In the 64-lead LQFP version of the ADV7180 (ADV7180BSTZ), can 8 bit YCrCb data be output on the Pixel Port Pins [7:0] ?
The answer to this question is no. 8 bit YCrCb data can only be output on the Pixel Port Pins [15:8].
See Table 100 in the Pixel Port Configuration section of the ADV7180 datasheet. ( Rev G. page 75).