Only For Training And Service Purposes - LG KP175 Service Manual

3. TECHNICAL BRIEF
The backlight of LCD module is controlled by AD6726 via AAT3155.
The control signals related to Backlight LED are given bellow.
Signals
MLED
LCD_BACKLIGHT_CTRL
MLED[1:2]
Table 3.5.B2 DESCRIPTION OF LCD BACKLIGHT LED CONTROL
C. RF interface
The AD6726 control RF parts through PA_BAND, ANT_SW , CLKON , PA_EN, S_EN, S_DATA,
S_CLK
Signals
PA_BAND (GPO 3)
ANT_SW (GPO 9)
PA_EN (GPO 11)
S_CLK (GPO 21)
S_EN (GPO 19)
S_DATA (GPO 20)
LGE Internal Use Only
Current source for backlight LED
Control LCD backlight level in 16 steps
This pins are returned-paths for backlight LED current source (MLED)
PAM Band Select
Control logic level selection/ standby control
Tx/Rx Select
Clock to PLL
PLL Enable/Disable
Serial Data to PLL
Table 3.5.C RF CONTROL SIGNALS DESCRIPTION
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Description
Description
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Only for training and service purposes