Connectors Description; Hdmi / Multimode Display Port Connectors - Seco SBC-C41-pITX User Manual

3.3 Connectors description

3.3.1

HDMI / Multimode Display Port Connectors

HDMI Connector - CN22
Pin Signal Pin
1 TMDS_LANE2+
3 TMDS_LANE2-
5 GND
7 TMDS_LANE0+
9 TMDS_LANE0- 10
11 GND 12
13 CEC 14
15 SCL 16
17 GND 18
19 HPD
CEC: HDMI Consumer Electronics Control (CEC) Line. Bidirectional signal, electrical level +3.3V_ALW with a 27kΩ pull-up resistor.
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.
SBC-C41-pITX
SBC-C41-pITX User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R./S.B. - Reviewed by M.B. Copyright © 2021 SECO S.p.A.
SBC-C41 board can offer an HDMI interface plus an optional DP++
interfaces.
Signal
this interface will be available on connector CN22, which is an HDMI approved connector type
2 GND
Freeport p/n 51L019S-30GN-BD.
4 TMDS_LANE1+
Signals involved in HDMI management are the following:
6 TMDS_LANE1-
TMDS_CLK+/TMDS_CLK-: TMDS differential Clock.
8 GND
TMDS_LANE0+/TMDS_LANE0-: TMDS differential pair #0
TMDS_CLK+
TMDS_LANE1+/TMDS_LANE1-: TMDS differential pair #1
TMDS_CLK-
TMDS_LANE2+/TMDS_LANE2-: TMDS differential pair #2
---
SDA: DDC Data line for HDMI panel. Bidirectional signal, electrical level +5V
SDA
pull-up resistor.
+5V
HDMI
SCL: DDC Clock line for HDMI panel. Output signal, electrical level +5V
up resistor.
with a 1k8Ω
HDMI
with a 1k8Ω pull-
HDMI
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