Datasheet

HFCLKOUT
CHO1 CHO2 CHO2
037-036
Tstartup
Delay1
Delay2
XIN
Starting_Event
CLK32KOUTEN
CLK32KOUT
CLKEN
HFCLKOUTEN
HFCLKOUT
NRESPWRON
037-034
HFCLKIN
HFCLKOUT
019-028
TPS65930/TPS65920
www.ti.com SWCS037G–MAY 2008–REVISED APRIL 2011
Figure 11-13 shows the HFCLKOUT output clock waveform.
Figure 11-13. HFCLKOUT Output Clock
11.3.3 Output Clock Stabilization Time
Figure 11-14 shows the 32KCLKOUT and HFCLKOUT clock stabilization time.
NOTE: Tstartup, Delay1, and Delay2 depend on the boot mode (see Section 4.5, Power Management).
NOTE: Ensure that the high frequency oscillator start-up time is in spec for the boot mode used. During power-up the internal
delay, Delay1 above is fixed (5.2 ms and 5.3 ms depending on boot mode). The start-up time for the oscillator must
be less than the fixed delay.
Figure 11-14. 32KCLKOUT and HFCLKOUT Clock Stabilization Time
Figure 11-15 shows the HFCLKOUT behavior.
Figure 11-15. HFCLKOUT Behavior
Copyright © 2008–2011, Texas Instruments Incorporated Clock Specifications 93
Submit Documentation Feedback
focus.ti.com: TPS65930/TPS65920