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ADV7181C Close Caption Detection

Question asked by JustinWu_Ans on Nov 28, 2016
Latest reply on Mar 22, 2017 by JeyasudhaMuthuPerumal

We would like to implement Close caption function into ADV7181C.

We try to enable int_maskb from register#0x50[0] , and we can see the reg#0x4E[0] will be 1 , when I provided the signal with CC measage.


And we follow the user manual to read reg#0x78 = C7 than we try to get the VDP data from reg#0x79(VDP_CCAP_DATA_0) and reg#0x7A(VDP_CCAP_DATA_1) , but we only can read 0x80 from both registers.


Attached is our register setting for your reference.  Can you help to check the register setting and give us some suggestion?