Hi,
As per TPD12S015A datasheet, it is called HDMI Companion chip. Since it has DC-DC step up converter and 5V output, it seems to be for HDMI Transmitter use. But no where in datasheet it is mentioned as to be used only for HDMI TX.
We have used this for HDMI RX port. We have left the HPD pin floating and we have external logic for HPD. We are able to detect the HDMI source connection with this HPD logic. Even the HDMI source is able to read EDID values from our RX port.
We want to be very much sure if we are in right direction and this chip can be used for HDMI RX port. If there is anything related HDMI RX Port compliance which is not available with this TPD12S015A, then we must not use it. Can you help us know about this ?
We also have doubt on internal Pull up resistor 1.75k on SDA_B and SCL_B pins of this chip. The HDMI specifications for Receive port mentions 47k pull up.
Is it valid to use TPD12S015A for HDMI RX ?
Thx,
Mihir