S&T Kontron 3.5"-SBC-WLU, User Manual, Page: 60 / 90

3.5"-SBC-WLU - User Guide, Rev. 1.8
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7.18.2. LVDS Backlight Control Selection (JP2)
The 2.0 mm pitch "LVDS Backlight Control Selection" jumper (JP2) can be used to select by which mode the brightness
level in the LCD panel is controlled.
Figure 32: LVDS Backlight Control Selection JP2
Table 38: Pin Assignment JP2
Jumper 1 Position
Description
Pin 1-2 Pin 2-3
X - PWM Control Mode
- X Voltage Control Mode
“
X’’ = Jumper set (short) and ‘‘-’’ = jumper not set (open)
7.18.3. LVDS Backlight Enable Selection (JP3)
The 2.0 mm patch "LVDS Backlight Enable Selection" jumper (JP3) can be used to select voltage level of backlight
enable signal.
Figure 33: LVDS Backlight Enable Selection JP3
Table 39: Pin Assignment JP3
Jumper 1 Position
Description
Pin 1-3 Pin 3-5
X - Backlight Enable Level = +3.3 V
- X Backlight Enable Level = +5 V
Jumper 2 Position
Description
Pin 2-4 Pin 4-6
X - Backlight Enable High Active
- X Backlight Enable Low Active
“
X’’ = Jumper set (short) and ‘‘-’’ = jumper not set (open)
2
3
1
2 1
6 5