X86
UDOO X86 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by M.B. Copyright © 2017 SECO S.r.l.
26
3.3.3
HDMI connector
The Intel
®
Braswell family of SoCs offer three Digital Display Interfaces, configurable to work in
HDMI/DVI/DP++ modes.
On the UDOO x86 board, the Digital Display Interface #0 is used to implement a HDMI
interface.
Therefore, on-board it is available a standard certified HDMI connector, right-angle, type A,
WIN WIN P/N WDMI-19F4L1BN5U1.
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 2k
Ω
pull-up resistor.
SCL: DDC Clock line for HDMI panel. Output signal, electrical level +5V
HDMI
with a 2k
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 and Schottky Diode.
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 - CN2
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
