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®
Qseven
module used doesn't support the HDMI_CEC functionality, then this signal could be not available or have a different utilisation. Please refer to the User
Guide of the Qseven
®
module used for more information on this signal.
Optional HDMI connector - CN19
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
description of optional DP connector, 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
HDMI_HPD: Hot Plug Detect Input signal.
For ESD protection, on all data and voltage 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-D59
CQ7-D59 - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.O. - Reviewed by S.B. Copyright © 2021 SECO S.p.A.
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
®
module used.
The second possible configuration is to have the carrier board with a HDMI connector
mounted.
In this case, the connector mounted will be a standard certified
HDMI connector, type A, model FCI Connect p/n 10029449-
111RLF, 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
34
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