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ADV7180 2xOversampling and LLC

Question asked by tetsu.k on Aug 12, 2014
Latest reply on Aug 14, 2014 by tetsu.k



Now, I am designing video capture board using ADV7180.

I have question about 2XOversampling and LLC.


ADV7180 is 2X oversampling per channel for S-Video.

I think that 2X oversampling frequency is 28.636MHz.

ADV7180 output Digital data in 28.636MHz(Y and C).

But LLC frequency is 27.0MHz.

How do AD7180 change frequency?

Is the decimation?

I read datasheet, but I don't understand.

Could you tell me about this question?