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S3C2410A LCD CONTROLLER
15-25
LCD POWER ENABLE (STN/TFT)
The S3C2410A provides Power enable (PWREN) function. When PWREN is set to make PWREN signal enabled,
the output value of LCD_PWREN pin is controlled by ENVID. In other words, If LCD_PWREN pin is connected to the
power on/off control pin of the LCD panel, the power of LCD panel is controlled by the setting of ENVID automatically.
The S3C2410A also supports INVPWREN bit to invert polarity of the PWREN signal.
This function is available only when LCD panel has its own power on/off control port and when port is connected to
LCD_PWREN pin.
VSYNC
HSYNC
VDEN
LCD_PWREN
ENVID
VLINE
VFRAME
LCD_PWREN
ENVID
STN LCD
LCD Panel ON
LCD Panel ON
1 FRAME
TFT LCD
Figure 15-8. Example of PWREN Function (PWREN = 1, INVPWREN = 0)