S3C2416X RISC MICROPROCESSOR
SYSTEM
CONTROLLER
2-15
6. System controller request memory controller to enter self refresh mode. It is for preserving contents in
SDRAM.
7. System controller wait for self refresh acknowledge from memory controller.
8. After receiving the self-refresh acknowledge, system controller disables system clocks, and switches
SYSCLK’s source to MPLL reference clock.
9. Disables PLLs and Crystal(XTI) oscillation. If OSC_EN_STOP bit in PWRCFG register is ‘high’ then system
controller doesn’t disable crystal oscillation.
10. When PWRMODE[18] register is configured as ‘1’ (Deep-STOP Enabled), ARM_PWRENn signal change to
enable ARM power gating. ARM Core is reset state during STOP mode.
STOP mode Exiting sequence is as follows
1. Enable X-tal Oscillator if it is used, and wait the OSC settle down (around 1ms).
2. After the Oscillator settle-down, the System Clock is fed using the PLL input clock and also enable the PLLs
and waits the PLL locking time
3. Switching the clock source, now the PLL is the clock source.
4. When waking up from Deep-STOP mode, ARM_PWRENn is restored to release ARM power gating. After
producing SYSCLK ARM_RESETn will be released to let ARM work normally.
NOTE
DRAM has to be in self-refresh mode during STOP and SLEEP mode to retain valid memory data. LCD
must be stopped before STOP and SLEEP mode, because DRAM can't be accessed when it is in self-
refresh mode.
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 ...