Lvds Connector - Seco COM-Express CCOMe-965 User Manual

3.3.10 LVDS Connector

CCOMe-965 board can be interfaced to LCD displays using its LVDS interface, which allows the connection of displays with a colour depth of 18 or 24 bit, single
or dual channel.
LVDS Connector - CN18
Pin Signal Pin
2 LVDS_I2C_CK
4 +3.3V_S
6 GND
8 LVDS_A0+
10 LVDS_A1-
12 LVDS_BACKLIGHT_EN
14 LVDS_A2-
16 LVDS_A_CK-
18 LVDS_BKLT_CTRL
20 LVDS_A3-
22 LVDS_B0-
24 GND
26 LVDS_B1+
28 LVDS_B2-
30 GND
32 LVDS_B_CK-
34 LVDS_B3+
CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
Signal
1 LVDS_I2C_DAT
3 +3.3V_S
5 LVDS_A0-
7 LVDS_PWR_EN
9 LVDS_A1+
11 LVDS_A2+
13 eDP_HPD
15 LVDS_A_CK+
17 LVDS_A3+
19 GND
21 LVDS_B0+
23 LVDS_B1-
25 GND
27 LVDS_B2+
29 LVDS_B_CK+
31 N.C.
33 LVDS_B3-
Please notice that the effective support of this kind of
displays depends only by the COM Express module
used with the carrier board, it is not a feature dependent
from the carrier board itself. Please refer to the User
Manual of the CPU module used for the details
regarding the panel supported.
For the connection, a connector type JST B34B-PHDSS or equivalent (2 x 17p, male,
straight, P2, low profile, polarised) is provided, with the pin-out shown in the table on the left.
Mating connector: JST p/n PHDR-34VS with HR SPHD-002T-P0.5 female crimp terminals.
Display Data Channel signals are also provided, in case that the COM Express module used
supports them.
Most of the signals available on this connector come out directly from the COM Express
connector CN1; please check the related table for a description of the signals.
LVDS_BACKLIGHT_EN is the signal used for Backlight enabling, is the logical conjunction (i.e.
AND) of the signal LVDS_BLEN and the signal CB_RST#.
LVDS_PWR_EN is the signal used for LCD enabling, is the logical conjunction (i.e. AND) of
the signal LVDS_VDD_EN and the signal CB_RESET#.
These operations on signals LVDS_BACKLIGHT_EN and LVDS_VDD_EN have been done so
that at each reset of the module, the eventually connected backlight and display will also turn
off themselves.
90Ω @ 100MHz common mode chokes are placed on all LVDS differential pairs for EMI
reduction.
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