AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/LVDS

History
Version	Issue Date	Notes
1.0.0	Jul 2021	First DESK release

LVDS interface

Description

The LVDS interface available on the Evaluation Kit at the connector J20. J20 is a Hirose (cod. DF13A-20DP-1.25V) double row 1.25mm pitch miniature crimping connector

The AXEL ULite Evaluation Kit provides a 18-bit LVDS interface.

LVDS connector

Signals

The LVDS is generated, starting from the RGB i.MX6UL SOC, with a RGB-to-LVDS DS90C385A LVDS transmitter. For the RGB pin mapping, please refer to the AXEL_ULite RGB interface description.

The following tables describes the interface signals:

Pin#	Pin name	Pin function
1, 2	3.3V_LCD	3.3 V LCD PSU
3, 4, 7, 10, 13, 16, 19	-	Ground
5	LVDS_TX0_N	LVDS Data 0 -
6	LVDS_TX0_P	LVDS Data 0 +
8	LVDS_TX1_N	LVDS Data 1 -
9	LVDS_TX1_P	LVDS Data 1 +
11	LVDS_TX2_N	LVDS Data 2 -
12	LVDS_TX2_P	LVDS Data 2 +
14	LVDS_CLK_N	LVDS Clock -
15	LVDS_CLK_P	LVDS Clock +
17	PWM	backlight PWM control
18	5V	backlight 5V PSU
19	GPIO	3V3 or GND (mount option, default = GND)
20	BL_EN	backlight enable

Device mapping

• LVDS is mapped to /dev/fb0 device in Linux

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