LG M6100 Service Manual - Page 25

Interconnection with external devices - driver

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3. TECHNICAL BRIEF 3.4.1 Interconnection with external devices A. RTC block interface Countered by external X-TAL The X-TAL oscillates 32.768KHz B. LCD module interface The LCD module is controlled by AD6527B(U103),DBB. In operating mode, the AD6527B(U103) controls the LCD module through _LCD_CS, LCD_DIM_CTRL, LCD_RESET, LCD_WR, LCD_CS, 2V8_MV, IF_MODE. Signals _LCD_CS LCD_DIM_CTRL LCD_RESET (GPIO 15) _WR 2V8_MV Description MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin It controls dimming mode of LCD module. This pin resets LCD module. This signal comes from DBB directly. Enable writing to LCD Driver. 2.8V voltage is supplied to LCD driver IC. Table 3-2. LCD CONTROL SIGNALS DESCRIPTION - 26 -

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3. TECHNICAL BRIEF
- 26 -
3.4.1 Interconnection with external devices
A. RTC block interface
Countered by external X-TAL
The X-TAL oscillates 32.768KHz
B. LCD module interface
The LCD module is controlled by AD6527B(U103),DBB.
In operating mode, the AD6527B(U103) controls the LCD module through _LCD_CS,
LCD_DIM_CTRL, LCD_RESET, LCD_WR, LCD_CS, 2V8_MV, IF_MODE.
Signals
Description
_LCD_CS
MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
LCD_DIM_CTRL
It controls dimming mode of LCD module.
LCD_RESET
This pin resets LCD module. This signal comes from DBB directly.
(GPIO 15)
_WR
Enable writing to LCD Driver.
2V8_MV
2.8V voltage is supplied to LCD driver IC.
Table 3-2. LCD CONTROL SIGNALS DESCRIPTION