SBC-C31
SBC-C31 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by D.T. - Copyright © 2021 SECO S.p.A.
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LVD/ LVDS_1_TX3-: LVDS Channel #1 differential data pair #3.
LVD/LVDS_1_CLK-: LVDS Channel #1 differential Clock.
LVDS_BKLT_EN: LVDS_LCD_PWR electrical level Output with a 1k
Ω
pull-up resistor, Backlight Enable signal. It can be used to turn On/Off the backlight
’
s lamps of
connected displays.
PVCC_EN: LVDS_LCD_PWR electrical level Output with a 1k
Ω
pull-up resistor, Panel Power Enable signal. It can be used to turn On/Off the connected display.
LVDS_BKLT_PWM: this signal can be used to adjust the backlight brightness in displays supporting Pulse Width Modulated (PWM) regulations (LVDS_LCD_PWR
electrical level).
BKLT_AN_CTRL: Analog dimming for backlight, electrical level ranging from 0V up to LVDS_LCD_PWR
I2C_SCL: I2C Bus clock line. Bidirectional signal, electrical level +3.3V_RUN with a 2K2
Ω
pull-up resistor. It is managed by the processor
’
s I2C controller #5.
I2C_SDA: I2C Bus data line. Bidirectional signal, electrical level +3.3V_RUN with a 2K2
Ω
pull-up resistor. It is managed by the processor
’
s I2C controller #5.
TOUCH_RST: +3.3V_RUN electrical level output, active high signal with a 10k
Ω
pull-down resistor. This signal can be used to drive a reset of an eventual external
Touch Screen connected to the dedicated I2C interface.
TOUCH_INT#: +3.3V_RUN electrical level input with a 10k
Ω
pull-up resistor. This signal can be used to serve the interrupt request of an eventual external Touch
Screen connected to the dedicated I2C interface.
LVDS_LCD_PWR: LCD switched voltage rail. Its value can be set to +3.3V_ALW or +5V_ALW
by using dedicated jumper CN34, which is a standard pin header, P2.54mm, 1x3 pin.
LVDS_BKLT_PWR: Backlight switched voltage rail. Its value can be set to +5V_ALW or
+12V_ALW by using dedicated jumper CN35, same type of CN34.
Since the use of jumpers in environments with vibrations issues could be a problem, it is possible to provide SC31 boards with the LCD Power and Backlight Power
fixed at the desired value. For this purpose, some dedicated 0-Ohm resistors can be mounted (factory default: not available). Please contact your local Sales rep in
case you need this special configuration.
CN34 position
LVDS LCD Power selector
1-2
+3.3V_ALW
2-3
+5V_ALW
CN35 position
LVDS Backlight Power selector
1-2
+5V_ALW
2-3
+12V_ALW
