LG W3000 Service Manual page 35

3. TECHNICAL BRIEF
Interconnection with external devices
RTC block interface
Countered by external X-TAL(32.768KHz)
LCD module interface
LCD_MAIN_CS
LCD_RES
LCD_RS
_WR,_RD
DATA[00...07]
Memory interface.
16 bit parallel interface.
Addressing ADD01 ~ ADD21.
SIM interface
The AD6522 check status periodically in call mode if SIM card is inserted, but the AD6522 don't
check in deep sleep mode. The phones support only 3.0 volt interface SIM card.
Key interface
Include 5 column and 5 row The AD6522 detect key press by interrupt.
AD3408 interface
EOC
CHARGERDETECT: This interrupt is generated when charger is inserted
RF interface
The AD6522 control RF parts through TXEN, RXEN, AGCEN etc.
LCD chip enable
This pin resets LCD module
This pin determines whether the data to LCD module is display data or control
data
Read/Write control
Parallel data line
: End Of Charge. Charging would be stopped when AD6522 receive this signal.
Description
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