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Table Of Contents
S3C2450X RISC MICROPROCESSOR SYSTEM CONTROLLER
2-21
7 REGISTER DESCRIPTIONS
The system controller registers are divided into seven categories; clock source control, clock control, power
management, reset control, system controller status, bus configuration, and misc. The following section will
describe the behavior of the system controller.
7.1 ADDRESS MAP
Table 2
-9 summarizes the address map of the system controller.
Table 2-9. System Controller Address Map
Register Address R/W Description Alive Reset Value
LOCKCON0 0x4C00_0000 R/W MPLL lock time count register X 0x0000_FFFF
LOCKCON1 0x4C00_0004 R/W EPLL lock time count register X 0x0000_FFFF
OSCSET 0x4C00_0008 R/W Oscillator stabilization control register O 0x0000_8000
MPLLCON 0x4C00_0010 R/W MPLL configuration register X 0x0185_40C0
EPLLCON 0x4C00_0018 R/W EPLL configuration register X 0x0120_0102
EPLLCON_K 0x4C00_001C R/W EPLL configuration register for K value X 0x0000_0000
CLKSRC 0x4C00_0020 R/W Clock source control register X 0x0000_0000
CLKDIV0 0x4C00_0024 R/W Clock divider ratio control register0 X 0x0000_000C
CLKDIV1 0x4C00_0028 R/W Clock divider ratio control register1 X 0x0000_0000
CLKDIV2 0x4C00_002C R/W Clock divider ratio control register2 X 0x0000_0000
HCLKCON 0x4C00_0030 R/W HCLK enable register X 0xFFFF_FFFF
PCLKCON 0x4C00_0034 R/W PCLK enable register X 0xFFFF_FFFF
SCLKCON 0x4C00_0038 R/W Special clock enable register X 0xFFFF_DFFF
PWRMODE 0x4C00_0040 R/W Power mode control register X 0x0000_0000
SWRST 0x4C00_0044 R/W Software reset control register X 0x0000_0000
BUSPRI0 0x4C00_0050 R/W Bus priority control register 0 X 0x0000_0000
PWRCFG 0x4C00_0060 R/W
Power management configuration
register
O 0x0000_0000
RSTCON 0x4C00_0064 R/W Reset control register O 0x0006_0101
RSTSTAT 0x4C00_0068 R Reset status register O 0x0000_0001
WKUPSTAT 0x4C00_006C R/W Wake-up status register O 0x0000_0000
INFORM0 0x4C00_0070 R/W SLEEP mode information register 0 O 0x0000_0000
INFORM1 0x4C00_0074 R/W SLEEP mode information register 1 O 0x0000_0000
INFORM2 0x4C00_0078 R/W SLEEP mode information register 2 O 0x0000_0000
INFORM3 0x4C00_007C R/W SLEEP mode information register 3 O 0x0000_0000
USB_PHYCTRL 0x4C00_0080 R/W USB PHY control register X 0x0000_0000
USB_PHYPWR 0x4C00_0084 R/W USB PHY power control register X 0x0000_0000
USB_RSTCON 0x4C00_0088 R/W USB PHY reset control register X 0x0000_0000
USB_CLKCON 0x4C00_008C R/W USB PHY clock control register X 0x0000_0000