Kontron SMARC-sA3874i - Manual (Page 23)

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User’s Guide
3.2.10 High-Definition-Multimedia-Interface (HDMI) Interface
The ULP-COM sA3874i module supports a single HDMI interface with a resolution up to 1920x1080 pixels.
HDMI signals are exposed on the ULP-COM sA3874i edge connector as shown below:
ULP-COM sA3874i Edge finger TI Cortex A8 CPU Net Name Notes
Pin # Pin Name Pin # Pin Name
HDMI Differential Signals
P98 HDMI_D0_P AG19 HDMI_DP0 HDMI_D0+ HDMI
Differential
Data pair
0 output
P99 HDMI_D0_N AH19 HDMI_DN0 HDMI_D0-
P95 HDMI_D1_P AG20 HDMI_DP1 HDMI_D1+ HDMI
Differential
Data pair 1
output
P96 HDMI_D1_N AH20 HDMI_DN1 HDMI_D1-
P92 HDMI_D2_P AG21 HDMI_DP2 HDMI_D2+ HDMI
Differential
Data pair 2
output
P93 HDMI_D2_N AH21 HDMI_DN2 HDMI_D2-
P101 HDMI_CK_P AG18 HDMI_CLKP HDMI_CK+ HDMI
Differential
clock output
P102 HDMI_CK_N AH18 HDMI_CLKN HDMI_CK-
HDMI Support signals
P104 HDMI_HPD AA26 HDMI_HPDET HDMI_HPD
HDMI Hot Plug
Detect input
P105 HDMI_CTRL_CK AF24 HDMI_SCL HDMI_DDC_SCL_1V8
HDMI dedicated
I2C Clock
P106 HDMI_CTRL_DAT AG24 HDMI_CNTL_DAT HDMI_DDC_SDA_1V8
HDMI dedicated
I2C Data
P107 HDMI_CEC AB27 HDMI_CEC HDMI_CEC Not used
The Carrier board must provide voltage translation for the DDC and HPD signals, as well as ESD protection on all
the HDMI signals. The Carrier board ESD protection is important as HDMI is a hot-pluggable interface. A device
such as the Texas Instruments TPD12S016 is recommended. The Kontron ULP-COM Evaluation Board schematic
(KAI 501-146) is useful as an implementation example.