SBC-C43
SBC-C43 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by S.R. -Copyright © 2020 SECO S.p.A.
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3.3
Connectors description
HDMI Connectors
NXP i.MX 8 family of processor has an embedded HDMI Tx module, which provides a HDMI
standard interface for HDMI1.4 / 2.0a compliant displays.
For this reason, on SBC-C43 board there is the possibility of connecting directly
one HDMI display, using a certified micro-HDMI connector (HDMI type D),
CN28, type FCI p/n 10118242-001RLF.
Signals involved in HDMI Tx management are the following:
H/HMDI_CLK-: TMDS differential Clock.
H/ HDMI_TX0-: TMDS differential pair #0
H/ HDMI_TX1-: TMDS differential pair #1
H/ HDMI_TX2-: TMDS differential pair #2
SDA: DDC Data line for HDMI panel. Bidirectional signal, electrical level +5V
HDMI
with a 2
-up
resistor.
SCL: DDC Clock line for HDMI panel. Output signal, electrical level +5V
HDMI
with a 2
-up
resistor.
CEC: HDMI Consumer Electronics Control (CEC) Line. Bidirectional signal, electrical level
+3.3V_RUN
-up resistor.
HPD: Hot Plug Detect Input signal. +3.3V_RUN
-down resistor.
+5V
HDMI
: Power voltage reference for HDMI, directly derived from +5V_RUN.
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.
HDMI Out Connector CN28
Pin Signal
Pin Signal
1
HPD
2
----
3
H
4
GND
5
HDMI_TX2-
6
H
7
GND
8
HDMI_TX1-
9
H
10
GND
11
HDMI_TX0-
12
H
13
GND
14
HDMI_CLK-
15
CEC
16
GND
17
SCL
18
SDA
19
+5V
HDMI