LG U8138 Service Manual page 43

3. TECHNICAL BRIEF
Pin No. Pin Name
1 GND
2 F_ON
3 MOTOR-
4 EAR+
5 EAR-
6 INDICATOR
7 –
8 VBAT
9 PWM_CTRL
10 D1
11 D3
12 D5
13 D7
14 WR
15 MAIN_CS
16 RESET
17 VDD
18 VDD
19 GND
20 GND
21 GND
22 GND
23 GND
24 GND
25 VSYNC
26 SUB_CS
27 RS
28 RD
29 D6
I/O
– Ground
I Camera Flash LED. (Turn on at high level)
I Vibrator Pair Signal (-)
I EarpeicePair Signal (+)
I EarpeicePair Signal (-)
I Blue LED Indicator Signal. (Turn on at high level )
– NC
I Power Supply.( for LED B/L)
I Control the brightness of B/L
I/O Bi-Direction Data Bus
I/O Bi-Direction Data Bus
I/O Bi-Direction Data Bus
I/O Bi-Direction Data Bus
I Write-Strobe Signal. Active low
I Main Chip Select. Active low
I Reset Pin. Initialize the LSI at the low level
I Power Supply for LDI and LCM.
I Power Supply for LDI and LCM.
– Ground
– Ground
– Ground
– Ground
– Ground
– Ground
I Frame synchronizing signal. Active low
I Sub Chip Select. Active low
I Select the Register. High : control, Low : Index/Status.
I Read-Strobe Signal, Active low
I/O Bi-Direction Data Bus
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Description