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DS90UB948-Q1: HSync, VSync, or DE output for LVDS testing

Part Number: DS90UB948-Q1
Other Parts Discussed in Thread: DS90CF384A

We're using the '948's with different TFT displays. The source is a '941.. I'm trying to validate that the LVDS signals at the end of the chain meet the specs of each display. I've got the scope on the LVDS clock, and the D2 line that contains HS, VS, and DE. This sort of almost works, but I would really like to be able to "probe" the HS, VS and DE signals more directly. Is there any special setting, test, mode, or register that would let me see those signals? The best case scenario would be to redirect them to a GPIO where they could be probed, but maybe there's something else. This '948 must be decoding and re-encoding these anyway. I though there might be some rarely used register for just such an occasion.