Lvds / Mipi-Dsi Connector - Seco Smarc CSM-B79 User Manual

3.3.2 LVDS / MIPI-DSI connector

LVDS connector
Pin Signal Pin
2 VDD_BKLT0 1
4 VDD_BKLT0 3
6 VDD_BKLT0 5
8 GND 7
10 LVDS0_D0+_CONN 9
12 LVDS0_D0-_CONN 11
14 GND 13
16 LVDS0_D2+_CONN 15
18 LVDS0_D2-_CONN 17
20 GND 19
22 LVDS0_CLK+_CONN 21
24 LVDS0_CLK-_CONN 23
26 GND 25
28 LVDS1_D1+_CONN 27
30 LVDS1_D1-_CONN 29
32 GND 31
34 LVDS1_D3+_CONN 33
36 LVDS1_D3-_CONN 35
38 GND 37
40 GND 39
42 LCD0_BKLT_PWM_3V3 41
44 LCD0_VDD_EN_3V3 43
46 --- 45
48 --- 47
50 LVDS_DDC_CLK_3V3 49
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.
According to SMARC
CN14
can be used to implement multi-purpose Digital Display Interfaces.
Signal
The primary display interface can support LVDS video interface, allowing the connection of displays with
VDD_LCD0
a colour depth of 18 or 24 bit, in single or dual channel configuration. Alternatively, the same pins can be
VDD_LCD0
used to support up to two Embedded Display Ports or MIPI DSI interface.
VDD_LCD0
Please notice that the effective support of this kind of displays depends only by the SMARC
used with the CSM-B79 carrier board, it is not a feature dependent from the carrier board itself.
3.3V_RUN
GND
The pin-out of this card edge connector is given according to SMARC
the carrier board is ready for the use of any SMARC
LVDS0_D1+_CONN
refer to the SMARC
LVDS0_D1-_CONN
availability of the LVDS / eDP / MIPI-DSI signals.
GND
CSM-B79 board allows to interface to Single/Dual Channel 18-/24-bit displays, using the LVDS channel
LVDS0_D3+_CONN
coming directly from the SMARC
LVDS0_D3-_CONN
The LVDS interface will be available on connector CN14, type HR A1014WV-S-
GND
2x25P or equivalent (2 x 25p, male, straight, P1, low profile, polarised), with the pin-
out shown in the table on the left
LVDS1_D0+_CONN
LVDS1_D0-_CONN
Mating connector: HR A1014H-2X25P with HR A1014-T female crimp terminals.
GND
Alternative mating connector, MOLEX 501189-5010 with crimp terminals series
LVDS1_D2+_CONN
501334.
LVDS1_D2-_CONN
On the same connector, are also implemented voltage rails that can be used to supply the Backlight Unit
and related LCD and signals for direct driving of display's backlight: voltages (VDD_BKLT0 and
GND
VDD_LCD0) and control signals (LCD enable signal, LCD0_VDD_EN, Backlight enable signal,
LVDS1_CLK+_CONN
LCD0_BKLTEN, and Backlight Brightness Control signal, LCD0_BKLT_PWM).
LVDS1_CLK-_CONN
When building a cable for connection of LVDS displays, please take care of twist as tight as possible
GND
differential pairs' signal wires, in order to reduce EMI interferences. Shielded cables are also
LCD0_BKLTEN_3V3
recommended.
---
Signal Description:
---
LVDS0_D[0..3]+_CONN / LVDS0_D[0..3]-_CONN: SMARC
---
LVDS0_CLK+_CONN / LVDS0_CLK-_CONN: SMARC
LVDS_DDC_DAT_3V3
®
Rel. 2.1.1 specification, the primary display interface from card edge connector
®
®
®
module Single-Dual Channel 18-24-bit connector.
®
®
Rel. 2.1.1 specifications, so that
module that follows those specifications. Please
®
Module LVDS Channel#0 Differential pairs
Module LVDS Channel#0 Differential clock
®
module
35