Preliminary
SYSTEM CONTROLLER
S3C2451X RISC MICROPROCESSOR
2-24
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
CLOCK CONTROL REGISTER (CLKSRC, CLKDIV, HCLKCON, PCLKCON, AND SCLKCON)
The clock generator within the system controller has many dividers and MUXs to generate appropriate clocks.
These clocks are controlled by the clock control registers as described in here.
Register Address R/W
Description
Reset
Value
CLKSRC
0x4C00_0020
R/W
Clock source control register
0x0000_0000
CLKDIV0 0x4C00_0024 R/W
Clock
divider
ratio control register0
0x0000_000C
CLKDIV1 0x4C00_0028 R/W
Clock
divider ratio control register1
0x0000_0000
CLKDIV2 0x4C00_002C R/W
Clock
divider
ratio control register2
0x0000_0000
HCLKCON 0x4C00_0030 R/W
HCLK
enable
register
0xFFFF_FFFF
PCLKCON
0x4C00_0034
R/W
PCLK enable register
0xFFFF_FFFF
SCLKCON
0x4C00_0038
R/W
Special clock enable register
0xFFFF_DFFF