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enable simultaneous mode in ADV7842 to detect CVBS / Component /HDMI video

Question asked by Leonz on Feb 13, 2013
Latest reply on Feb 18, 2013 by Leonz



We are having an issue related to input video auto detection when ADV7842 is in ADC and HDMI simultaneous mode with IO 0x01 = 0x86,  which ADV7842 seems not  tell us what new analog video is (CVBS or component) if the resolution of input video is 480i/576i and the ADV7842 is set to enable ADC and HDMI simultaneous mode with 0x01 = 0x86 in IO map. We  hope to get updated statistics from AD7842 to find out what type of new input video is ( component video with 480i/576i or CVBS video), those registers were:  0x9C[1:0] in IO map, 0x5A[0] and 0x59[7] in SDP map, but they are not updated if ADV7842 is in that mode (IO 0x01 = 0x86). We see those registers updating correctly only when we set IO regiser 0x01=0x80.


we are not sure if we missed out some settings, any advice is trully appreciated!
Thanks a lot!
Leon Zhang