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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
Pin #
Pin #
Pin Name
Pin Name
Net Name
Notes
HDMI
Differential
Data pair
0 output
HDMI Differential Signals
P98
HDMI_D0_P
AG19
HDMI_DP0
HDMI_D0+
P99
HDMI_D0_N
AH19
HDMI_DN0
HDMI_D0-
P95
HDMI_D1_P
AG20
HDMI_DP1
HDMI_D1+
P96
HDMI_D1_N
AH20
HDMI_DN1
HDMI_D1-
P92
HDMI_D2_P
AG21
HDMI_DP2
HDMI_D2+
P93
HDMI_D2_N
AH21
HDMI_DN2
HDMI_D2-
P101
HDMI_CK_P
AG18
HDMI_CLKP
HDMI_CK+
P102
HDMI_CK_N
AH18
HDMI_CLKN
HDMI_CK-
HDMI
Differential
Data pair 1
output
HDMI
Differential
Data pair 2
output
HDMI
Differential
clock output
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.
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