Only For Training And Service Purposes - LG KP175 Service Manual

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.
Signals
nLCD_MAIN_CS
nLCD_RESET
LCD_ID
LCD_RS
LCD_WR
LCD_RD
IF_MODE
2V8_AIT_CAM
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

MAIN LCD driver chip enable. MAIN LCD driver IC has own CS pin
This pin resets LCD module. This signal comes from AD6726 directly.
Select LCD module maker(2.4V : NEODIS, 0V : LGIT)
This pin determines whether the data to LCD module are display data or
control data. LCD_RS can select 16 bit parallel bus.
Enable writing to LCD Driver.
Enable reading to LCD Driver.
Select 16bits or 8bits interface mode for MAIN LCD. For the future
2.8V voltage is supplied to LCD driver IC.
Table 3.5.B LCD CONTRON SIGNALS DISCRIPTION
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3. TECHNICAL BRIEF
Description
LGE Internal Use Only