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On the other side, if the VA64 module is plugged in the carrier's CN20 slot using the CN9 edge connector (marked with the writing "eDP interface"), then the
signals coming from the CQ7-A30 carrier board will be carried to connectors CN5, CN6, CN7 and CN3, and will be usable for the connection of eDP displays.
4.1.1 LVDS working mode
®
If the Qseven
module used with CQ7-A30 carrier board offers an LVDS interface, then it is necessary to plug the adapter module in LVDS/eDP slot using the
adapter's dedicated edge connector CN4.
In this case, only the module's connectors CN1, CN2 and CN3 will be usable.
LVDS connector - CN1
Pin
Signal
2
LVDS_DID_DAT
4
N.C.
6
GND
8
LVDS_A0+
10
LVDS_A1-
12
LVDS_BACKLIGHT_EN
14
LVDS_A2-
16
LVDS_A_CLK-
18
LVDS_BLT_CTRL
20
LVDS_A3-
22
LVDS_B0-
24
GND
26
LVDS_B1+
28
LVDS_B2-
30
GND
32
LVDS_B_CLK-
34
LVDS_B3+
CQ7-A30
CQ7-A30 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
Pin
Signal
1
LVDS_DID_CLK
3
N.C.
5
LVDS_A0-
7
LVDS_VDD_EN
9
LVDS_A1+
11
LVDS_A2+
13
N.C.
15
LVDS_A_CLK+
17
LVDS_A3+
19
GND
21
LVDS_B0+
23
LVDS_B1-
25
GND
27
LVDS_B2+
29
LVDS_B_CLK+
31
N.C.
33
LVDS_B3-
For the connection, a connector type JST S34B-
PHDSS or equivalent (2 x 17p, male, right angle, 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 Qseven
supports them.
Most of the signals available on this connector come out directly from the Qseven
connector; please check the related table for a description of the signals.
is the signal used for Backlight enabling, is the logical conjunction
LVDS_BACKLIGHT_EN
(i.e. AND) of the signal LVDS_BLEN and the signal PLT_RST#.
is the signal used for LCD enabling, is the logical conjunction (i.e. AND) of
LVDS_VDD_EN
the signal LVDS_PPEN and the signal PLT_RST#.
These operations on signals
LVDS_BACKLIGHT_EN
that at each reset of the module, the eventually connected backlight and display will also
turn off themselves.
®
module used
and
have been done so
LVDS_VDD_EN
®
67
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