s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 237

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

S3C2410A
CLOCK GENERATOR & POWER MANAGEMENT SPECIAL REGISTER
LOCK TIME COUNT REGISTER (LOCKTIME)
PLL Control Register (MPLLCON and UPLLCON)
NOTE:
NOTE:
U_LTIME
M_LTIME
LOCKTIME
LOCKTIME
MPLLCON
UPLLCON
Register
Register
PLLCON
Mpll = (m * Fin) / (p * 2
m = (MDIV + 8), p = (PDIV + 2), s = SDIV
MDIV
PDIV
SDIV
Although there is the rule for choosing PLL value, we recommend only the values in the PLL value
recommendation table. If you have to use another value, please contact us.
When you set MPLL&UPLL values simultaneously, set UPLL value first and then MPLL value. (Needs intervals
approximately 7 NOP)
[23:12]
[19:12]
[11:0]
[9:4]
[1:0]
0x4C000000
0x4C000004
0x4C000008
Bit
Bit
Address
Address
s
)
UPLL lock time count value for UCLK.
(U_LTIME
MPLL lock time count value for FCLK, HCLK, and PCLK
(M_LTIME
R/W
R/W
R/W
R/W
R/W
150uS)
150uS)
Main divider control
Post divider control
Pre-divider control
Description
Description
PLL lock time count register
MPLL configuration register
UPLL configuration register
Description
Description
CLOCK & POWER MANAGEMENT
Reset Value
0x00FFFFFF
Reset Value
Initial State
0x0005C080
Initial State
0x00028080
0x5C / 0x28
0x08 / 0x08
0x0 / 0x0
0xFFF
0xFFF
7-19