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Lcd inverter connector (jbkl1), 1 signal description – Avalue EEV-EX14 User Manual

Page 21

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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