s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 231

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

S3C2410A
If the user switches from SLOW mode to Normal mode by disabling SLOW_BIT and MPLL_OFF bit simultaneously
in the CLKSLOW register, the frequency is changed just after the PLL lock time. Figure 7-11 shows the timing
diagram.
Figure 7-11. Issuing Exit_from_Slow_mode Command and the Instant PLL_on Command Simultaneously
Mpll
SLOW_BIT
MPLL_OFF
FCLK
Divided
OSC clock
Slow mode enable
PLL off
It changes to PLL clock
after lock time automatically
Hardware lock time
PLL on
Slow mode disable
CLOCK & POWER MANAGEMENT
7-13