Display Data Channel (DDC) - 3.2 English

HDMI 1.4/2.0 Transmitter Subsystem Product Guide (PG235)

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3.2 English

The subsystem allows the end-user to build an HDMI source device, which negotiates with the targeted HDMI sink device for supported features and capabilities. The communication between the source device(s) and the sink device is implemented through the DDC lines, which is an I2C bus included on the HDMI cable.