. Set CFG_STANDBYWFI field of PWR_CFG to 2’b11.
3. Set SYSCON_INT_DISABLE field of OTHERS to 1’b1
4. Execute
Wait-For-Interrupt instruction (WFI). If SYSCON_INT_DISABLE field of OTHERS is still 1'b1 after
calling wfi instruction, this indicates wfi instruction is ignored by the processor
and user should call wfi instruction again.
Then the SYSCON performs the following sequence to enter SLEEP mode.
1. Complete all active bus transactions.
2. Complete all active memory controller transactions.
3. Allow the external DRAM enter self-refresh mode (to preserve DRAM contents).
4. Disable all PLLs.
5. Selectively disable OSCs except 32.768 KHz.
6. XPWRRGTON becomes low to power off external voltage regulator.
To exit the SLEEP mode, wake up sources referred in section <TODO> Wakeup Sources.
Then the SYSCON performs the following sequence to exit from SLEEP mode.
1. Assert wake-up reset to low.
2. XPWRRGTON becomes high to power on external voltage regulator.
3. Wait for voltage regulator to be stable (around 6ms).
4. Enable the OSC pads if disabled and wait for the OSC stabilization (around 1ms.)
5. Power up all power domains except power domains, which was power-down state before entering the SLEEP
Mode.
6. Release
wake-up
reset.
Since all modules are powered “OFF” and their states are not preserved in SLEEP mode, you must save and
restore necessary state information before and after SLEEP mode. An example procedure of state saving and
recovery is described in
Section 4.5.3 "State Save and Restore"
on
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 ...