SBC-992-pITX
SBC-992-pITX User Manual - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G Copyright © 2016 SECO S.r.l.
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3.3.4
HDMI connector
AMD G-series SOC offers a HDMI 1.4a compliant interface.
For this reason, on SBC-992-pITX board there is the possibility of connecting
directly one HDMI displays, using a standard certified HDMI connector, type A,
model TYCO Electronics p/n 2007435-1.
Signals involved in HDMI management are the following:
T/TMDS_CLK-: TMDS differential Clock.
TMD/TMDS_LANE0-: TMDS differential pair #0
TMD/TMDS_LANE1-: TMDS differential pair #1
TMD/TMDS_LANE2-: TMDS differential pair #2
SDA: DDC Data line for HDMI panel. Bidirectional signal, electrical level +5V
HDMI
with a 2k2
Ω
pull-up resistor.
SCL: DDC Clock line for HDMI panel. Output signal, electrical level +5V
HDMI
with a 2k2
Ω
pull-
up resistor.
CEC: HDMI Consumer Electronics Control (CEC) Line. Bidirectional signal, electrical level
+3.3V_A with a 27k
Ω
pull-up resistor.
HPD: Hot Plug Detect Input signal. +3.3V_S electrical level signal with 100k
Ω
pull-down resistor
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 Connector - CN20
Pin Signal
Pin Signal
1
TMD
2
GND
3
TMDS_LANE2-
4
TMD
5
GND
6
TMDS_LANE1-
7
TMD
8
GND
9
TMDS_LANE0-
10
T
11
GND
12
TMDS_CLK-
13
CEC
14
---
15
SCL
16
SDA
17
GND
18
+5V
HDMI
19
HPD
