In our system, the ADV7513 can receive video data of numerous video formats, in either VESA or CEA standards. We would like to determine from a register whether the ADV7513 was able to lock to the video input. PLL Lock Status (Register 0x9E Bit 4) tells us only whether the PLL has locked to a pixel clock. Actual VIC Detected (Register 0x3E Bits 7:2) tells us only if one of the CEA861D video formats is detected. If a VESA mode is the input video format, Actual VIC Detected is 0, which cannot be differentiated from the ADV7513 not locked. Is there any comprehensive way to determine if the ADV7513 is locked to a video input raster and able to output video?