LG KE820 Service Manual page 51

3. TECHNICAL BRIEF
2V72_IO
Pin6
TXD_0
Pin7
RXD_0
R451
JACK_DETECT
0
Pin6
REMOTE_INT
Pin7
REMOTE_ADC
R234 1.5K
USB_PU
R235 22
USB_DP
R238 22
USB_DM
Figure 25 Multi port switch1- USART/ REMOTE KEY/ USB
RTS_0
MULTI_PORT_3
HS_OUT_R
JACK_DETECT
VBAT
R224
10K
U209
DG2018DN
1 12
NC1 Pin7 COM4
2 11
IN1_2 NO4
3 10
NO2 IN3_4
4 9
COM2 Pin7 NC3
C456
100p
Pin6
Pin7
2V85_IO2
U106
1
R156 47
2
L102 100nH
3
C113 27p
4
C109 10u
5
R185 0
C169 C149
100p 0.1u
Figure 26 Multi port switch2- USART/ Headset stereo
MULTI_PORT_1
MULTI_PORT_0
C246
C458 C459
NA NA
0.1u
NLAS5223BMNR2G
R157
10
VCC NO2
L101
9
NO1 COM2
C103
8
COM1 IN2
C108
7
IN1 NC2
6
NC1 GND
- 52 -
VBAT
R228
10K
C
Q202
R231
B
VBUS_USB
10K
R233
E
RN1307
10K
2V72_IO
R168
10K
47
CTS_0
100nH
MULTI_PORT_2
27p
10u
HS_OUT_L