Seco Qseven CQ7-A30 User Manual page 75

4.2.2 HDMI working mode
®
If the Qseven module used with CQ7-A30 carrier board offers direct support for HDMI displays, then it is necessary to plug the adapter module VA65 in
DP++/HDMI slot using the adapter's dedicated edge connector CN1.
HDMI connector - CN2
Pin Signal
1 TMDS_LANE2+
3 TMDS_LANE2-
5 GND
7 TMDS_LANE0+
9 TMDS_LANE0-
11 GND
13 HDMI_CEC
15 HDMI_CTRL_CLK
17 GND
19 HDMI_HPD
signal will be available on the DP++/HDMI card edge connector only in case that jumper JP5 on the carrier board is placed in position 2-3.
HDMI_HPD: Hot Plug Detect Input signal.
For ESD protection, on all signal lines are placed clamping diodes for voltage transient suppression.
Always use HDMI-certified cables for the connection between the board and the HDMI display; a category 2 (High-Speed) cable is recommended for higher
resolutions, category 1 cables can be used for 720p resolution.
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
2 GND
4 TMDS_LANE1+
6 TMDS_LANE1-
8 GND
10 TMDS_CLK+
12 TMDS_CLK-
14 ---
16 HDMI_CTRL_DAT
18 +5V
HDMI
In this case, only the module's connector CN2 will be usable, which is a standard
certified HDMI connector, type A, model HIROSE p/n MD60-19P, with the pinout shown
in the table on the left.
Signals involved in HDMI management are the following:
TMDS_CLK+/TMDS_CLK-: TMDS differential Clock.
TMDS_LANE0+/TMDS_LANE0-: TMDS differential pair #0.
TMDS_LANE1+/TMDS_LANE1-: TMDS differential pair #1.
TMDS_LANE2+/TMDS_LANE2-: TMDS differential pair #2.
HDMI_CTRL_DAT: DDC Data line for HDMI panel.
HDMI_CTRL_CLK: DDC Clock line for HDMI panel.
HDMI_CEC: HDMI Consumer Electronics Control (CEC) Line. As already described in the
description of DP++ connector CN4, this signal is, in reality, a General Purpose 1_wire
bus interface, that can be used for implementation of HDMI_CEC functionality. The
support of such functionality depends on the Qseven
®
module used. Furthermore, this
75