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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 CAMERA IC, AIT701G If AIT701G is in the state of by-pass mode,
the LCD control signals from AD6724 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, LCD_RD, L_DATA[15-00], 2V8_VCAM,
IF_MODE, LCD_ID[1:3].
Signals
nLCD_MAIN_CS
L_SUB_LCD_CS
LCD_ID
LCD_RESET
LCD_WR_OUT
LCD_RD
LCD_RS_OUT
2V8_AIT_BT
IF_MODE
LGE Internal Use Only
MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
SUB LCD driver chip enable. SUB LCD driver IC has own CS pin
Select LCD module maker(2.4V : NEODIS, 0V : LGIT)
This pin resets LCD module. This signal comes from AD6720 directly.
Enable writing to LCD Driver.
Enable reading to LCD Driver.
This pin determines whether the data to LCD module are display
data or control data. LCD_RS can select 16 bit parallel bus.
2.8V voltage is supplied to LCD driver IC.
Select 16bits or 8bits interface mode for MAIN LCD. For the future
Table 3.4.1.B LCD CONTRON SIGNALS DISCRIPTION
Description
Copyright © 2008 LG Electronics. Inc. All right reserved.
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Only for training and service purposes
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