SYSTEM CONTROLLER
S3C2416X RISC MICROPROCESSOR
2-22
8 INDIVIDUAL REGISTER DESCRIPTIONS
8.1 CLOCK SOURCE CONTROL REGISTERS
(LOCKCON0, LOCKCON1, OSCSET, MPLLCON, AND EPLLCON)
The six registers control two internal PLLs and an external oscillator. The output frequency of the PLL is
determined by the divider values of MPLLCON and EPLLCON. The stabilization time for PLLs and the oscillator is
controlled by LOCKCON0/1 and OSCSET, respectively.
Register
Address
R/W
Description
Reset Value
LOCKCON0
0x4C00_0000
R/W MPLL lock time count register
0x0000_FFFF
LOCKCON1
0x4C00_0004
R/W EPLL lock time count register
0x0000_FFFF
OSCSET 0x4C00_0008
R/W
Oscillator
stabilization control register
0x0000_8000
MPLLCON 0x4C00_0010
R/W
MPLL
configuration register
0x0185_40C0
EPLLCON 0x4C00_0018
R/W
EPLL
configuration register
0x0120_0102
EPLLCON_K 0x4C00_001C R/W
EPLL
configuration register for K value
0x0000_0000
Conventional PLL requires stabilization duration after the PLL is ON. The duration can be varied according to the
device variation. Thus, software must adjust these fields with appropriate values in the LOCKCON0/1 register
whose values mean the number of the external reference clock.
LOCKCON0
Bit
Description
Initial Value
RESERVED [31:16]
RESERVED
0x0000
M_LTIME [15:0]
MPLL lock time count value for ARMCLK, HCLK, and PCLK
Typically, M_LTIME must be longer than 300 usec.
0xFFFF
LOCKCON1
Bit
Description
Initial Value
RESERVED [31:16]
RESERVED
0x0000
E_LTIME [15:0]
EPLL lock time count value for UARTCLK, SPICLK and etc.
Typically, E_LTIME must be longer than 300 usec.
0xFFFF
In general, an oscillator requires stabilization time. This register specifies the duration based on the reference
clock.
OSCSET
Bit
Description
Initial Value
RESERVED [31:0]
RESERVED
0x0000
XTALWAIT [15:0]
Crystal oscillator settle-down wait time, this value is valid
when s3c2416 is wakeup by stop mode
0x8000
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 ...