S3C2416X RISC MICROPROCESSOR
SYSTEM
CONTROLLER
2-31
8.3 POWER
MANAGEMENT
REGISTERS (PWRMODE AND PWRCFG)
If you want to change the power management mode, you just write a bit(s) into PWRMODE register. Before
writing, you must configure condition to wake-up from the power down mode.
Register
Address
R/W
Description
Reset Value
PWRMODE
0x4C00_0040
R/W
Power mode control register
0x0000_0000
PWRCFG 0x4C00_0060
R/W
Power
management configuration register
0x0000_0000
S3C2416 consists of three power-down modes, which are IDLE, (Deep)STOP, and SLEEP. The mode transition
from the NORMAL mode occurs when the appropriate value is written into PWRMODE & PWRCFG register. If
software tries to write illegal value, i.e., tries to set multiple power modes concurrently, then the write operation will
be ignored.
PWRMODE
Bit
Description
Initial Value
RESERVED [31:17]
RESERVED
0
STOP [16]
The system enters into STOP mode when this field is set to
‘1’.
0
SLEEP [15:0]
The system enters into SLEEP mode when this field is set to
‘0x2BED’. The bit pattern, ‘0x2BED’, represents “Go To BED”.
0
PWRCFG register controls the configuration of power mode transition.
PWRCFG
Bit
Description
Initial Value
RESERVED [31:18]
-
0x0000
STANDBYWFI_EN [17]
Enable entering of IDLE mode by STANDBYWFI.
0 = Disable, 1 = Enable
0
DEEP-STOP [16]
Enable the system enters DEEP-STOP mode.
If user set 16th register of PWRMODE reg. (ie. STOP) while
this bit is configured to ‘1’, the system enters DEEP-STOP
mode not STOP mode. To enter the DEEP-STOP mode
properly, this bit should be configured prior to setting STOP
mode bit.
0
SLEEP_CFG [15]
Enable wakeup source
0 = Wakeup sources are enabled depending on BATT_FLT in
sleep mode. If BATT_FLT pin is asserted logic ‘1’ system can
be exit from sleep mode by appropriate wakeup sources. If
not, system continuously remain it’s sleep state.
1 = Enable wakeup sources regardless of BATT_FLT in sleep
mode.
0
RESERVED [14:10]
-
0x00
NFRESET_CFG [9]
Reset configuration when internal resets is generated
0 = Reset NAND flash controller.
1 = Do not reset NAND flash controller.
0
Содержание S3C2416
Страница 33: ...S3C2416X RISC MICROPROCESSOR PRODUCT OVERVIEW 1 5 3 BLOCK DIAGRAM Figure 1 1 S3C2416X Block Diagram ...
Страница 38: ...PRODUCT OVERVIEW S3C2416X RISC MICROPROCESSOR 1 10 153 AIN 1 U14 195 EINT 10 GPG2 K15 237 SDATA 14 C18 ...
Страница 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Страница 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Страница 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Страница 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Страница 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Страница 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Страница 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Страница 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Страница 455: ...S3C2416X RISC MICROPROCESSOR HSMMC CONTROLLER 20 9 4 9 SD COMMAND ISSUE SEQUENCE Figure 20 9 Timeout Setting Sequence ...
Страница 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Страница 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Страница 653: ...S3C2416X RISC MICROPROCESSOR ELECTRICAL DATA 26 15 Figure 26 14 SDRAM READ WRITE Timing Trp 2 Trcd 2 Tcl 2 DW 16 bit ...
Страница 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...
Страница 672: ...MECHANICAL DATA S3C2416X RISC MICROPROCESSOR 30 2 Figure 27 2 330 FBGA 1414 Package Dimension 2 Bottom View ...