https://docs.amd.com/r/en-US/pg351-v-hdmi-rxss1/AUX-Packets
AUX Packets - AUX Packets - 1.2 English - PG351
For HDMI, all data island packets consist of a 4-byte packet header and a 32 bytes of packet contents. In the following figure, the packet header contains 24...
auxpacketsenglish