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eDP0_HPD_3.3V: embedded DP channel#0 Hot Plug Detect for SMARC
LCD0_VDD_EN_3V3: eDP channel#0 Panel power for LCD Enable Signal, derived by LCD0_VDD_EN from SMARC
+3.3V_RUN electrical level Output.
LCD0_BKLTEN_3V3: eDP channel#0 Panel power for Backlight Enable Signal, derived by LCD0_BKLT_EN from SMARC
+3.3V_RUN electrical level Output.
LCD0_BKLT_PWM_3V3: eDP channel#0 Panel Backlight Brightness Control, PWM signal derived by LCD0_BKLT_PWM from SMARC
translator. +3.3V_RUN electrical level Output.
Here following the signals involved in eDP channel#1 management:
eDP1_TX[0..3]+ / eDP1_TX[0..3]-: SMARC
eDP1_AUX+ / eDP1_AUX-: SMARC
eDP1_HPD_3.3V: embedded DP channel#1 Hot Plug Detect for SMARC
LCD1_VDD_EN_3V3: eDP channel#1 Panel power for LCD Enable Signal, derived by LCD1_VDD_EN from SMARC
+3.3V_RUN electrical level Output.
LCD1_BKLTEN_3V3: eDP channel#1 Panel power for Backlight Enable Signal, derived by LCD1_BKLT_EN from SMARC
+3.3V_RUN electrical level Output.
LCD1_BKLT_PWM_3V3: eDP channel#1 Panel Backlight Brightness Control, PWM signal derived by LCD1_BKLT_PWM from SMARC
translator. +3.3V_RUN electrical level Output.
3.3.4 LCD Panels Voltage connectors
LCD Panel #0 Voltage connector
Pin
Signal
Pin
1
VDD_LCD0
2
3
+5V_RUN
4
5
LCD0_VDD_EN_3V3
6
7
---
8
9
GND
10
CN16 and CN17, are two IDC connectors, dual row, 10 pin, p2.54 mm connector, type MOLEX p/n 70246-1004 or equivalent.
Mating connector: MOLEX p/n 22-25-2102 with 70058 series female crimp terminals.
CSM-B79
CSM-B79 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R - Reviewed by S.R. - Copyright © 2021 SECO S.p.A.
®
module embedded DP channel#1 differential data pairs
®
module embedded DP channel#1 auxiliary channel differential data pair.
CN16
LCD Panel #1 Voltage connector
Signal
Pin
Signal
VDD_BKLT0
1
VDD_LCD1
+12V_RUN
3
+5V_RUN
LCD0_BKLTEN_3V3
5
LCD1_VDD_EN_3V3
LCD0_BKLT_PWM_3V3
7
---
GND
9
GND
®
module. Active high signal, +3.3V_RUN electrical level
®
module. Active high signal, +3.3V_RUN electrical level
CN17
Pin
Signal
2
VDD_BKLT1
4
+12V_RUN
6
LCD1_BKLTEN_3V3
8
LCD1_BKLT_PWM_3V3
10 GND
®
Module through voltage level translator.
®
Module through voltage level translator.
®
Module through voltage level
®
Module through voltage level translator.
®
Module through voltage level translator.
®
Module through voltage level
It is possible to use two additional connectors for
connecting LCD panels voltage rails, both for
LCD and for backlights.
LCD and backlight voltages can be set by using
dedicated jumpers CN18, CN19, CN20 and
CN21 described in par.3.3.2.
40
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