Only For Training And Service Purposes - LG AT&T GR500 Service Manual

3. TECHNICAL BRIEF
3.1.12 Power On Sequence
User presses END key and then ONSWA_n signal is changed to Low.
AB3100 initiates the internal oscillator and powers on the regulators.
AB3100 generates a power for DB3200.
AB3100 releases the power reset signal(PWRRST_n) and generates an interrupt(IRQ0_n)
to DB3200.
Press END key
ONSWA_n
LGE Internal Use Only
AB3100
PWRRST
IRQ
ONSWA
Figure 3-1-12. Power On Sequence
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DB3200
Power for DB3200
PWRRST_n
RESPOW_N
IRQ0_N
IRQ0_n
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Only for training and service purposes