SBC-C20
SBC-C20 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. -Copyright © 2020 SECO S.p.A.
26
eDP Connector
SBC-C20 offer a dedicated embedded Display Port
interface.
For the connection of this kind of displays, on-board there
is a VESA
®
certified connectors for embedded Display Port
interface, type STARCONN p/n 300E40-0110RA-G3 or equivalent (microcoaxial cable connector,
0.5mm pitch, 40 positions). This interface is multiplexed with the HDMI interface (par 3.3.6).
On this connector, VCC_BKL_SW and VCC_LCD_SW are the software-enabled voltage rails that
can be used to supply the LCD and related Backlight Unit.
The LCD software-driven voltage, i.e. signal VCC_LCD_SW, can be manually configured to be
connected to VDD_3P3V or +5V_ALW. Please check par. 3.3.23 for details.
Instead, the backlight software-driven voltage, i.e. signal VCC_BKL_SW, can be factory regulated
regulated to be connected to +5V_ALW or VIN_SYS
These are factory configurations, please take care of specifying which is the configuration needed
for VCC_BKL_SW voltage rail.
Here following the signals involved in eDP management:
eDP_ML0P/eDP_ML0N : embedded DP differential data pair #0.
eDP_ML1P/eDP_ML1N : embedded DP differential data pair #1.
eDP_ML2P/eDP_ML2N : embedded DP differential data pair #2.
eDP_ML3P/eDP_ML3N : embedded DP differential data pair #3.
eDP_AUXN/eDP_AUXP: embedded DP auxiliary channel differential data pair.
eDP_HPD: embedded DP Hot Plug Detect. +VDD_3P3V electrical level signal.
DISPLAY_BKL_CTRL: this signal can be used to adjust the backlight brightness in displays
supporting Pulse Width Modulated
pull-up resistor).
DISPLAY_BKL_ON:
-up
resistor
eDP connector CN21
Pin Signal
Pin Signal
1
---
21
VCC_LCD_SW
2
VCC_BKL_SW
22
VCC_LCD_SW
3
VCC_BKL_SW
23
VCC_LCD_SW
4
VCC_BKL_SW
24
GND
5
VCC_BKL_SW
25
eDP_AUX_N
6
---
26
eDP_AUX_P
7
---
27
GND
8
DISPLAY_BKL_CTRL
28
eDP_ML0P
9
DISPLAY_BKL_ON
29
eDP_ML0N
10
GND
30
GND
11
GND
31
eDP_ML1P
12
GND
32
eDP_ML1N
13
GND
33
GND
14
eDP_HPD
34
eDP_ML2P
15
GND
35
eDP_ML2N
16
GND
36
GND
17
GND
37
eDP_ML3P
18
GND
38
eDP_ML3N
19
---
39
GND
20
VCC_LCD_SW
40
---
