Looking to check if the ADV7391 can be configured to drive the same composite signal out on its 3 output DACs. Table 37 on page 49 of the data sheet seems to indicate this is not a supported mode of operation. Can you confirm this is the case, or, can you provide details on configuring the part to operate in this manner? If this is not possible with the ADV7391, can you recommendation a part that would support this operation?
