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3. TECHNICAL BRIEF
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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 Camera backend IC AIT701G
If AIT701G is in the state of by-pass mode, the LCD control signals from AD6721
are by-passed through AIT701G.
In operating mode, the AIT701G controls the LCD module through L_MAIN_LCD_CS,
L_SUB_LCD_CS, LCD_RESET, LCD_RS, LCD_WR, L_DATA[15-00],
2V8_MV, LCD_IF, LCD_ID.
Signals
Description
L_MAIN_LCD_CS
MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
pinL_SUB_LCD_CS
SUB LCD driver chip enable. SUB LCD driver IC has own CS pin
LCD_ID
Select LCD module maker
LCD_RESET
This pin resets LCD module. This signal comes from AD6721 directly.
LCD_WR
Enable writing to LCD Driver.
LCD_RD
Enable reading to LCD Driver.
LCD_RS
This pin determines whether the data to LCD module are display
data or control data. LCD_RS can select 16 bit parallel bus.
2V8_CAM
2.8V voltage is supplied to LCD driver IC.
IF_MODE
Select 16bits or 8bits interface mode for MAIN LCD.
For the future
Table 3.4.B LCD CONTRON SIGNALS DISCRIPTION
Содержание KP210
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