Display And Interface - LG MG230 Service Manual

3. TECHNICAL BRIEF
PRE_CHARGE_R
4.2V~3.92V
Figure 3-6 Circuit For Battery Charging and Battery Block Indication

3.3.4 Display and Interface

LCD Controlled by L_MAIN_LCD_CS, L_SUB_LCD_CS, LCD_RESET, LCD_RS, LCD_WR, L_RD,
LCD_ID, L_DATA[00:15] ports, VSYNC_OUT.
• L_MAIN_LCD_CS : MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
• L_SUB_LCD_CS : SUB LCD driver chip enable. SUB LCD driver IC has own CS pin
• LCD_RST : This pin resets LCD module. This signal comes from AD6720 directly.
• LLCD_RS: This pin determines whether the data to LCD module are display data or control data.
• L_WR : Write control Signal
• L_RD : Read control Signal. But this pin used only for debugging.
• L_DATA[00:15] : Parallel data lines.
• LCD_ID: LCD type selection signals
• VSYNC_OUT : Vsync Interface
• For using 65K color, data buses should be 16 bits.
LGE Internal Use Only
PRE-CHARGE
VCHARGE
R108
C129
10
0.1u
R109
1K
Q101
R110
R112
1.5K
UMX1NTN
EQBA0000406
3.91V~3.78V 3.77V~3.70V
- 20 -
VBAT
VBAT
C130
LD100
27p
EDLH0007901
SSC-FR104-II1
3
Q100
2
2SC5585
7.5K
EQBN0007101
R113
1
10K
R114
270
3.69V~3.62V
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes