SBC-A62-J
SBC-A62-J User Manual - Rev. First Edition: 1.0 - Last Edition: 2.3 - Author: S.B. - Reviewed by N.P. Copyright © 2016 SECO S.r.l.
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3.3.3
Optional HDMI connector
In addition to LVDS interface, NXP i.MX6 processor also has an embedded HDMI Tx module, which provides a HDMI standard interface for HDMI1.4a compliant
displays. By using HDMI interface along with two LVDS single channel interfaces, it is possible to drive up to 3 independent displays.
For this reason, on SBC-A62-J board there is the possibility of connecting directly one HDMI
display, using a certified HDMI connector type A, model WinWin p/n WHDM-
19F3L1BN5U4.
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 2k7
Ω
pull-up resistor.
SCL: DDC Clock line for HDMI panel. Output signal, electrical level +5V
HDMI
with a 2k7
Ω
pull-
up resistor.
CEC: HDMI Consumer Electronics Control (CEC) Line. Bidirectional signal, electrical level
3P3V with 27k
Ω
pull-up resistor.
HPD: Hot Plug Detect Input signal. +5V
HDMI
with 20k
Ω
pull-down resistor.
+5V
HDMI
is derived from +5V_SB power rail.
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.
Optional HDMI Connector - CN8
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
N.C.
15
SCL
16
SDA
17
GND
18
+5V
HDMI
19
HPD
