Only For Training And Service Purposes - LG GT500 Service Manual

3. TECHNICAL DESCRIPTION
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
LGE Internal Use Only
AB3100
PWRRST_N
IRQ
ONSWA_N
Figure 3-1-13. Power On Sequence
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DB3200
Power for
DB3200
PWRRSTn
PWRRSTN
IRQ0_N
IRQ0n
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Only for training and service purposes