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ADV7180W - VBI Data: What happens with the register and the AVL bit if the source suddenly stops sending closed captioning? (a) is the old information still valid? (b) will the old information become invalid?

The answers to the above quetsions are given below: This relate to VBI System 2.



The CCAP data register will hold the previously received data - hence the old information is still valid. The VBI_INFO (0X90[1]) Hex will be 0.