Seco SBC-C41-pITX User Manual page 27

Table of Contents

LVDS_B_CLK+/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 2k2Ω pull-up resistor.

LVDS_I2C_CLK: DisplayID I2C Clock line for LVDS flat Panel detection. Bidirectional signal, electrical level +3.3V_RUN with a 2k2Ω pull-up resistor.

BKLT_EN: +3.3V_RUN electrical level Output with a 10kΩ 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 10kΩ 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 2K2Ω pull-up resistor. It is managed by the

TOUCH_SDA: I2C Bus data line. Bidirectional signal, electrical level +3.3V_RUN with a 2K2Ω pull-up resistor. It is managed by

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 100kΩ 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.

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

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).

SBC-C41-pITX

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.

I2C controller #4.

Table of Contents