Avalue EEV-EX14 - Manual (Page 21)

Quick Installation Guide
EEV-EX14 Quick Installation Guide 21
2.3.21 LCD Inverter connector (JBKL1)
Signal PIN
+12V_BKL 1
GND 2
BKLEN 3
LVDS_BKLT_CTRL/PWM 4
+5V 5
Note:
For inverter with brightness control function through LVDS_BKLT_CTRL/PWM signal (Pin-4) , it
is possible to control the brightness level by carrier board's JVR1 pin2. In this case, R179 would
be removed to disconnect the PWM control signal from COMExpress module (CN1A Pin-B84).
2.3.21.1 Signal Description – LCD Inverter connector (JBKL1)
Signal Signal Description
LVDS_BKLT_CTRL
when LVDS_BKLT_CTRL is controlled by carrier board's JVR1,
Vadj = 0.75V ~ 4.25V (Recommended: 4.7K Ω, >1/16W)
BKLEN LCD backlight ON/OFF control signal