[ TPD12S016 ] HPD Signal powered by different power supply
Can you help me to understand the HPD signal and HPD_B pin?
As my understanding, TPD12S016 has 5V_OUT pin for sourcing the HDMI power line and HPD signal is provided by sink device.
This means, there could be the possible scenario that the sink device is NOT powered by 5V_OUT (powered by their own supply).
In this case, in some cases that cannot meet the recommended conditions as below.
Is my understanding correct?
I'm not familiar with HDMI specification.
It's appreciated if this is the case or not.