ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/HDMI
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| 2021/12/10 | First release | ||
HDMI interface[edit | edit source]
Description[edit | edit source]
The HDMI interface available on the Evaluation Kit at the connector J12, labelled as HDMI on the bottom.
J12 is a Mini HDMI horizontal receptacle connector.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 2 | J15.98 | HDMI_D2P | TX pair 2 data + | |
| 3 | J15.96 | HDMI_D2N | TX pair 2 data - | |
| 5 | J15.94 | HDMI_D1P | TX pair 1 data + | |
| 6 | J15.92 | HDMI_D1N | TX pair 1 data - | |
| 8 | J15.90 | HDMI_D0P | TX pair 0 data + | |
| 9 | J15.88 | HDMI_D0N | TX pair 0 data - | |
| 11 | J15.86 | HDMI_CLKP | Tx pair clock + | |
| 12 | J15.84 | HDMI_CLKN | Tx pair clock - | |
| 14 | J15.74 | CEC | Consumer Electric Control | |
| 15 | J15.76 | SCL | I2C clock | |
| 16 | J15.78 | SDA | I2C data | |
| 18 | - | 5V | +5V power output | Internal 200mA fuse |
| 19 | J15.80/J15.104 | HPD/HEAC- | Hotplug detection / ARC-HEC | |
| 1, 4, 7, 10, 13 | - | DGND | Ground | |
| 17 | J15.102 | HEAC+ | HDMI Ethernet Audio Return Channel |
Device mapping[edit | edit source]
HDMI video is mapped to the corresponding device driver in Linux, depending on the device tree configuration. If this is the only video output, then the default value is mapped to /dev/fb0.
Device usage[edit | edit source]
The associated framebuffer device is accessed in Linux through the standard graphic access.
