Power On Sequence - LG CF360 Service Manual

3.1.13 Power On Sequence

User presses END key and then ONSWAn signal is changed to Low.
AB3100 initiates the internal oscillator and powers on the regulators.
AB3100 generates power for DB3200.
AB3100 releases the power reset signal (PWRRSTn) and generates an interrupt(IRQ0n)
to DB3200.
Press END key
ONSWAn
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Only for training and service purposes
AB3100
PWRRST_N
IRQ
ONSWA_N
Figure 3-1-13. Power On Sequence
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3. TECHNICAL BRIEF
DB3200
Power for
DB3200
PWRRSTn
PWRRSTN
IRQ0_N
IRQ0n
LGE Internal Use Only