Hi ,

We are thinking of a system ADV7511 and ADV7513 ,

SOC (RGB 6 Bit )  -> ADV751x ( Convert RGB bit to HDMI) -> HDMI connector -> SOC  (Plan to throw 2LSB and output )

1. When input RGB is 6bit , by pulling the 2 LSB to GND will this be taken as 8 bit input mode .

2. Input format : Normal, are the 2 LSB od RGB as follows

       R[1:0] Data[17:16]

G[1:0] Data[9:8]

B[1:0] Data[1:0]

3.When we are not using the Audio can we just GND the Audio related pins .

Thanking you

With best regards and wishes