QI use the ADV7393 - in the datasheet Rev 0, and Datasheet Rev A there was a
chapter for I²C/SPI Interface.
In the actual datasheet revision D the SPI interface does not exist anymore.
AIt was just a datasheet change, and we will not be supporting that mode for new
There is a SPI interface on the ADV7393 encoders, however due to a lack of
customer interest, the interface is no longer supported. We have very little
information on how SPI was implemented on this silicon.
(statement Paul Slattery)
Recommendation is to use the I2C Interface only !!!