Installation Instructions
EC3-1820V2NA
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2.7 LCD Backlight Control Port
This board provides one 1×4Pin wafer LCD backlight control port (pitch: 2.0mm). Its
pin definition is as follows:
Pin
Signal Name
1 VCC_LCDBKLT
2 LCD_BKLTCTL
3 LCD_BKLTEN
LCDB1
4 GND
Note: VCC_LCDBKLT--+12V backlight power supply (The current is limited under
1A);
LCD_BKLTCTL--backlight control (The signal is directly output from CPU, and
is PWM signal. The voltage amplitude is 0V—3.3V, and the duty ratio is within
0%
～
100%);
LCD_BKLTEN--backlight enable, highly effective (The signal of the board is
directly output from CPU, and is CMOS output. The voltage amplitude is
0V-3.3V).
2.8 Display Port
1. This motherboard provides one standard DB15 VGA port. Its pin definition is as
follows:
Pin
Signal Name
Pin
Signal Name
1 Red 2 Green
3 Blue 4 NC
5 GND 6 GND
7 GND 8 GND
9 NC 10 GND
11 NC 12
DDCDATA
13 HSYNC 14 VSYNC
VGA1
15 DDCCLK
