Hi Dave,
Thanks very much for the reply.
Pixel Start of 1 and COD_STYLE 0x02 are both noted, and we'll change our register settings to reflect that. That was also useful info. on the syncs and frame rate, and helped us to eliminate some of our suspicions. We're sending a continuous stream of frames of data at 25Hz.
However, after posting I noted the restriction "Maximum image input size: 1.048 Msamples/image" under the custom-specific mode section of the Programming Guide. At the moment we're trying to send 576p YCbCr 4:2:2, so with blanking that's 864 * 2 * 625 or 1.08 Msamples/image. Currently we're trying to see if we can modify our vertical blanking period to reduce the number of lines in order to get under that limit, and see if that's what is stopping the device from accepting a frame. If we're over that limit, I assume SCOM 7 is what we'd expect, i.e. the device is ready for data but isn't being sent anything it can handle.
Regards,
James