ADV7623:How to output DTS/DOLBY on pin AP0_OUT

Dear My friends

Pls refer to attached file.
Audio source on my BlueRay player is DTS or DOLBY. Now I need this audio output to my SHARC decoder,

I connect my ADV7623 to SHARC only use single pin AP0_OUT.as a SPDIF signal.

An issue is my SHARC always recognize the input signal as 2-ch PCM, not DTS ot DOLBY.

I can make sure my SHARC decoder is good.

if any one can tell me how to config the register on ADV7623 to let DTS/DOLBY output on AP0_OUT pin?

or if the EDID configuration is must be do? how to define EDID content?

thks!