RM-583
Baseband Description and Troubleshooting
z
Keypad power-on button is pressed and KPDPWR_N pin is pulled low.
z
External power source is detected (VCHG pin within valid threshold).
z
Real time clock alarm is triggered.
z
SMPL condition was detected and an SMPL recovery is initiated.
Power off
While PS_HOLD signal is high, QSC11xx device is in one of its ON states. Circuits continually monitor
these 3 events that could cause a power-off sequence:
z
PS_HOLD signal goes low responding to keypad power button being pressed.
z
VDD voltage drops below UVLO threshold.
z
QSC11xx core die temperature exceeds its “severe” over-temperature threshold.
Power Distribution
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