Only For Training And Service Purposes - LG KS660 Service Manual

3. TECHNICAL BRIEF
Input ON is a power-on input for SM-POWER with 2 active high levels (see Figure 6). It might be
triggered by a push button or by the RTCOUT output of the S-GOLD device as well. To detect if the
push-button is pressed during system operation the logical level at pin ON or its change (if Bit 1 EION in
INTCTRL2 is asserted) is recorded in bit LON of the ISF register. If the high level of voltage at pin ON
does not reach VIHdet (Vbat-0.8 ~ Vbat-0.3) the above-mentioned bit won't be set.
To support Remote power on function for factory mass production, applied an analog switch as
following figure. As monitoring the RPWRON and Key matrix KP_OUT(2) & KP_IN (0), KS660 system
recognize whether remote power on or End-key pushed
R P W R O N _ E N
LGE Internal Use Only
< Fig 8. Power on application >
R e m o e t P o w r e
V B A T
U 2 0 2
1 3
V D D V O U T
4 2
N C G N D 1
R 2 2 4
6 5
C E G N D 2
1 0 0 K
R 1 1 1 4 D 2 8 1 D T - R F -
C 2 5 1 C 2 5 2
u
2 2 . u 0 1 .
R 2 3 3
E N D _ K E Y
1 0 K
< Fig 9. Remote power on and End-key power on circuit >
O n
R 2 2 1
I S M 2 _ R P W R O N
1 K
1 0 0 K
R 2 2 3
Q 2 0 0
E M X 1
C 2 4 9 C 2 5 0
0 1 . u 2 2 . u
E N D _ K E Y _ N I
E N D _ K E Y _ N I
K E Y _ R O W 0
3
Q 2 0 1
2
K T C 4 0 7 5 E
1
K E Y _ C O L 2
- 34 - Copyright © 2008 LG Electronics. Inc. All right reserved.
2 V 1 1 _ R T C
P W R O N
1 2 3
8
6 5 4

Only for training and service purposes