Video A H264 ROI region6 range configure register.
| X | Configures the horizontial start macroblocks of region 6 video A. |
| Y | Configures the vertical start macroblocks of region 6 in video A. |
| X_LEN | Configures the number of macroblocks in horizontal direction of the region 6 in video A. |
| Y_LEN | Configures the number of macroblocks in vertical direction of the region 6 in video A. |
| EN | Configures whether or not to open Video A ROI of region 6 .\0:Close ROI\1:Open ROI. |