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ADV7181C: RANGE Range Selection (SDP)

Question asked by ynakata Employee on Dec 6, 2012
Latest reply on Dec 12, 2012 by DaveD

Regarding Range Selection (SDP), the datasheet says that default setting for Address 0x04 [0] is "1".

At the register setting, it says that the signal range should be 1 ≤ Y ≤ 254, 1 ≤ C/P ≤ 254, that is to say, it's full range.

 

A certain user wants to use the full range.

However, the user found that actual range seems to be 16 ≤ Y ≤ 235, 16 ≤ C/P ≤ 240 in spite of the setting.

If the data sheet is correct, the range should be set at "0" setting.

 

Though they changed the setting from "0" to "1" and from "1" to "0", the range wasn't changed.

And they also confirmed that the register setting was changed correctly in both cases, 1-->0 and 0-->1..

 

How can the user use full range?

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