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Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. BB Circuit Technical brief
GM310f service manual
3.15 18PIN Interface connector
[Table 3.15-1] PIN assign
Pin Function
Description
1
FM_ANT
FM radio antenna / Audio ground
2
Not
used
3
JACK_TYPE
Accessory type detect
4
L_OUT
External Speaker Left sound
5
R_OUT
External Speaker Right sound
6 USB_DP
USB
DP
7 USB_DM
USB
DM
8
EXT_SPK_DETECT External Speaker Detect (active low)
9 VBAT
Battery
voltage
10 VABT
Battery
voltage
11
RPWRON_EN
Remote power on (active high. 2.8V)
12 VCHG
Charger
voltage
13 VCHG
Charger
voltage
14 DSR
DSR
15 USB_VCHG USB
VBUS
16
UART_TX
UART TX data
17 UART_RX
UART
RX
data
18 GND
Power
GND