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3. TECHNICAL BRIEF
3.5.1 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 AD6726 are by-passed through AIT701G.
In operating mode, the AIT701G controls the LCD module through nLCD_MAIN_CS, nLCD_RESET,
LCD_RS, LCD_WR, LCD_RD, L_DATA[15-00], 2V8_AIT_CAM, IF_MODE, LCD_ID.
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Signals Description
nLCD_MAIN_CS MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
nLCD_RESET This pin resets LCD module. This signal comes from AD6726 directly.
LCD_ID Select LCD module maker(2.4V : NEODIS, 0V : LGIT)
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.
LCD_WR Enable writing to LCD Driver.
LCD_RD Enable reading to LCD Driver.
IF_MODE Select 16bits or 8bits interface mode for MAIN LCD. For the future
2V8_AIT_CAM 2.8V voltage is supplied to LCD driver IC.
Table 3.5.B LCD CONTRON SIGNALS DISCRIPTION
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