LG G5300 Service Manual page 34

Interconnection with external devices
RTC block interface
Countered by external X-TAL
The X-TAL oscillates 32.768KHz
LCD module interface
Mainly controlled by _LCD_MAIN_CS, LCD_RES, LCD_RS, _WR, DATA [00...15] signals.
_LCD_MAIN_CS
LCD_RES
LCD_RS (ADD1)
__WR
DATA [00...15]
3V0_VLCD
LCD_BACKLIGHT
_CTL
RF interface
The AD6522 control RF parts through TXEN, RXON1, RXON2, AGCEN, PLL_DATA, PLL_CLK,
PLL_LE etc.
Signal Name
TXEN
RXON1
RXON2
AGCEN
PLL_DATA
PLL_CLK
PLL_LE
LCD driver chip enable. LCD driver IC has own CS pin
This pin resets LCD module.
This pin determines whether the data to LCD module are display data or
control data. ADD1 can select 16 bit parallel bus. ADD1 is also used to
address flash memory.
Write control. The phone do not read data from LCD chip.
Parallel data lines. Color LCD driver chip uses the 16-bit data interface.
Regulated 3V voltage is supplied to white colored LED driver for backlighting.
Control signal of white LED driver IC.
TX Enable/Disable
LNA, Mixer 1 On/Off
Mixer 2 On/Off
AGC Enable/Disable
Serial Data to PLL
Clock to PLL
PLL Enable/Disable
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Table 3-3.
Description
Table 3-4.
Description
3. TECHNICAL BRIEF