AXEL Lite SOM/AXEL Lite Evaluation Kit/Interfaces and Connectors/LVDS
< AXEL Lite SOM | AXEL Lite Evaluation KitRevision as of 15:13, 19 October 2020 by U0007 (talk | contribs) (Created page with "<section begin=History/> {| style="border-collapse:collapse; " !colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History |- !style="border-le...")
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| History | |||
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| Version | Issue Date | Notes | |
| 1.0.0 | Oct 2020 | First DESK release | |
Contents
LVDSEdit
DescriptionEdit
SBCX provides two LVDS interfaces, LVDS0 and LVDS1.
- J8 is a Hirose (cod. DF13A-20DP-1.25V) double row 1.25mm pitch miniature crimping connector
- J9 is a Hirose (cod. DF13A-20DP-1.25V) double row 1.25mm pitch miniature crimping connector
SignalsEdit
The following tables describes the interface signals
LVDS0Edit
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1, 2 | - | 3.3V_LCD0 | 3.3 V | |
| 3, 4, 7, 10,
13, 16, 19 |
- | DGND | Ground | |
| 5 | J10.137 | LVDS0_TX0_N | LVDS Data 0 - | |
| 6 | J10.139 | LVDS0_TX0_P | LVDS Data 0 + | |
| 8 | J10.141 | LVDS0_TX1_N | LVDS Data 1 - | |
| 9 | J10.143 | LVDS0_TX1_P | LVDS Data 1 + | |
| 11 | J10.145 | LVDS0_TX2_N | LVDS Data 2 - | |
| 12 | J10.147 | LVDS0_TX2_P | LVDS Data 2 + | |
| 14 | J10.133 | LVDS0_CLK_N | LVDS Clock - | |
| 15 | J10.135 | LVDS0_CLK_P | LVDS Clock + | |
| 17 | J10.149 | LVDS0_P17 | Mount options | LVDS0_TX3_N option |
| 18 | J10.151 | LVDS0_P18 | Mount options | LVDS0_TX3_P option |
| 20 | J10.46 | LVDS0_P20 | Mount options | GND or PWM (J10.46) option |
LVDS1Edit
| Pin# | SOM Pin# | Pin name | RS-232 | RS-422 | RS-485 |
|---|
Device mappingEdit
- LVDS0 is mapped to
/dev/fb0device in Linux - LVDS1 is mapped to the corresponding device driver in Linux, depending on the
ldbperipheral configuration in the device tree. The default value is disabled but can be mapped to/dev/fb2(second and independent LCD panel) or can be the second LVDs channel for a dual-channel LCD panel configuration (like a 1920x1080 DUAL LVDS channel LCD panel)
Device usageEdit
The associated framebuffer device is accessed in Linux through the standard graphic access.