This implementation is pure HDMI 1.4b, enabling the extended capabilities this brings, like combined video and audio streams. Thus far, it’s been tested on Xilinx and Altera platforms ...

The IP does not support the optional FASTAUX and postcursor2 requirements of the DP1.2 standard. To facilitate lower test cost and improve test coverage, AUX channel include some testability features.

It also has 1.4a and 1.4b subtypes that only really add support for the 3D TVs that no one uses. The HDMI 2.0 standard, which increases speed to 18Gbps to enable things like 4K/60 and HDR ...

ARC was introduced as part of the HDMI 1.4b Specification, and allows for the two-way travel of audio data over an HDMI cable to and from a TV. A standard, pre-ARC HDMI port, in contrast ...