Samsung S5PC100 User Manual page 244

S5PC100 USER'S MANUAL (REV1.0)
Oscillation setting time from sleep mode return is shown in Figure 2.4-16. Main clock can be supplied by XXTI
input (XOM[0]=0) or XusbXTI input (XOM[0]=1), and oscillator (EXTCLK) or crystal (OSC) can be used for main
clock.
Note that when crystal is used for main clock, oscillator stabilization time for XXTI or XusbXTI pad should be
considered by using PWR_STABLE register in case that oscillation pad is disabled in SLEEP mode.
EXTCLK
OSC
Clock
Disable
VCO
Output
HCLK
Sleep mode is initiated.
Figure 2.4-16 Sleep Mode Return Oscillation Setting Timing
Several slow clock cycles (OSC or EXTCLK)
Power Management
Wake up from sleep mode
tOSC2
2.4-45