SBC-C41-pITX
SBC-C41-pITX User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R./S.B. - Reviewed by M.B. Copyright © 2021 SECO S.p.A.
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LVD/LVDS_B_CLK-: LVDS Channel B differential Clock.
LVDS_I2C_DAT: DisplayID I2C Data line for LVDS flat Panel detection. Bidirectional signal, electrical level +3.3V_RUN with a 2k2
Ω
pull-up resistor.
LVDS_I2C_CLK: DisplayID I2C Clock line for LVDS flat Panel detection. Bidirectional signal, electrical level +3.3V_RUN with a 2k2
Ω
pull-up resistor.
BKLT_EN: +3.3V_RUN electrical level Output with a 10k
Ω
pull-down resistor, Backlight Enable signal. It can be used to turn On/Off the backlight
’
s lamps of connected
displays.
PVCC_EN: +3.3V_RUN electrical level Output with a 10k
Ω
pull-down resistor, Panel Power Enable signal. It can be used to turn On/Off the connected display.
BKLT_PWM: this signal can be used to adjust the backlight brightness in displays supporting Pulse Width Modulated (PWM) regulations (+3.3V_RUN electrical level).
TOUCH_SCL: I2C Bus clock line. Bidirectional signal, electrical level +3.3V_RUN with a 2K2
Ω
pull-up resistor. It is managed by the
I2C controller #4.
TOUCH_SDA: I2C Bus data line. Bidirectional signal, electrical level +3.3V_RUN with a 2K2
Ω
pull-up resistor. It is managed by
I2C controller #4.
TOUCH_RST#: +3.3V_ALW electrical level output, active low. 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 100k
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.
LCD_PWR: LCD Voltage rail. Its value can be set to +3.3V_ALW or +5V_ALW by using dedicated jumper CN5,
which is a standard pin header, P2.54mm, 1x3 pin.
BKLT_PWR: Backlight Voltage rail. Its value can be set to +5V_ALW or +12V_ALW by using dedicated jumper
CN6, which is another standard pin header, P2.54mm, 1x3 pin.
As an alternative, especially for applications where vibrations are a problem, it is possible to set LCD_PWR and BKLT_PWR voltage values by closing the circuit
breakers that are located under the pin headers (they are normally not accessible on samples, due to the presence of the pin header, but could be requested for
mass productions).
CN5 position
LCD_PWR voltage value
1-2
+3.3V_ALW
2-3
+5V_ALW
CN6 position
BKLT_PWR voltage value
1-2
+5V_ALW
2-3
+12V_ALW
